# EMBTuner vs EWATT

The clearest difference is update cadence: EMBTuner at fortnightly against EWATT's every 2 months. EWATT's advantage is iOS requirement (13.0 vs 15.4). 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.

EMBTuner ships an update fortnightly, EWATT every 2 months. The most recent releases landed on May 14, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | EMBTuner | EWATT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (11 ratings)](https://appshunter.io/ios/app/embtuner/id1605550971/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Free | — |
| Size | 58 MB | 24 MB |
| Requires iOS | 15.4 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Riley Houston](https://appshunter.io/developer/1605550973) | [帆 刘](https://appshunter.io/developer/1706245535) |

## What reviewers say

### EMBTuner

[App page](https://appshunter.io/ios/app/embtuner/id1605550971)

This utility app provides advanced control for specific ASI controllers tuned by E-Moto Bros. Users can access special parameters for calibration, saving settings to flash memory, and throttle adjustments.

**Highlights:** Controller calibration, Save to flash functionality, Throttle tuning, Extended parameter access, ASI controller support

**In-app purchases:** none


### EWATT

[App page](https://appshunter.io/ios/app/ewatt-bms/id6464585303)

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

**In-app purchases:** none


## Frequently asked questions

### Is EMBTuner free?

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

### Is EWATT free?

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

### Do EMBTuner or EWATT have ads?

Neither EMBTuner nor EWATT shows ads.

### Which is updated more often, EMBTuner or EWATT?

EMBTuner ships an update fortnightly, and EWATT every 2 months. Most recently, EMBTuner was updated on May 14, 2026 and EWATT on September 7, 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.*