Megami Tensei Wiki
(Apps list in SMT4. Actual use isn't recorded, but some in-game descriptions cover it. Apps have Japanese b/c this editor isn't far in SMT4 to obtain & check that App & some Acquisitions of Apps are unknown. 1st time using a wiki, please forgive me.)
 
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'''Apps''' are a gameplay mechanic in ''[[Shin Megami Tensei IV]]'' and are installed in a [[COMP|Gauntlet]] using App Points.
==List of Shin Megami Tensei IV Burroughs Apps==
 
  +
Apps are part of the gameplay in ''Shin Megami Tensei IV''.
 
 
==Apps==
 
==Apps==
The sprite Burroughs in a Gauntlet will provide Apps to assist a Samurai. Apps can be obtained by purchasing them with App Points, which Flynn gets 10 of every level. <span style="line-height:20px;">Flynn can not obtain all of the Apps with the App Points received from leveling alone, so he must find different means.</span>
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The sprite [[Burroughs]] in a Gauntlet will provide Apps to assist a Samurai. Apps can be obtained by purchasing them with App Points, which Flynn gets 10 of every level. However, <span style="line-height:20px;">Flynn can not obtain all of the Apps with the App Points received from leveling alone, so he must find different means.</span>
   
*<span style="line-height:20px;">10 Point App Cards or 20 Point App Cards can be found either in the main game or in DLC.</span>
+
*10-Point Cards and 20-Point Cards can be found either in the main game or in DLC, and can be used to obtain App Points.
   
*40 App Points can be obtained by StreetPassing someone with either ''Etrian Odyssey IV: Legends of the Titans'' data or ''Shin Megami Tensei: Soul Hackers'' data just once for each game, which are other titles created by Atlus.
+
*40 App Points can be obtained by StreetPassing someone with ''Etrian Odyssey IV: Legends of the Titans'' data just once.
  +
*40 App Points can be obtained by StreetPassing someone with ''Shin Megami Tensei: Devil Summoner: Soul Hackers'' data just once.
==Table of Apps==
 
   
 
==Table of Apps==
<center><div>
 
  +
{|class="table smt4"
{|class="wikitable" border="1" cellpadding="4" cellspacing="4"
 
|Name
+
!Name
|In-Game Description
+
!In-Game Description
|Point Cost
+
!Point Cost
|Acquisition
+
!Acquisition
 
|-
 
|-
 
|Skill Expansion 1
 
|Skill Expansion 1
 
|Adds 1 skill slot for your skills.
 
|Adds 1 skill slot for your skills.
 
|20
 
|20
 
|
|2以降は前段階を取得すると解禁
 
  +
Reach Level 5.
(Lvによる制限はなさそう?)
 
 
|-
 
|-
 
|Skill Expansion 2
 
|Skill Expansion 2
Line 37: Line 37:
 
|Purchase Skill Expansion 3.
 
|Purchase Skill Expansion 3.
 
|-
 
|-
  +
|Auto-Pinpoint
|弱点オートプラグイン (Auto-Battle + Weaknesses?)
 
  +
|Allows for automatic targeting of enemy weaknesses in Auto-Battle.
|戦闘中にLボタンで「弱点オート」が実行可能になる (L button Auto-Battle that strikes enemy weaknesses?)
 
 
|30
 
|30
  +
|Begin the "Capture the Black Samurai" main quest.
|メインクエスト「生存者を発見せよ」クリア
 
 
|-
 
|-
 
|Demon Analyze
 
|Demon Analyze
Line 50: Line 50:
 
|Regenerates your HP while walking.
 
|Regenerates your HP while walking.
 
|35
 
|35
  +
|Clear the "Training Exercise II" main quest and reach Level 10.
|「実地訓練 其の弐」クリア後
 
2以降は前段階を取得し、Lvを満たすと解禁
 
 
|-
 
|-
 
|HP Recovery 2
 
|HP Recovery 2
 
|Regenerates your HP while walking.
 
|Regenerates your HP while walking.
 
|35
 
|35
|Purchase HP Recovery 1.
+
|Purchase HP Recovery 1 and reach Level 20.
 
|-
 
|-
 
|Party HP Recovery
 
|Party HP Recovery
 
|Regenerates HP for the party while walking.
 
|Regenerates HP for the party while walking.
 
