Comparison

つみ筋 vs Muscle Stamp

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

Head to head
About

つみ筋

Features
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つみ筋 - TumiKin は、筋トレと食事の記録で キャラクターとペットが育つ、育成型フィットネスRPGです。 毎日のトレーニングと食事管理を、ゲーム感覚で楽しく習慣化できます。 【主な機能】 • キャラクター&ペット育成 筋トレを記録するとキャラクターが成長し、食事を記録するとペットが育ちます。 継続日数や内容に応じて姿が進化し、あなたの努力が目に見える形で反映されます。 RPGのような育成体験で、運動と食事管理のモチベーションが自然と続きます。 • トレーニングの記録 種目・セット数・レップ数を簡単に記録。 部位別に整理された種目から選ぶだけで、初心者でも迷わず使えます。 自分でカスタムした種目の登録にも対応しています。 • 食事の記録 食事内容を記録することで、ペットが成長。 運動だけでなく、食生活も含めた健康管理を楽しく続けられます。 • 継続日数・カロリーの可視化 トレーニングの継続日数や消費カロリーを自動で集計。 努力の積み重ねを数値と育成の両方で実感できます。 • カレンダー表示 過去のトレーニングと食事履歴をカレンダーで確認。 月ごとの振り返りや習慣チェックが簡単に行えます。 • レトロRPG風のデザイン ドット絵・ダークテーマのRPG風UIを採用。 シンプルで直感的な操作性と、遊び心のあるデザインを両立しています。 【こんな方におすすめ】 • 筋トレや食事管理を習慣化したい方 • 記録が続かないと感じている方 • ゲーム感覚で健康管理をしたい方 • キャラクターやペット育成が好きな方 • シンプルで使いやすいアプリを探している方 毎日の筋トレと食事を記録して、 キャラとペットを育てながら健康習慣を続けましょう。

About

Muscle Stamp

Effortlessly log your workouts with a single tap for each muscle group trained. Set personalized weekly goals, track your training streaks, and visualize your progress over time. Focus on your fitness without the hassle of complex tracking.

Highlights
  • One-tap muscle group logging
  • Personalized weekly training goals
  • Workout streak tracking
  • Progress visualization
  • Built-in session timer
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MuscleStamp is the dead-simple way to track your training. No weights to log, no sets to count, no rest timers to fuss over. Just tap a stamp for the muscle group you trained today—and you're done. WHY MUSCLESTAMP - One tap to log. Six color-coded stamps for chest, back, shoulders, arms, legs, and abs. That's the whole interface. - Set goals at your own pace. Decide how many times a week you want to train each muscle group. No pressure, no rigid programs—just targets that fit your life. - Watch your streak grow. Every workout fills in your calendar. Seeing the days stack up is the motivation that keeps you coming back. - See all your progress. Total days trained, goal weeks hit, your best streak, and reps per muscle group—all your hard work, in one place. - A built-in timer. Time your sessions right inside the app, no need to switch to another timer. - Body-specific training programs (Pro). Dedicated menus for chest, arms, and abs. Just pick your training days, and today's menu shows up automatically—difficulty scales itself across 8 levels as you keep going. Whether you're new to the gym or already grinding, MuscleStamp keeps tracking out of your way so you can focus on the work. No accounts. No clutter. Just tap and go. ABOUT THE PRO PLAN The Pro plan is a monthly auto-renewing subscription. While subscribed, you get access to all published body-specific training programs (including any added in the future). After a 14-day free trial, it automatically converts to a paid subscription priced at $3.99/month (displayed price may vary by region—check the in-app purchase screen for details). Unless cancelled at least 24 hours before the end of the free trial or the current billing period, the subscription renews automatically and you will be charged. You can cancel anytime from your App Store account settings. Individual training programs are also available as one-time purchases. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Stamp it. That's all.

Screenshots

つみ筋4 screens
Muscle Stamp4 screens

Verdict

The call

The clearest difference is ads: Muscle Stamp at none against つみ筋's shown. つみ筋's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price, update cadence and in-app purchases 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

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on October 6, 2026 and October 14, 2026 respectively.

Scorecard3 real differences · 7 level
つみ筋 versus Muscle Stamp: the parameters behind the verdict, then further details
Parameterつみ筋Muscle Stamp
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 4 daysEvery 4 days
AdsYesNo — better
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.1 — better17.0
Further details — not scored
Size79 MB42 MB
Age rating4+4+
DeveloperYuta YoshinagaKazuki Ohya

In-app purchases

None

つみ筋

No in-app purchases

None

Muscle Stamp

No in-app purchases

Questions

Is つみ筋 free?
つみ筋 is free to download, with no in-app purchases.
Is Muscle Stamp free?
Muscle Stamp is free to download, with no in-app purchases.
Do つみ筋 or Muscle Stamp have ads?
つみ筋 shows ads; Muscle Stamp does not.
Which is updated more often, つみ筋 or Muscle Stamp?
つみ筋 ships an update every 4 days, and Muscle Stamp every 4 days. Most recently, つみ筋 was updated on October 6, 2026 and Muscle Stamp on October 14, 2026.

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