CoderWatch vs JiaClock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CoderWatch
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StopWatch for coding competitors! - measure your coding speed - share/record your results Note: This app is NOT an official stop-watch app for CodeJam/ AtCoder.
JiaClock
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JiaClock is an aesthetic clock app designed to be beautiful, practical, and distraction-free. Make time more than just numbers in the corner of the screen. Turn it into part of your desk, bedside, and moments of focus. 【Perfect For】 Focus Sessions · Bedside Display · Home Office · Home Screen Decoration 【Main Features】 • Digital Clock — Large immersive display, perfect for focused work and bedside use • Flip Clock — Classic flip-card design blending vintage and modern aesthetics • Transparent Clock — Overlay the clock on a live camera view with a glassmorphism interface. All camera content is previewed locally only and is never recorded or uploaded • Hourglass Clock — Watch flowing sand record the passage of your day • World Clock — Somewhere in the world, another sunrise or sunset is happening right now • Couple Clock — Share the same moment with someone special, view each other's local time, and keep memories of your shared moments 【Widgets】 • Small, Medium, and Large widget sizes • Sync with in-app settings • One-tap home screen customization • Minute-based updates for lower distraction and better battery life 【Personalization】 • Multiple beautiful themes • Flexible combinations of 12/24-hour format, seconds, date, and weekday display • Custom slogans to create your own sense of time and ritual 【Languages】 English, Simplified Chinese, Traditional Chinese, Japanese, Korean 【Pro Features】 • Use your own photos as Digital Clock backgrounds • Use your own photos as Flip Clock backgrounds • Automatically unlock future premium clock styles JiaClock. Quiet focus, right now. 使用条款(Terms of Use): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ 隐私政策(Privacy Policy): http://www.jdarray.com/privacy/privacy.html
Screenshots
Verdict
The clearest difference is in-app purchases: CoderWatch at none against JiaClock's 3. JiaClock's advantage is ads (none vs shown). On price, update cadence, 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. JiaClock sells 3 in-app purchases, starting at $0.99 per month. CoderWatch asks for nothing beyond the download.
CoderWatch ships an update weekly, JiaClock every 4 days. The most recent releases landed on October 10, 2026 and October 1, 2026 respectively.
| Parameter | CoderWatch | JiaClock |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly | Every 4 days — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.4 — better | 17.0 |
| Further details — not scored | ||
| Size | 6 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Tomoaki Yagishita | Beijing Boshujia Technology Co., Ltd |
In-app purchases
CoderWatch
No in-app purchases
JiaClock
- Xiaojia Clock Pro Monthly$0.991 Month
- Xiaojia Clock Pro Yearly$0.991 Year
- Xiaojia Clock Pro Lifetime$1.99









