ChronoRate vs TimeSync
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ChronoRate
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ChronoRate is a precision toolkit for mechanical watch enthusiasts who want to measure accuracy, monitor performance, record watch details, and manage their collection in one place. Use atomic clock synchronization to record time deviation with confidence, then track each watch over time with clear trends and historical records. For deeper analysis, ChronoRate includes timegrapher tools to help you evaluate rate, beat error, amplitude, and overall movement performance. ChronoRate also helps you keep a complete record of each watch, including movement caliber, lift angle, warranty dates, and service or oil maintenance history. The watch overview page brings key details together so you can quickly review the full profile of every watch in your collection. Whether you are checking a newly purchased watch, comparing positions, following long-term changes in daily rate, or maintaining service records, ChronoRate helps you build a clearer picture of how your watches are performing over time. Features: • Measure watch accuracy with atomic clock sync • Run timegrapher tests on your device • Evaluate rate, beat error, amplitude, and movement performance • Track historical performance and daily trends • Manage your watch collection and individual records • Record movement caliber, lift angle, warranty dates, and service history • View a complete watch information overview page • Check dynamic mechanical moon phase information • View detailed statistics and performance insights • Organize measurements by watch and timing round ChronoRate is designed for collectors, hobbyists, and enthusiasts who want a practical and focused tool for understanding, recording, and maintaining mechanical watch performance.
TimeSync
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TimeSyncは、NTP(Network Time Protocol)サーバーと通信して正確な時刻を取得し、お使いの端末との時刻差を表示するシンプルな時計アプリです。 ■ 主な機能 ・NTPサーバーとの通信による正確な時刻取得 ・端末の時刻とのズレをミリ秒単位で表示 ・通信の往復遅延(RTT)を表示 ・ワンタップで再同期 ■ 4種類のデザインから選べる 設定画面から、お好みの見た目に切り替えられます。 ・Cosmic: 宇宙と地球をモチーフにしたダークテーマ ・Pastel: 淡い色使いの明るいテーマ ・Cyber: ターミナル風の緑基調テーマ ・Analog: 実際に針が動くアナログ時計 ■ 多言語対応 日本語・English・简体中文・繁體中文・한국어・Español・Français・Deutschに対応しています。 無料でお使いいただけます(広告表示あり)。広告を非表示にするApp内課金もご用意しています。
Screenshots
Verdict
The clearest difference is ads: ChronoRate at none against TimeSync's shown. TimeSync's advantage is update cadence (every 2 days vs every 3 weeks). On price, in-app purchases, 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. ChronoRate sells 1 one-off in-app purchase and TimeSync sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
ChronoRate ships an update every 3 weeks, TimeSync every 2 days. The most recent releases landed on October 8, 2026 and October 22, 2026 respectively.
| Parameter | ChronoRate | TimeSync |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | Every 2 days — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Chieh Chung Tsou | YOSHITADA SAITO |
In-app purchases
ChronoRate
- Pro Upgrade$7.99
TimeSync
- 広告削除$0.49