|65
 
|65
|Purchase HP Recovery 2.
+
|Purchase HP Recovery 2 and reach Level 30.
 
|-
 
|-
 
|MP Recovery 1
 
|MP Recovery 1
 
|Regenerates your MP while walking.
 
|Regenerates your MP while walking.
 
|40
 
|40
 
|
|「実地訓練 其の弐」クリア後
 
  +
Clear the "Training Exercise II" main quest and reach Level 10.
2以降は前段階を取得し、Lvを満たすと解禁
 
 
|-
 
|-
 
|MP Recovery 2
 
|MP Recovery 2
 
|Regenerates your MP while walking.
 
|Regenerates your MP while walking.
 
|40
 
|40
|Purchase MP Recovery 1.
+
|Purchase MP Recovery 1 and reach Level 20.
 
|-
 
|-
 
|Party MP Recovery
 
|Party MP Recovery
 
|Regenerates MP for the party while walking.
 
|Regenerates MP for the party while walking.
 
|70
 
|70
|Purchase MP Recovery 2.
+
|Purchase MP Recovery 2 and reach Level 30.
 
|-
 
|-
 
|Mapper
 
|Mapper
 
|Installs a Mapper function to aid in your exploration.
 
|Installs a Mapper function to aid in your exploration.
 
|1
 
|1
  +
|Forced acquisition after clearing the "Training Exercise II" main quest.
|メインクエスト「実地訓練 其の弐」後に強制取得
 
 
|-
 
|-
 
|Expand Stock 1
 
|Expand Stock 1
 
|Adds 1 slot to your demon stock.
 
|Adds 1 slot to your demon stock.
 
|5
 
|5
 
|
|2以降は前段階を取得すると解禁
 
  +
Reach Level 5.
(Lvによる制限はなさそう?)
 
 
|-
 
|-
 
|Expand Stock 2
 
|Expand Stock 2
Line 188: Line 187:
 
|Adds 1 skill slot for your demons.
 
|Adds 1 skill slot for your demons.
 
|20
 
|20
 
|
|2以降は前段階を取得すると解禁
 
  +
Reach Level 5.
(Lvによる制限はなさそう?)
 
 
|-
 
|-
 
|Demon Skill+ 2
 
|Demon Skill+ 2
Line 231: Line 230:
 
|Purchase Demon Skill+ 1.
 
|Purchase Demon Skill+ 1.
 
|-
 
|-
  +
|Skill Augment
|スキルハイコンバータ (Better Mutated Skills?)
 
  +
|Makes skills mutate.
|変異するスキルをより良いものにします
 
 
|60
 
|60
|Reach Shinjuku.
+
|Meet Hikaru in Shinjuku.
 
|-
 
|-
  +
|Gift Augment
|ギフトハイコンバータ (Better Gifts?)
 
  +
|Improves the quality of gifts you receive from your demons.
|ギフトの中身をより良いものにします
 
 
|45
 
|45
|Reach Shinjuku.
+
|Meet Hikaru in Shinjuku.
 
|-
 
|-
 
|Scout
 
|Scout
 
|Adds a talk skill to recruit demons during battle.
 
|Adds a talk skill to recruit demons during battle.
 
|1
 
|1
  +
|Forced acquisition after clear the "Training Exercise I" main quest.
|メインクエスト「実地訓練 其の壱」後に強制取得
 
 
|-
 
|-
 
|Scout Gift
 
|Scout Gift
 
|Demons befriended through the Scout skill will give you an item.
 
|Demons befriended through the Scout skill will give you an item.
 
|15
 
|15
|Initially available, purchase Scout.
+
|Initially available after obtaining Scout.
 
|-
 
|-
 
|Scout Bonus
 
|Scout Bonus
Line 286: Line 285:
 
|Purchase Trade.
 
|Purchase Trade.
 
|-
 
|-
  +
|
|└ トレード最適化 (Expert Trader?)
 
  +
Expert Trader
|「トレード」交渉時に悪魔からの要求を大幅に値切る ("Greatly decreases the demon's demands when using the Trade skill."?)
 
