keyes arm vs RCT RESS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
keyes arm
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这是一个用于控制keyestudio的4自由度机械臂的蓝牙4.0 APP
RCT RESS
Monitor and manage inverters and energy storage systems. Developed by an energy storage company, this app offers convenient control over household, industrial, and grid energy solutions.
- Monitor inverters
- Manage energy storage systems
- Household energy solutions
- Industrial energy solutions
- Grid energy solutions
- System monitoring
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RCT RSS is developed by RCT Power, which is convenient for users to use and monitor inverters and energy storage systems. RCT Power is an energy storage system company integrating R&D, production and sales. The products and technologies come from Lake Constance in Germany, and the products cover household, industrial and grid energy storage. In terms of household energy storage, we are one of the few providers of overall system solutions in the world. The three major architectures of energy storage, battery modules, inverter modules and energy management, are all developed and produced by the company itself.
Screenshots
Verdict
The clearest difference is update cadence: RCT RESS at monthly against keyes arm's every 19 months. keyes arm's advantage is iOS requirement (12.0 vs 15.6). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
keyes arm ships an update every 19 months, RCT RESS monthly. The most recent releases landed on October 29, 2026 and October 15, 2026 respectively.
| Parameter | keyes arm | RCT RESS |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Number of ratings | — | 2 — better |
| Update frequency | Every 19 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 11 MB | 39 MB |
| Age rating | 4+ | 12+ |
| Developer | 克俭 左 | Jiangsu RCT Power Energy Technology Co., Ltd |
In-app purchases
keyes arm
No in-app purchases
RCT RESS
No in-app purchases
