Soundless Timer vs カスタムアラーム
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Soundless Timer
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Soundless Timer is a vibration only timer app that lets you keep track of time without making any sound. Use it when: •taking a quiet nap in a break room •in meetings or business talks •on trains or buses •in libraries or study rooms •putting a child to sleep •working in a quiet office It is perfect for situations where a loud alarm would bother other people, but you still want to manage time strictly. The app was originally created as a simple tool for comfortable power naps. Main features •Vibration only timer (no sound) •Intuitive swipe or scroll control for setting time •Clean and easy to read display of remaining time •Time can be set with one second precision •Frequently used times can be quickly recalled and reset •You can extend the remaining time even after the countdown has started •Supports many different languages Recommended use cases •When you want a solid nap in the break room but cannot let an alarm sound ring •When you want to quietly know when an online meeting should end •To avoid missing your stop on a train or bus •As a Pomodoro timer for study or deep work sessions •For managing intervals in workouts or stretching •For managing nap or bedtime for your child •When you simply want to try using the app in another language Why it is soundless Most timers and alarm apps notify you with sound that everyone around can hear. Soundless Timer is designed to use vibration only, so you can keep your phone in your pocket or on your lap and be the only one who notices when time is up. Simple by design •Menus and screen transitions are kept to a minimum so you can set a time and start the timer immediately. •Ads are placed so that they do not get in the way of operating the timer. Notes •If you want the timer to run in the background, make sure notifications are enabled for the app. •Vibration strength and patterns depend on your device settings. •Depending on settings such as Silent Mode or Do Not Disturb, vibration may not occur. Please check operation in advance before using the app in important situations.
カスタムアラーム
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朝が苦手な方のための、こだわり派アラームアプリです。 【主な機能】 ・繰り返しアラーム(曜日・日付指定) ・フォルダで複数アラームを管理 ・スヌーズ間隔をカスタマイズ ・30秒リピートで二度寝防止(Pro) ・3種類のテーマで着せ替え シンプルな操作で、細かく設定できます。
Screenshots
Verdict
The clearest difference is in-app purchases: Soundless Timer at none against カスタムアラーム's 1. Soundless Timer also leads on update cadence (every 8 days vs every 4 weeks). カスタムアラーム's advantage is ads (none vs shown). On price, 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
Both are free to download. カスタムアラーム sells 1 one-off in-app purchase. Soundless Timer asks for nothing beyond the download.
Soundless Timer ships an update every 8 days, カスタムアラーム every 4 weeks. The most recent releases landed on November 9, 2026 and November 5, 2026 respectively.
| Parameter | Soundless Timer | カスタムアラーム |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 8 days — better | Every 4 weeks |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 11 MB | 39 MB |
| Age rating | 4+ | 4+ |
| Developer | GEN HIOKI | TAKUTO YOSHINO |
In-app purchases
Soundless Timer
No in-app purchases
カスタムアラーム
- Pro Plan$2.99









