Sanitas vs Let's
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sanitas
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健康・ダイエットに対する意識や努力のポイントを、友達と共有してゲーム感覚で楽しく健康維持・ダイエットの継続をサポートします。運動や歩数・毎日の自己評価によるポイントを集めて友達と競いましょう。努力の可視化や使いやすく美しいUIデザインによって毎日のダイエットや健康維持のモチベーションを保ちます。また、HealthKitを使用して歩数や体重の管理をします。
Let's
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Are you tired of dieting alone and enduring it all by yourself? We’ve just released "Let's," a fun and easy-to-use diet app that you can enjoy with your close friends! The features are incredibly simple! We've focused on making the user experience easy for everyone! Recommended Features of Let's: [Dieting Together with Your Close Friends] We all know how tough it can be to keep up with dieting... Invite your friends and create a group. With a game-like experience, what was once a tough diet can turn into a fun one! [Extremely Simple! Easy Weight Tracking] Are you struggling to make use of all the features in other diet apps? Let's is all about a simple and minimalistic design and functionality. Try downloading it once, and you’ll see why anyone can use it with ease! [Fun Communication through Chats and Likes] To make the group dieting concept more enjoyable, we’ve added chat and like features! You can cheer each other on, making the dieting experience not only productive but also memorable with your friends. [Share Your Progress and Results on Instagram] You’ll want to share your hard-earned results and the satisfaction of completing your diet with everyone. Let’s seamlessly integrates with Instagram Stories, so you can easily share your dieting achievements!
Screenshots
Verdict
The clearest difference is update cadence: Sanitas at every 2 weeks against Let's's every 3 weeks. 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Sanitas ships an update every 2 weeks, Let's every 3 weeks. The most recent releases landed on October 4, 2026 and October 16, 2026 respectively.
| Parameter | Sanitas | Let's |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.4 — better | 16.0 |
| Further details — not scored | ||
| Size | 20 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Tomofumi masuda | jinsei shima |
In-app purchases
Sanitas
No in-app purchases
Let's
No in-app purchases









