# bootmod3 vs DragCalc

The clearest difference is review sentiment: bootmod3 at 70% against DragCalc's 0%. bootmod3 also leads on rating (4.9 vs 3.0) and ads (none vs shown). DragCalc's advantage is monetization model (ad-supported vs paid). On price and in-app purchases there is nothing between them.

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

bootmod3 holds the better App Store score, 4.9 against 3.0. That said, the two scores are not equally well evidenced: bootmod3 has 1.9K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 70% of bootmod3's written reviews are positive against 0% of DragCalc's.

bootmod3 ships an update every 5 days, DragCalc every 5 months. The most recent releases landed on October 16, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | bootmod3 | DragCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (1.9K ratings)](https://appshunter.io/ios/app/bootmod3/id1170348811/reviews)** | [3.0 (1 ratings)](https://appshunter.io/ios/app/dragcalc/id6758584657/reviews) |
| Number of ratings | **1.9K** | 1 |
| Positive reviews | **70.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 5 days** | Every 5 months |
| Monetization | Paid | **Ad-supported** |
| Size | 179 MB | 17 MB |
| Requires iOS | **15.0** | 18.1 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [PRO TUNING FREAKS INC.](https://appshunter.io/developer/1170348810) | [Sheharyar Irfan](https://appshunter.io/developer/974971911) |

## 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


### DragCalc

[App page](https://appshunter.io/ios/app/dragcalc/id6758584657)

This app predicts drag racing performance metrics like quarter-mile times and trap speeds using a physics-based simulation. It allows users to input car specifications, compare different builds, and analyze real-world runs.

**Highlights:** AI-powered car input, Quarter & Eighth Mile ET/trap speed predictions, Side-by-side car build comparison, Slope correction for track grade, Analysis of imported run data, Cloud sync for presets

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is bootmod3 free?

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

### Is DragCalc free?

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

### Which has better reviews, bootmod3 or DragCalc?

bootmod3 is rated higher. bootmod3 averages 4.9 out of 5 from 1.9K ratings, while DragCalc averages 3.0 from 1 ratings.

### Do bootmod3 or DragCalc have ads?

DragCalc shows ads; bootmod3 does not.

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

bootmod3 ships an update every 5 days, and DragCalc every 5 months. Most recently, bootmod3 was updated on October 16, 2026 and DragCalc on October 13, 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.*