Comparison

NotTODO vs Yappy!

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

Head to head
About

NotTODO

Features
Read full description

やらないことを管理するアプリ 悪習慣を断ち切るための新しい習慣を始めましょう。 このアプリでは、やらないことをリストにして通知でリマインドし、画面で常に確認、共有機能で仲間とモチベーションを高めることができます。 シンプルで効果的な自己管理ツールをぜひお試しください。

About

Yappy!

Features
Read full description

Yappy! は、「話す」だけで感情を色で見える化する振り返りアプリです。 ・表示される質問に「話して」回答するだけ! ・要約も感情分析も改善も、すべてAIにおまかせ ・AIが声から分析した感情を、独自アルゴリズムで色に表現 ・ウィジェットや通知機能で、三日坊主を防止 『Yappy!』で、ワクワクする明日に向けて、今日の振り返りを行いませんか? ダウンロード&高評価お願いします!

Screenshots

NotTODO2 screens
Yappy!4 screens

Verdict

The call

The clearest difference is update cadence: Yappy! at monthly against NotTODO's every 2 months. 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

NotTODO ships an update every 2 months, Yappy! monthly. The most recent releases landed on August 13, 2026 and September 9, 2026 respectively.

Scorecard1 real difference · 5 level
NotTODO versus Yappy!: the parameters behind the verdict, then further details
ParameterNotTODOYappy!
PriceFreeFree
Update frequencyEvery 2 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.517.5
Further details — not scored
Size15 MB17 MB
Age rating4+4+
DeveloperYoshito UsuiTOSHIHIKO MORI

In-app purchases

None

NotTODO

No in-app purchases

None

Yappy!

No in-app purchases

Questions

Is NotTODO free?
NotTODO is free to download, with no in-app purchases.
Is Yappy! free?
Yappy! is free to download, with no in-app purchases.
Do NotTODO or Yappy! have ads?
Neither NotTODO nor Yappy! shows ads.
Which is updated more often, NotTODO or Yappy!?
NotTODO ships an update every 2 months, and Yappy! monthly. Most recently, NotTODO was updated on August 13, 2026 and Yappy! on September 9, 2026.

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