Coaster Sleep vs Rubjoy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Coaster Sleep
Control dual or single motor devices for beds and sofas. Improve your quality of life with this smart home application.
- Dual motor device control
- Single motor device control
- Bed application
- Sofa application
- Smart home integration
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Coaster Sleep 旨在改善客户的生活质量。如果您对我们的产品有任何意见或建议,请登录www.richmat.com发送您的反馈。您可以参考我们网站上发布的最新信息。 Coaster Sleep 是一种使用手机控制双电机设备或单电机设备,用于床或沙发应用。详情请访问www.richmat.com。
Rubjoy
Control an advanced robotic arm with your smartphone. This app connects via Bluetooth to a micro-controller, allowing you to operate powerful servo motors for complex tasks. It's designed for a serious robotic platform, not a simple toy.
- Bluetooth connectivity
- Control servo motors
- Advanced robotics
- Smartphone interface
- Micro-controller integration
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RUBJOY is controlled by a smartphone app that connects via Bluetooth to the advanced robotics micro controller. RUBJOYS arms are driven by two powerful metal geared digital servo motors that do all the HARD work. RUBJOY is an actual robot, not a toy.
Screenshots
Verdict
The clearest difference is review sentiment: Rubjoy at 100% against Coaster Sleep's 0%. Rubjoy also leads on rating (5.0 vs 1.0). Coaster Sleep's advantage is update cadence (every 5 weeks vs every 6 months). On price, ratings volume, ads and in-app purchases 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.
Rubjoy holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews point the same way: 0% of Coaster Sleep's written reviews are positive against 100% of Rubjoy's.
Coaster Sleep ships an update every 5 weeks, Rubjoy every 6 months. The most recent releases landed on October 12, 2026 and October 7, 2026 respectively.
| Parameter | Coaster Sleep | Rubjoy |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (2 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 5 weeks — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 | 10.0 |
| Further details — not scored | ||
| Size | 77 MB | 82 MB |
| Age rating | 4+ | 17+ |
| Developer | Qingdao Richmat Intelligence Technology Inc. | WINKGRIN LLC |
Customer experience
Coaster Sleep
Rubjoy
In-app purchases
Coaster Sleep
No in-app purchases
Rubjoy
No in-app purchases