  +
|
 
Greatly decreases the demon's demands when using the Trade skill.
 
|30
 
|30
 
|Purchase Trade+.
 
|Purchase Trade+.
Line 296: Line 297:
 
|Initially available.
 
|Initially available.
 
|-
 
|-
|ネゴ+ (Negotiate+?)
+
|Negotiate+
  +
|Heals the party when using the Negotiation skill.
|「ネゴシエーション」成功時にパーティを回復
 
 
|20
 
|20
 
|Purchase Negotiate.
 
|Purchase Negotiate.
 
|-
 
|-
|ネゴ最適化 (Expert Negotiator?)
+
|Expert Negotiator
  +
|Greatly decreases the demon's demands when using the Negotiation skill.
|「ネゴシエーション」交渉時に悪魔からの要求を大幅に値切る
 
 
|30
 
|30
|Purchase ネゴ+ (Negotiate+?).
+
|Purchase Negotiate+.
 
|-
 
|-
  +
|Chitchat
|ムダ話 (Idle Talk?)
 
  +
|Adds a talk skill to decrease the Press Turns a demon gets in battle.
|悪魔の行動回数を減らす会話スキル「ムダ話」を追加 (Reduces enemy turns?)
 
 
|30
 
|30
 
|Purchase Negotiate.
 
|Purchase Negotiate.
 
|-
 
|-
  +
|Chitchat+
|ムダ話+ (Idle Talk+?)
 
  +
|Demons lose 2 Press Turns when using the Chitchat skill.
|「ムダ話」で悪魔の行動回数を2回減らす (2 enemy turns?)
 
 
|40
 
|40
|Purchase ムダ話 (Idle Talk?).
+
|Purchase Chitchat.
 
|-
 
|-
  +
|Expert Chitchatter
|ムダ話最適化 (Expert Idle Talker)
 
  +
|Greatly decreases the demon's demands when using the Chitchat skill.
|「ムダ話」交渉時に悪魔からの要求を大幅に値切る
 
 
|40
 
|40
|Purchase ムダ話+ (Idle Talk+?).
+
|Purchase Chitchat+.
 
|-
 
|-
  +
|Plead
|チャリティ (Charity?)
 
  +
|Adds a talk skill to beg a demon to heal your party during battle.
|悪魔に回復してもらう会話スキル「チャリティ」を追加 (Get healed by the enemy?)
 
 
|30
 
|30
 
|Purchase Negotiate.
 
|Purchase Negotiate.
 
|-
 
|-
  +
|Plead+
|チャリティ+ (Charity+?)
 
  +
|Receive a second round of healing when using the Plead skill.
|「チャリティ」でもう一度回復してもらう (Dual healing?)
 
 
|40
 
|40
|Purchase チャリティ (Charity?).
+
|Purchase Plead.
 
|-
 
|-
  +
|Expert Pleader
|チャリティ最適化 (Expert Charity...er?)
 
  +
|Greatly decreases the demon's demands when using the Plead skill.
|「チャリティ」交渉時に悪魔からの要求を大幅に値切る
 
 
|40
 
|40
|Purchase チャリティ+ (Charity+?).
+
|Purchase Plead+.
 
|-
 
|-
 
|Fundraise
 
|Fundraise
Line 354: Line 355:
 
|Increases EXP gained through demon conversation by 1.2x.
 
|Increases EXP gained through demon conversation by 1.2x.
 
|10
 
|10
  +
|Begin the "To My Fellow Samurai" main quest and reach Level 10.
|
 
 
|-
 
|-
 
|Talk EXP Boost 2
 
|Talk EXP Boost 2
Line 374: Line 375:
 
|Adds an ability in battle to understand demons that one normally can't talk to.
 
|Adds an ability in battle to understand demons that one normally can't talk to.
 
|20
 
|20
|Scout or use a talk skill on an incomprehensible demon, such as Foul Slime or Flight Tangata Manu in Naraku.
+
|Use a talk skill, like Scout, on an incomprehensible demon, such as Foul Slime or Flight Tangata Manu.
 
|-
 
|-
 
|Demon Fusion
 
|Demon Fusion
 
|Installs the "Cathedral of Shadows" App that allows you to fuse demons.
 
|Installs the "Cathedral of Shadows" App that allows you to fuse demons.
 
