Comparison

Prolog Retro Notes vs MuChat

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Prolog Retro Notes

This app offers a unique note-taking experience with a retro 8-bit aesthetic. It allows users to record memos, track editing time, and even attach photos, all within a nostalgic, game-like interface. Level up your notes and enjoy a blast from the past.

Highlights
  • Retro 8-bit graphics
  • Memo recording
  • Playtime tracking
  • Level-based text progress
  • Photo attachment
  • Passcode lock (premium)
Features
Read full description

_______________________________ Do you like retro graphics? ▼ Yes No _______________________________ For those who answered yes! Annotepad app that incorporates the nostalgic feeling of those days and reproduces the world has been born!! It's an app to remember the excitement of that day when your heart swelled with adventure into an unknown world. Today as well, let's choose a save data and head to the forest of sentences... In this memo app, you can record: - Memos - Playtime (editing time) - Level (varies depending on the amount of text) - Photos Let's level up and create great save data!! We paid special attention to the world view. We hope it can be of some use in your memo life. [Premium Service] ■ Unlocked Features - Hide in-app ads - Record photos - Unlock the record limit - Passcode lock function ■ Duration It will automatically renew every month starting from the application date. It will be charged to your iTunes account. ■ About Automatic Renewal You can stop automatic renewal if it is more than 24 hours before the end of the registration period. Automatic renewal procedures will be conducted from 24 hours before the end of the registration period. ■ Confirmation and Cancellation App Store App -> User icon at the upper right of the ToDay tab -> Subscription You can unsubscribe and set automatic renewal and check the update date here. ■ Notes - Automatic renewal of the premium plan cannot be canceled from within the app. - You will be charged to your iTunes account. - Cancellation for the current month is not accepted. ■ Terms of Use and Privacy Policy We will not provide information that can identify individuals to third parties. We manage personal information with great care and handle it as follows. - Support Correspondence No information that can identify individuals will be sent in support emails. - Details Link https://note.com/kojiro79/n/n7c8899db1c9b ■ Disclaimer We will do our best to support any problems or inconveniences in use, but the developer will not be held responsible for any damages caused by the user through this app. ----- Thank you for reading to the end! All reviews are read by the developer himself, and I always get energy from them. I also think about functions based on what you write in your review, so I would be happy if you could write a review when you have time! We will continue to update the app to make it comfortable for everyone, so please support us!

About

MuChat

Features
Read full description

MuChat(ミューチャット)は、シチュエーションに特化した国産AIキャラチャットアプリです! 魅力的なキャラクターたちとのひと時を楽しみましょう! ▼ MuChatの特徴 ■ セリフを声で聞けます 気になったセリフはその場で読み上げできます。キャラクターごとに声を選べるほか、自分の声を録音して使うこともできます。 ■ その場面のイラストを作れます 会話の流れから、いまの場面のイラストを生成できます。作った画像は端末に保存して、あとから見返せます。 ■ 遊んだ会話を、小説として読み返せます 交わした会話は小説の体裁で読み直せます。結末まで進んだ物語は本棚にたまっていきます。 ■ 自分で考えた登場人物を追加できます 用意されたキャラクターだけでなく、名前や性格を決めた人物を会話に呼び出せます。 ▼ 収録シチュエーションの例 学園 / ファンタジー / SF / 職場・バイト / 先輩・年上 / 同僚・同期 / 幼馴染 / 恋人 / 友達 / 両片想い / 初対面 / 店員・接客 / 先生 / 上司 / 青春 ▼ こんな方におすすめです ・国産の、安心のAIチャットを楽しみたい方 ・映画作品を選ぶように、AIキャラとのシチュエーションを選んで楽しみたい方 ・AIとの会話を、雑談ではなく物語として楽しみたい方 ・日本語で自然に話せるAIキャラクターを探している方 ・通勤や就寝前など、短い時間で一区切りつけたい方 ▼ 料金について ・1日10通まで無料で会話できます ・もっと続けたいときは、時間制の使い放題パス(1時間 / 1日)を購入できます ・より表現力の高いAIで返答を生成したいときは、ダイヤを使います ・読み上げと画像生成にもダイヤを使います 月額の定期購入はありません。使いたいときだけ買う形なので、解約忘れの心配がありません。

Screenshots

Prolog Retro Notes1 screens
MuChat4 screens

Verdict

The call

The clearest difference is update cadence: MuChat at fortnightly against Prolog Retro Notes's every 9 months. Prolog Retro Notes's advantage is iOS requirement (14.0 vs 16.4). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Prolog Retro Notes sells 1 in-app purchase, starting at $0.99 per month and MuChat sells 9 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Prolog Retro Notes ships an update every 9 months, MuChat fortnightly. The most recent releases landed on October 30, 2026 and November 10, 2026 respectively.

Scorecard2 real differences · 8 level
Prolog Retro Notes versus MuChat: the parameters behind the verdict, then further details
ParameterProlog Retro NotesMuChat
PriceFreeFree
Rating5.0 (4 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 9 monthsFortnightly — better
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPod — betteriPhone
Requires iOS14.0 — better16.4
Further details — not scored
Size38 MB183 MB
Age rating4+4+
Developeryasuhiro kojimaCreatopia Inc.

In-app purchases

1 purchases

Prolog Retro Notes

Subscriptions1
  • Premium plan$0.991 Month
9 purchases

MuChat

One-time9
  • 1時間使い放題$0.99
  • ダイヤ200$1.99
  • 解放チケット$1.99
Show 6 more
  • 1日使い放題$3.99
  • ダイヤ500$3.99
  • ダイヤ1000$5.99
  • ダイヤ3,000個$17.99
  • ダイヤ5,000個$29.99
  • ダイヤ12,000個$59.99

Questions

Is Prolog Retro Notes free?
Prolog Retro Notes is free to download, with in-app purchases available.
Is MuChat free?
MuChat is free to download, with in-app purchases available.
Do Prolog Retro Notes or MuChat have ads?
Both Prolog Retro Notes and MuChat show ads.
Which is updated more often, Prolog Retro Notes or MuChat?
Prolog Retro Notes ships an update every 9 months, and MuChat fortnightly. Most recently, Prolog Retro Notes was updated on October 30, 2026 and MuChat on November 10, 2026.

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