Comparison

ムーンフラグ vs Simple Mood Log

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

Head to head
About

ムーンフラグ

Features
Read full description

-こんな人におすすめ- 記録をひと目でみたい コラムや情報は必要ない 自分だけの表現で記録したい アプリのデザインを自分で変更したい 毎日起動するのは面倒、まとめて記入したい 人前で使ってもバレない -機能- 生理を記録できます。 他、自分に合わせたカテゴリを自由に作成・編集できます。 (カテゴリはいくつでも作成できますが、 一覧に表示できるのは生理含めて4つまでです) 点と線(フラグ)で一覧表示できます。 その他のカテゴリはアイコンで表示されます。 カレンダーで確認することができます。 その際、メモも表示することができます。 カレンダーは5枚同時に表示でき、並べて比較することができます。 無料アプリです。下部にバナー広告が表示されます。 通知・シェア(通信)機能はありません。 当アプリは個人の健康状態の記録用アプリです。 健康を増進したり、治療計画を立てるものではありません。 またデータは端末(アプリがインストールされているiPhone,iPad) にのみ、保存されます。アプリを削除するとデータも消えますのでご注意ください。

About

Simple Mood Log

Easily track your daily mood fluctuations with this intuitive app. Record your feelings, add notes and activities, and gain insights through detailed weekly and monthly analysis graphs. It's designed for quick logging and comprehensive mood tracking.

Highlights
  • Daily mood recording
  • Memo and activity tagging
  • Add past data
  • Weekly/monthly analysis
  • Mood percentage graphs
  • Simple and easy to use
Features
Read full description

An app that allows you to record and analyze your mood on a daily basis. Feeling like your mood is fluctuating a lot lately? Why not try recording your mood changes? The registration process is incredibly simple! Just open the app, select your current mood, and press the save button. For those who want to provide more detailed records, we also offer a memo field and activity tags. Even if you forget to record your mood, you can add past data from the "History" screen, so there's no need to worry.   On the "Analysis" screen, you can check your activities for a week or a month in a ranking format, and view the percentage of different moods in a graph. ● Features ・Simple design and easy to use. ・No bothersome login. ・Detailed analysis of mood changes on the analysis screen. ●Disclaimer This App is not medical or treatment advice. It is neither professional diagnosis, opinion or service – and may not be treated as such by the user. We strongly recommend that you consult your own physician or another available health professional regarding any diagnosis, findings or interpretation. ● Privacy Policy https://apps.seeds-digital.com/privacy-policy/ ● Terms of Use https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

ムーンフラグ4 screens
Simple Mood Log4 screens

Verdict

The call

The clearest difference is in-app purchases: ムーンフラグ at none against Simple Mood Log's 2. Simple Mood Log's advantage is update cadence (every 3 days vs every 8 months). On price, ads, device support and iOS requirement 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. Simple Mood Log sells 2 in-app purchases, starting at $0.99 per month. ムーンフラグ asks for nothing beyond the download.

UpkeepUpdate frequency

ムーンフラグ ships an update every 8 months, Simple Mood Log every 3 days. The most recent releases landed on May 15, 2026 and August 10, 2026 respectively.

Scorecard2 real differences · 6 level
ムーンフラグ versus Simple Mood Log: the parameters behind the verdict, then further details
ParameterムーンフラグSimple Mood Log
PriceFreeFree
Positive reviews—100.0% of reviews
Update frequencyEvery 8 monthsEvery 3 days — better
AdsYesYes
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better13.0
Further details — not scored
Size114 MB51 MB
Age rating4+4+
DeveloperSumie WatanabeNAOYA ONO

In-app purchases

None

ムーンフラグ

No in-app purchases

2 purchases

Simple Mood Log

Subscriptions1
  • Premium Plan$0.991 Month
One-time1
  • Support Developer$0.99

Questions

Is ムーンフラグ free?
ムーンフラグ is free to download, with no in-app purchases.
Is Simple Mood Log free?
Simple Mood Log is free to download, with in-app purchases available.
Do ムーンフラグ or Simple Mood Log have ads?
Both ムーンフラグ and Simple Mood Log show ads.
Which is updated more often, ムーンフラグ or Simple Mood Log?
ムーンフラグ ships an update every 8 months, and Simple Mood Log every 3 days. Most recently, ムーンフラグ was updated on May 15, 2026 and Simple Mood Log on August 10, 2026.

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