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.
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.
- 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
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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.
ずんだチャイム
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
30minTimer ships an update every 3 weeks, ずんだチャイム every 9 days. Both last shipped on October 31, 2026.
| Parameter | 30minTimer | ずんだチャイム |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (1 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 weeks | Every 9 days — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 18.5 | 16.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 185 MB |
| Age rating | 4+ | 4+ |
| Developer | hidenobu akiyoshi | masatomo ota |
In-app purchases
30minTimer
No in-app purchases
ずんだチャイム
No in-app purchases