|2
 
|2
  +
|Forced acquisition when entering Naraku during the "To My Fellow Samurai" main quest.
|メインクエスト「我が心の同胞に捧ぐ」中に強制取得
 
 
|-
 
|-
|悪魔合体ライト (Demon Fusion in Combat?)
+
|Demon Fusion Lite
  +
|Allows for simple, 2-demon fusion during battle.
|戦闘メニューに「悪魔合体」を追加(仲魔2体を選ぶ簡易形式)
 
 
|20
 
|20
  +
|Begin the "Capture the Black Samurai" main quest.
|
 
 
|-
 
|-
 
|Fusion Booster 1
 
|Fusion Booster 1
 
|Increases the level ceiling for fusions by 1.
 
|Increases the level ceiling for fusions by 1.
 
|40
 
|40
  +
|Begin the "To My Fellow Samurai" main quest and reach Level 5.
|
 
 
|-
 
|-
 
|Fusion Booster 2
 
|Fusion Booster 2
Line 421: Line 422:
 
|Purchase Fusion Booster 6.
 
|Purchase Fusion Booster 6.
 
|-
 
|-
|悪魔クロックアップ F (Fusion Booster Final?)
+
|Fusion Booster X
  +
|Removes the level ceiling for fusions.
|合体可能レベルに制限がなくなる (No fusion level ceiling.)
 
 
|200
 
|200
  +
|
|Purchase Fusion Booster 7. 2周目以降限定
 
  +
Clear the game, begin a New Game Plus, and purchase Fusion Booster 7. 
 
|-
 
|-
 
|Fusion EXP Boost 1
 
|Fusion EXP Boost 1
 
|Increases the EXP gained through demon fusion by 1.2x.
 
|Increases the EXP gained through demon fusion by 1.2x.
 
|10
 
|10
  +
|Begin the "To My Fellow Samurai" main quest and reach Level 10.
|
 
 
|-
 
|-
 
|Fusion EXP Boost 2
 
|Fusion EXP Boost 2
Line 446: Line 448:
 
|Purchase Fusion EXP Boost 3.
 
|Purchase Fusion EXP Boost 3.
 
|-
 
|-
  +
|Summon Discount 1
|全書レートダウン 1 (Demon Compendium Macca Rate Down?)
 
  +
|Lowers Macca cost to summon demons from the Demon Compendium by 5%.
|悪魔全書から悪魔を召喚する際の消費マッカ-5% (Macca - 5%?)
 
 
|10
 
|10
  +
|Begin the "Capture the Black Samurai" main quest.
|「黒きサムライを捕縛する」受注後
 
 
|-
 
|-
  +
|Summon Discount 2
|全書レートダウン 2
 
  +
|Lowers Macca cost to summon demons from the Demon Compendium by 10%.
|悪魔全書から悪魔を召喚する際の消費マッカ-10% (Macca - 10%?)
 
 
|15
 
|15
|Purchase 全書レートダウン 1.
+
|Purchase Summon Discount 1.
 
|-
 
|-
  +
|Summon Discount 3
|全書レートダウン 3
 
  +
|Lowers Macca cost to summon demons from the Demon Compendium by 20%.
|悪魔全書から悪魔を召喚する際の消費マッカ-20% (Macca - 20%?)
 
 
|15
 
|15
|Purchase 全書レートダウン 2.
+
|Purchase Summon Discount 2.
 
|-
 
|-
  +
|Summon Discount 4
|全書レートダウン 4
 
  +
|Lowers Macca cost to summon demons from the Demon Compendium by 50%.
|悪魔全書から悪魔を召喚する際の消費マッカ-50% (Macca - 50%?)
 
 
|40
 
|40
|Purchase 全書レートダウン 3.
+
|Purchase Summon Discount 3.
 
|}
 
|}
  +
</div></center>
 
 
==Source==
 
==Source==
 
[http://www34.atwiki.jp/megaten4/pages/43.html List of Shin Megami Tensei IV Burroughs Apps (Japanese Wiki) List]
 
[http://www34.atwiki.jp/megaten4/pages/43.html List of Shin Megami Tensei IV Burroughs Apps (Japanese Wiki) List]
  +
  +
{{SMT4}}
 
[[Category:Shin Megami Tensei IV]]

Revision as of 03:49, 1 August 2013

Apps are a gameplay mechanic in Shin Megami Tensei IV and are installed in a Gauntlet using App Points.

Apps

The sprite Burroughs in a Gauntlet will provide Apps to assist a Samurai. Apps can be obtained by purchasing them with App Points, which Flynn gets 10 of every level. However, Flynn can not obtain all of the Apps with the App Points received from leveling alone, so he must find different means.

