# bootmod3 vs ECUSpecs

The clearest difference is update cadence: bootmod3 at every 5 days against ECUSpecs's every 5 months. ECUSpecs's advantage is iOS requirement (13.0 vs 15.0). 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.

bootmod3 ships an update every 5 days, ECUSpecs every 5 months. The most recent releases landed on October 14, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | bootmod3 | ECUSpecs |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (1.8K ratings)](https://appshunter.io/ios/app/bootmod3/id1170348811/reviews)** | — |
| Number of ratings | **1.8K** | — |
| Positive reviews | 70.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 5 months |
| Monetization | Paid | — |
| Size | 178 MB | 25 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [PRO TUNING FREAKS INC.](https://appshunter.io/developer/1170348810) | [Miguel Acha](https://appshunter.io/developer/1866657789) |

## What reviewers say

### bootmod3

[App page](https://appshunter.io/ios/app/bootmod3/id1170348811)

This platform enables users to unlock the full performance potential of their BMW, Mini, and Toyota Supra vehicles by flashing the factory ECU and TCU. It offers features like map switching, flex fuel tuning, and anti-lag, allowing for significant horsepower gains and custom performance adjustments.

**Highlights:** ECU and TCU flashing, Map switching via steering wheel, Flex Fuel tuning, Anti-Lag functionality, Live monitoring and datalogging, Customizable map editor

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

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use app
- 🚀 Fast flashing and tuning
- 💪 Excellent performance gains
- 🔧 Great customization and tuning options
- ⭐ Fantastic customer support

**What reviewers complain about**

- 🐛 Occasional connectivity issues
- 🔍 Difficulty with certain features (e.g. burbles, code clearing)
- 🤔 Compatibility problems with newer iOS versions
- 🧰 Concerns about bricking ECU

**Reported bugs**

- App crashes or freezes after updates
- Inability to connect to car after iOS updates
- Trouble with flashing and tune loading

**Requested features**

- Add support for more BMW models
- Improve app UI/UX for better usability
- Expand customization options (e.g. cold start, map selection)
- Enhance data logging and diagnostics


### ECUSpecs

[App page](https://appshunter.io/ios/app/ecuspecs/id6757405815)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is bootmod3 free?

bootmod3 is free to download, with no in-app purchases.

### Is ECUSpecs free?

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

### Do bootmod3 or ECUSpecs have ads?

Neither bootmod3 nor ECUSpecs shows ads.

### Which is updated more often, bootmod3 or ECUSpecs?

bootmod3 ships an update every 5 days, and ECUSpecs every 5 months. Most recently, bootmod3 was updated on October 14, 2026 and ECUSpecs 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.*