Comparison

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.

Head to head
About

Soundless Timer

Features
Read full description

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.

About

カスタムアラーム

Features
Read full description

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

Soundless Timer4 screens
カスタムアラーム4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 3 level
Soundless Timer versus カスタムアラーム: the parameters behind the verdict, then further details
ParameterSoundless Timerカスタムアラーム
PriceFreeFree
Update frequencyEvery 8 days — betterEvery 4 weeks
AdsYesNo — better
In-app purchasesNo — betterYes
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size11 MB39 MB
Age rating4+4+
DeveloperGEN HIOKITAKUTO YOSHINO

In-app purchases

None

Soundless Timer

No in-app purchases

1 purchases

カスタムアラーム

One-time1
  • Pro Plan$2.99

Questions

Is Soundless Timer free?
Soundless Timer is free to download, with no in-app purchases.
Is カスタムアラーム free?
カスタムアラーム is free to download, with in-app purchases available.
Do Soundless Timer or カスタムアラーム have ads?
Soundless Timer shows ads; カスタムアラーム does not.
Which is updated more often, Soundless Timer or カスタムアラーム?
Soundless Timer ships an update every 8 days, and カスタムアラーム every 4 weeks. Most recently, Soundless Timer was updated on November 9, 2026 and カスタムアラーム on November 5, 2026.

Other comparisons