  • 10-Point Cards and 20-Point Cards can be found either in the main game or in DLC, and can be used to obtain App Points.
  • 40 App Points can be obtained by StreetPassing someone with Etrian Odyssey IV: Legends of the Titans data just once.
  • 40 App Points can be obtained by StreetPassing someone with Shin Megami Tensei: Devil Summoner: Soul Hackers data just once.

Table of Apps

Name In-Game Description Point Cost Acquisition
Skill Expansion 1 Adds 1 skill slot for your skills. 20

Reach Level 5.

Skill Expansion 2 Adds 1 skill slot for your skills. 30 Purchase Skill Expansion 1.
Skill Expansion 3 Adds 1 skill slot for your skills. 30 Purchase Skill Expansion 2.
Skill Expansion 4 Adds 1 skill slot for your skills. 40 Purchase Skill Expansion 3.
Auto-Pinpoint Allows for automatic targeting of enemy weaknesses in Auto-Battle. 30 Begin the "Capture the Black Samurai" main quest.
Demon Analyze Installs a function that allows you to view enemy demon's abilities. 20 Initially available.
HP Recovery 1 Regenerates your HP while walking. 35 Clear the "Training Exercise II" main quest and reach Level 10.
HP Recovery 2 Regenerates your HP while walking. 35 Purchase HP Recovery 1 and reach Level 20.
Party HP Recovery Regenerates HP for the party while walking. 65 Purchase HP Recovery 2 and reach Level 30.
MP Recovery 1 Regenerates your MP while walking. 40

Clear the "Training Exercise II" main quest and reach Level 10.

MP Recovery 2 Regenerates your MP while walking. 40 Purchase MP Recovery 1 and reach Level 20.
Party MP Recovery Regenerates MP for the party while walking. 70 Purchase MP Recovery 2 and reach Level 30.
Mapper Installs a Mapper function to aid in your exploration. 1 Forced acquisition after clearing the "Training Exercise II" main quest.
Expand Stock 1 Adds 1 slot to your demon stock. 5

Reach Level 5.

Expand Stock 2 Adds 1 slot to your demon stock. 5 Purchase Expand Stock 1.
Expand Stock 3 Adds 1 slot to your demon stock. 5 Purchase Expand Stock 2.
Expand Stock 4 Adds 1 slot to your demon stock. 5 Purchase Expand Stock 3.
Expand Stock 5 Adds 1 slot to your demon stock. 6 Purchase Expand Stock 4.
Expand Stock 6 Adds 1 slot to your demon stock. 6 Purchase Expand Stock 5.
Expand Stock 7 Adds 1 slot to your demon stock. 6 Purchase Expand Stock 6.
Expand Stock 8 Adds 1 slot to your demon stock. 6 Purchase Expand Stock 7.
Expand Stock 9 Adds 1 slot to your demon stock. 7 Purchase Expand Stock 8.
Expand Stock 10 Adds 1 slot to your demon stock. 7 Purchase Expand Stock 9.
Expand Stock 11 Adds 1 slot to your demon stock. 7 Purchase Expand Stock 10.
Expand Stock 12 Adds 1 slot to your demon stock. 7 Purchase Expand Stock 11.
Expand Stock 13 Adds 1 slot to your demon stock. 8 Purchase Expand Stock 12.
Expand Stock 14 Adds 1 slot to your demon stock. 8 Purchase Expand Stock 13.
Expand Stock 15 Adds 1 slot to your demon stock. 8 Purchase Expand Stock 14.
Expand Stock 16 Adds 1 slot to your demon stock. 8 Purchase Expand Stock 15.
Skill Smoother 1 Decreases the MP Cost of demons' skills by 1. 20 Initially available.
Skill Smoother 2 Decreases the MP Cost of demons' skills by 1. 20 Purchase Skill Smoother 1.
Skill Smoother 3 Decreases the MP Cost of demons' skills by 1. 35 Purchase Skill Smoother 2.
Skill Smoother 4 Decreases the MP Cost of demons' skills by 1. 35 Purchase Skill Smoother 3.
Demon Skill+ 1 Adds 1 skill slot for your demons. 20

Reach Level 5.

