Comparison

30minTimer vs ずんだチャイム

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

Head to head
About

30minTimer

This app provides timely audio alerts at user-defined intervals, such as every hour or half-hour. It's designed to help users manage their time effectively for work, study, or daily routines by offering customizable chimes and voice notifications. Settings are saved locally on the device for privacy.

Highlights
  • Customizable chime intervals
  • Hourly and half-hourly alerts
  • Multiple sound and voice options
  • User-defined active hours
  • Local notification scheduling
  • Ad-supported with non-intrusive ads
Features
Read full description

Ever look up and realize three hours vanished into one task? This app fixes that with a simple chime. Your iPhone chimes at the minutes you choose, like :00 and :30 every hour, so you can feel time passing without checking the clock. Chimes arrive as notifications, even when the app is closed. ■ Great for • Remote work: break the day into half-hour blocks • Study: focus for 50 minutes, rest when it chimes • Healthy habits: a sip of water and a stretch at every chime • Kids' routines: when the "Oh!" plays, it's time for the next thing ■ Pick your hours • Tap the hours you want, from 0 to 23 • "9–18" and "All hours" in one tap. Quiet at night ■ Up to two chimes an hour • Spin two wheels to pick the minutes • :00 and :30, :15 and :45, or just :50. Your call ■ 7 sounds, even a voice • Chime, Warning, and three Confirm tones • Male and female "Oh!" voices • Give each wheel its own sound: a chime on the hour and an "Oh!" at half past • Tap a name to preview ■ Three simple steps 1. Pick your hours and minutes 2. Tap the big "Apply" button at the bottom 3. It chimes automatically, every day Send a test notification to hear it in 10 seconds. ■ Free, with minimal ads • Ads never interrupt your chimes • Your first "Apply" is ad-free • Later changes are saved after a short video ad • Turning notifications on/off and "Clear all" are always instant and ad-free ■ Privacy • Your settings stay on your iPhone • Chimes are local notifications scheduled on your iPhone. No developer server is involved Available in English, Japanese, and Traditional Chinese. Note: in Silent mode or a Focus, sounds may not play, following your iPhone settings.

About

ずんだチャイム

Features
Read full description

30分ごと・毎時0分など、指定した時刻にかわいい声で時刻をお知らせする時報アプリです。 ・ずんだもん / 四国めたん / 春日部つむぎ の3ボイス+ランダムモード ・音声はすべて端末内で合成(インターネット接続・データ送信は一切ありません) ・通知として読み上げるので、アプリを閉じていてもお知らせします ・鳴らす時間帯(例: 8時〜19時)、間隔(1/15/30/60分)、事前予告(例: 10分前)を設定 ・声のテスト再生に対応 ※サイレントスイッチ/集中モードがオンのときは通知音が鳴らない場合があります。 音声合成: VOICEVOX (voicevox_core) クレジット: VOICEVOX:ずんだもん / VOICEVOX:四国めたん / VOICEVOX:春日部つむぎ 各キャラクターの利用規約に従ってご利用ください。

Screenshots

30minTimer4 screens
ずんだチャイム2 screens

Verdict

The call

The clearest difference is ads: ずんだチャイム at none against 30minTimer's shown. ずんだチャイム also leads on update cadence (every 9 days vs every 3 weeks) and iOS requirement (16.0 vs 18.5). On price, 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

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

30minTimer ships an update every 3 weeks, ずんだチャイム every 9 days. Both last shipped on October 31, 2026.

Scorecard3 real differences · 7 level
30minTimer versus ずんだチャイム: the parameters behind the verdict, then further details
Parameter30minTimerずんだチャイム
PriceFreeFree
Rating3.0 (1 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 3 weeksEvery 9 days — better
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS18.516.0 — better
Further details — not scored
Size8 MB185 MB
Age rating4+4+
Developerhidenobu akiyoshimasatomo ota

In-app purchases

None

30minTimer

No in-app purchases

None

ずんだチャイム

No in-app purchases

Questions

Is 30minTimer free?
30minTimer is free to download, with no in-app purchases.
Is ずんだチャイム free?
ずんだチャイム is free to download, with no in-app purchases.
Do 30minTimer or ずんだチャイム have ads?
30minTimer shows ads; ずんだチャイム does not.
Which is updated more often, 30minTimer or ずんだチャイム?
30minTimer ships an update every 3 weeks, and ずんだチャイム every 9 days. Most recently, 30minTimer was updated on October 31, 2026 and ずんだチャイム on October 31, 2026.

Other comparisons