# Sunstone Batteriemonitor vs RCT.

The clearest difference is update cadence: RCT. at every 8 days against Sunstone Batteriemonitor's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Sunstone Batteriemonitor ships an update every 2 months, RCT. every 8 days. Both last shipped on September 30, 2026.

## The numbers

| Metric | Sunstone Batteriemonitor | RCT. |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 8 days** |
| Monetization | Free | — |
| Size | 24 MB | 96 MB |
| Requires iOS | **13.0** | 13.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [志运 陈](https://appshunter.io/developer/942077334) | [Future App Technology](https://appshunter.io/developer/1829962178) |

## What reviewers say

### Sunstone Batteriemonitor

[App page](https://appshunter.io/ios/app/sunstone-batteriemonitor/id1561341696)

Monitor your rechargeable lithium iron phosphate battery's performance with this utility app. It displays various battery parameters and supports both English and German languages.

**Highlights:** Connects to Sunstone Power batteries, Displays battery parameters, Supports English language, Supports German language

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### RCT.

[App page](https://appshunter.io/ios/app/rct/id6737491921)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Sunstone Batteriemonitor free?

Sunstone Batteriemonitor is free to download, with no in-app purchases.

### Is RCT. free?

RCT. is free to download, with no in-app purchases.

### Do Sunstone Batteriemonitor or RCT. have ads?

Neither Sunstone Batteriemonitor nor RCT. shows ads.

### Which is updated more often, Sunstone Batteriemonitor or RCT.?

Sunstone Batteriemonitor ships an update every 2 months, and RCT. every 8 days. Most recently, Sunstone Batteriemonitor was updated on September 30, 2026 and RCT. on September 30, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*