smile vs CloseMouth
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
smile
This app is exclusively for users of the Smile-3 system. It provides access to your member page, allowing you to check member entry/exit status and view broadcast notifications.
- Exclusive access for Smile-3 system users
- Member page access
- Check member entry/exit status
- View broadcast notifications
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Smile-3システムをご利用頂いているお客様専用のアプリです。 マイページを使用するためのアプリです。 会員様の入退室状況や一斉通知を確認することができます。
CloseMouth
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CloseMouth A simple app to help you become aware of your open mouth habit and mouth breathing ■ Do you notice when your mouth is open? Sometimes your mouth stays open without you realizing it. This “open mouth habit” or mouth breathing can be difficult to notice on your own. CloseMouth helps you become aware of these unnoticed habits by providing a gentle alert when your mouth remains open. ■ How it works CloseMouth uses your device’s camera to detect whether your mouth is open or closed. When your mouth stays open for a certain period of time, the app plays a sound. Automatic detection Simple sound notification No complicated setup You can use it naturally in your daily life. ■ Awareness, not enforcement Habits are formed unconsciously. CloseMouth does not force behavior—it simply helps you notice your current state. These small moments of awareness can support changes in daily habits over time. ■ When to use While watching videos or using your phone During study or focused tasks While relaxing Anytime you want to be aware of your habits ■ Who it’s for People concerned about mouth breathing Those who want to be aware of daily habits Anyone looking to improve focus and posture awareness ■ Features Real-time mouth state detection Simple audio alert Easy-to-use design Designed for continuous daily use ■ Notes This app is not intended for medical use All processing is done on-device Results are not guaranteed
Screenshots
Verdict
The clearest difference is update cadence: CloseMouth at every 5 days against smile's every 4 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
smile ships an update every 4 months, CloseMouth every 5 days. The most recent releases landed on October 2, 2026 and October 28, 2026 respectively.
| Parameter | smile | CloseMouth |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| Update frequency | Every 4 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 7 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Leaphic CO.,Ltd | Ryosuke Yoshitomi |
In-app purchases
smile
No in-app purchases
CloseMouth
No in-app purchases







