# Marlin Controls Stellar BLE vs YX battery

The clearest difference is update cadence: Marlin Controls Stellar BLE at fortnightly against YX battery's every 2 months. YX battery's advantage is iOS requirement (12.0 vs 14.0). 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.

Marlin Controls Stellar BLE ships an update fortnightly, YX battery every 2 months. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Marlin Controls Stellar BLE | YX battery |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Size | 4 MB | 44 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Marlin Controls, Inc.](https://appshunter.io/developer/598974769) | [Shenzhen Tuodatong Electronics Co., Ltd.](https://appshunter.io/developer/1618577296) |

## What reviewers say

### Marlin Controls Stellar BLE

[App page](https://appshunter.io/ios/app/marlin-controls-stellar-ble/id6448637762)

**Features:** macOS Compatibility

**In-app purchases:** none


### YX battery

[App page](https://appshunter.io/ios/app/yx-battery/id6761040548)

**In-app purchases:** none


## Frequently asked questions

### Is Marlin Controls Stellar BLE free?

Marlin Controls Stellar BLE is free to download, with no in-app purchases.

### Is YX battery free?

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

### Do Marlin Controls Stellar BLE or YX battery have ads?

Neither Marlin Controls Stellar BLE nor YX battery shows ads.

### Which is updated more often, Marlin Controls Stellar BLE or YX battery?

Marlin Controls Stellar BLE ships an update fortnightly, and YX battery every 2 months. Most recently, Marlin Controls Stellar BLE was updated on November 3, 2026 and YX battery on November 5, 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.*