- Timekeeper - vs Dual Timer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
- Timekeeper -
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A timekeeper including countdown mode with bells for presentation and so on. Of course no Ads! Multiple timekeepers supported. Progress can still be checked by color when the device is muted.
Dual Timer
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Dual Timer は、上下に2つのタイマーを表示できるシンプルなタイマーアプリです。 カウントアップ／カウントダウンの切り替え、時間設定、赤表示しきい値などを用途に合わせて調整できます。 現在時刻を表示し、指定した時刻にベルを鳴らすことも可能です。 上下それぞれ個別にスタート／ストップ／リセット 両方同時のスタート／ストップ／リセットに対応 外部ディスプレイ（USB-C接続）へタイマー表示を出力可能 黒背景＋大きな数字で視認性重視 指定した時間にベルを鳴らします（３回まで対応） 授業、プレゼン、発表会、会議、トレーニング、試合運用など、時間管理が必要な場面で活躍します。
Screenshots
Verdict
The clearest difference is update cadence: Dual Timer at every 5 days against - Timekeeper -'s fortnightly. - Timekeeper -'s advantage is iOS requirement (15.0 vs 17.6). 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.
- Timekeeper - ships an update fortnightly, Dual Timer every 5 days. The most recent releases landed on October 2, 2026 and October 11, 2026 respectively.
| Parameter | - Timekeeper - | Dual Timer |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 1 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Minshun Yang | kiyoshi yamamoto |
In-app purchases
- Timekeeper -
No in-app purchases
Dual Timer
No in-app purchases
Questions
Is - Timekeeper - free?
Is Dual Timer free?
Do - Timekeeper - or Dual Timer have ads?
Which is updated more often, - Timekeeper - or Dual Timer?
Other comparisons
