Rubber Clock vs SleepLight睡前夜灯
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Rubber Clock
Design a personalized digital clock by inputting text or uploading an image. Create unique time displays, from pet-themed clocks to countdown timers for important events.
- Create custom digital clocks
- Use text input for designs
- Upload photos for clock faces
- Design pet-themed clocks
- Set countdown timers
- Create bedside clocks
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Initial release of Rubber Clock. Create your own digital clock by typing a sentence or uploading a favorite photo. Make a cozy pet clock, a countdown for a special day, or a relaxing bedside clock. Turn time into something that feels like yours.
SleepLight睡前夜灯
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SleepLight is a focused bedtime utility for the last few minutes before sleep. Set a short countdown, turn on the device light when available, and let the app guide the light off when the time is over. It is designed for simple use: no account, no cloud setup, no feeds, no distractions. On devices where torch control is unavailable, SleepLight can use a bright white screen fallback. SleepLight cannot change iOS Auto-Lock settings directly. For the smoothest flow, keep the app open during the countdown and review Auto-Lock in iOS Settings if needed.
Screenshots
Verdict
The clearest difference is in-app purchases: SleepLight睡前夜灯 at none against Rubber Clock's 3. On price, ads, 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. Rubber Clock sells 3 one-off in-app purchases. SleepLight睡前夜灯 asks for nothing beyond the download.
| Parameter | Rubber Clock | SleepLight睡前夜灯 |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 5 days | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone |
| Requires iOS | 18.4 | 17.0 — better |
| Further details — not scored | ||
| Size | 111 MB | 4 MB |
| Age rating | 4+ | 17+ |
| Developer | 传河 张 | 中强 邓 |
In-app purchases
Rubber Clock
- Small Eraser Pack$0.99
- Medium Eraser Pack$1.99
- Large Eraser Pack$2.99
SleepLight睡前夜灯
No in-app purchases









