小书亭 vs Timer4
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
小书亭
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阅读并不孤单，与许许多多的书友在一起追书！ 【功能描述】 1、每日打卡，记录阅读项目、阅读时长，仪式感满满～ 2、日打卡、周打卡、总打卡数据回顾，喜欢收纳打卡的小伙伴快来～ 3、搜索优化，惊喜功能等你探索～～～ 与屏幕后的无数书友来一起来小书亭打卡吧！
Timer4
This app offers a unique timer experience by automatically adjusting countdown durations based on your device's orientation. Simply rotate your phone to switch between preset intervals with a physics-driven interface and immersive haptic feedback.
- Physics-based interface
- Instant duration switching via rotation
- Smart motion detection
- Immersive haptic feedback
- Customizable timer presets
- Intuitive orientation control
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Timer4 is an innovative timer app that automatically sets the countdown based on your device’s orientation. Using CoreMotion, it precisely detects angles and instantly switches presets with a physics-driven UI that reacts to gravity. - Upright → 5 minutes - Left → 10 minutes - Upside down → 30 minutes - Right → 1 hour Just rotate your device to switch durations instantly, without pressing any buttons. # Key Features - Physics-based interface Experience objects that bounce and collide naturally as they react to gravity. The interface stays level and smoothly rotates when the device changes orientation. - Instant duration switching Switch between commonly used timer intervals simply by rotating your device, no menus or settings required. - Smart motion detection Powered by advanced CoreMotion tracking for precise, responsive, and seamless orientation changes. - Immersive haptic feedback Feel realistic tactile responses when objects collide with boundaries. # Perfect For Pomodoro focus sessions Cooking and baking Workout intervals Meditation and stretching Study and break cycles Brewing tea Quick reminders All four orientations can be customized to fit your personal workflow. Easy — Set the time just by rotating Intuitive — Orientation determines the duration Beautiful — Smooth animations and realistic physics Flexible — Premium customization for power users Change the way you use timers. Experience Timer4 now. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: 小书亭 at 5.0 against Timer4's 3.8. 小书亭 also leads on in-app purchases (none vs 1) and iOS requirement (15.6 vs 26.0). Timer4's advantage is ratings volume (5 vs 1). On price, update cadence, ads 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. Timer4 sells 1 one-off in-app purchase. 小书亭 asks for nothing beyond the download.
小书亭 holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: Timer4 has 5 ratings behind it against 1, so its average is the more settled of the two.
小书亭 ships an update monthly, Timer4 every 3 weeks. The most recent releases landed on September 17, 2026 and August 15, 2026 respectively.
| Parameter | 小书亭 | Timer4 |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 3.8 (5 ratings) |
| Positive reviews | — | 28.6% of reviews |
| Number of ratings | 1 | 5 — better |
| Update frequency | Monthly | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.6 — better | 26.0 |
| Further details — not scored | ||
| Size | 70 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | 林 袁 | Goateraction |
In-app purchases
小书亭
No in-app purchases
Timer4
- Lifetime Access$4.99