Demon Skill+ 2 Adds 1 skill slot for your demons. 30 Purchase Demon Skill+ 1.
Demon Skill+ 3 Adds 1 skill slot for your demons. 30 Purchase Demon Skill+ 2.
Demon Skill+ 4 Adds 1 skill slot for your demons. 40 Purchase Demon Skill+ 3.
Demon Enhancer: St Demons gain 1 more St than usual when leveling up. 25 Purchase Demon Skill+ 1.
Demon Enhancer: Dx Demons gain 1 more Dx than usual when leveling up. 25 Purchase Demon Skill+ 1.
Demon Enhancer: Ma Demons gain 1 more Ma than usual when leveling up. 25 Purchase Demon Skill+ 1.
Demon Enhancer: Ag Demons gain 1 more Ag than usual when leveling up. 25 Purchase Demon Skill+ 1.
Demon Enhancer: Lu Demons gain 1 more Lu than usual when leveling up. 25 Purchase Demon Skill+ 1.
Skill Augment Makes skills mutate. 60 Meet Hikaru in Shinjuku.
Gift Augment Improves the quality of gifts you receive from your demons. 45 Meet Hikaru in Shinjuku.
Scout Adds a talk skill to recruit demons during battle. 1 Forced acquisition after clear the "Training Exercise I" main quest.
Scout Gift Demons befriended through the Scout skill will give you an item. 15 Initially available after obtaining Scout.
Scout Bonus Demons befriended through the Scout skill will give you Macca. 15 Purchase Scout Gift.
Scout+ Demons befriended through the Scout skill will recruit other demons. 15 Purchase Scout Bonus.
Expert Scout Greatly decreases the demon's demands when using the Scout skill. 30 Purchase Scout+.
Stats Plugin Demons befriended through the Scout skill will have increased stats. 30 Purchase Expert Scout.
Skills Plugin Demons befriended through the Scout skill will learn new skills. 30 Purchase Stats Plugin.
Trade Adds a talk skill to negotiate with a demon for items during battle. 10 Purchase Scout Gift.
Trade+ Receive additional items when using the Trade skill. 20 Purchase Trade.

Expert Trader

Greatly decreases the demon's demands when using the Trade skill.

30 Purchase Trade+.
Negotiate Adds a talk skill to negotiate a cease-fire with demons. 20 Initially available.
Negotiate+ Heals the party when using the Negotiation skill. 20 Purchase Negotiate.
Expert Negotiator Greatly decreases the demon's demands when using the Negotiation skill. 30 Purchase Negotiate+.
Chitchat Adds a talk skill to decrease the Press Turns a demon gets in battle. 30 Purchase Negotiate.
Chitchat+ Demons lose 2 Press Turns when using the Chitchat skill. 40 Purchase Chitchat.
Expert Chitchatter Greatly decreases the demon's demands when using the Chitchat skill. 40 Purchase Chitchat+.
Plead Adds a talk skill to beg a demon to heal your party during battle. 30 Purchase Negotiate.
Plead+ Receive a second round of healing when using the Plead skill. 40 Purchase Plead.
Expert Pleader Greatly decreases the demon's demands when using the Plead skill. 40 Purchase Plead+.
Fundraise Adds a talk skill to a demon for Macca during battle. 15 Initially available.
Fundraise+ Receive additional Macca when using the Fundraise skill. 20 Purchase Fundraise.
Expert Fundraiser Gradually increases the Macca gained when using the Fundraise skill. 40 Purchase Fundraise+.
Talk EXP Boost 1 Increases EXP gained through demon conversation by 1.2x. 10 Begin the "To My Fellow Samurai" main quest and reach Level 10.
Talk EXP Boost 2 Increases EXP gained through demon conversation by 1.4x. 15 Purchase Talk EXP Boost 1.
Talk EXP Boost 3 Increases EXP gained through demon conversation by 1.6x. 20 Purchase Talk EXP Boost 2.
Talk EXP Boost 4 Increases EXP gained through demon conversation by 1.8x. 40 Purchase Talk EXP Boost 3.
Demolingual Adds an ability in battle to understand demons that one normally can't talk to. 20 Use a talk skill, like Scout, on an incomprehensible demon, such as Foul Slime or Flight Tangata Manu.
Demon Fusion Installs the "Cathedral of Shadows" App that allows you to fuse demons. 2 Forced acquisition when entering Naraku during the "To My Fellow Samurai" main quest.
Demon Fusion Lite Allows for simple, 2-demon fusion during battle. 20 Begin the "Capture the Black Samurai" main quest.
Fusion Booster 1 Increases the level ceiling for fusions by 1. 40 Begin the "To My Fellow Samurai" main quest and reach Level 5.
Fusion Booster 2 Increases the level ceiling for fusions by 2. 40 Purchase Fusion Booster 1.
Fusion Booster 3 Increases the level ceiling for fusions by 4. 50 Purchase Fusion Booster 2.
Fusion Booster 4 Increases the level ceiling for fusions by 6. 50 Purchase Fusion Booster 3.
Fusion Booster 5 Increases the level ceiling for fusions by 9. 70 Purchase Fusion Booster 4.
Fusion Booster 6 Increases the level ceiling for fusions by 12. 70 Purchase Fusion Booster 5.
Fusion Booster 7 Increases the level ceiling for fusions by 15. 70 Purchase Fusion Booster 6.
Fusion Booster X Removes the level ceiling for fusions. 200

Clear the game, begin a New Game Plus, and purchase Fusion Booster 7. 

Fusion EXP Boost 1 Increases the EXP gained through demon fusion by 1.2x. 10 Begin the "To My Fellow Samurai" main quest and reach Level 10.
Fusion EXP Boost 2 Increases the EXP gained through demon fusion by 1.5x. 15 Purchase Fusion EXP Boost 1.
Fusion EXP Boost 3 Increases the EXP gained through demon fusion by 2x. 20 Purchase Fusion EXP Boost 2.
Fusion EXP Boost 4 Increases the EXP gained through demon fusion by 3x. 20 Purchase Fusion EXP Boost 3.
Summon Discount 1 Lowers Macca cost to summon demons from the Demon Compendium by 5%. 10 Begin the "Capture the Black Samurai" main quest.
Summon Discount 2 Lowers Macca cost to summon demons from the Demon Compendium by 10%. 15 Purchase Summon Discount 1.
Summon Discount 3 Lowers Macca cost to summon demons from the Demon Compendium by 20%. 15 Purchase Summon Discount 2.
Summon Discount 4 Lowers Macca cost to summon demons from the Demon Compendium by 50%. 40 Purchase Summon Discount 3.

Source

List of Shin Megami Tensei IV Burroughs Apps (Japanese Wiki) List

Characters
Main Flynn - Isabeau - Jonathan - Walter - Burroughs
Supporting Hope - Issachar - Gabby - Navarre - Hugo - K - Tayama - Kaga - Hikaru - Fujiwara - Skins - Mastema - Stephen - Black Samurai - The White - Kiyoharu - Akira - Kenji - Aquila - Ahazuya Mikado - Charon - Mido - Lucifer - Merkabah - Masakado
Minor Terminal Guardian - Nozomi - Minako
Adaptations Gina - Stan - Al-mi'raj - Asuma - Nicola - Ys
Setting
Locations Eastern Kingdom of Mikado - Mikado Castle - Naraku - Kiccigiorgi - Tokyo - Ueno - Chiyoda - Shinjuku - Ikebukuro - Kagome Tower - Shibuya - Roppongi - Ginza - Tsukiji Hongwanji - Midtown - Reverse Hills - Camp Ichigaya - Blasted Tokyo - Pluto Castle - Infernal Tokyo - Monochrome Forest - Tokyo Bay - Minami Sunamachi - Purgatorium - Lucifer Palace - River Styx
Organizations Samurai - Hunter Association - Ashura-kai - Ring of Gaea - National Defense Divinities - Counter Demon Force
Archives
Terminology COMP - Gauntlet Rite - Press Turn Battle - Smirk - Domain - Horde - Terminal - Cathedral of Shadows - Red Pill - Hunter - Yamato Perpetual Reactor - Whisper event - Demonoid - Neurisher - Cocoon - Streetpass
Lists Demons (Evolutions - Special Fusions) - Bosses - Skills - Items - Apps - Quests - Translations
Other Media
Games Shin Megami Tensei IV Apocalypse
Production Original Soundtrack
Publication DEMONIC GENE - -Prayers- - Artbook
Events Shin Megami Tensei Online Live 2021: Reason of Music