# BimmerUtility vs BuildSpec

The clearest difference is review sentiment: BuildSpec at 100% against BimmerUtility's 20%. BuildSpec also leads on rating (5.0 vs 3.9). BimmerUtility's advantage is ratings volume (38 vs 1) and device support (3 vs 1). On price, update cadence, ads 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.

BuildSpec holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: BimmerUtility has 38 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 20% of BimmerUtility's written reviews are positive against 100% of BuildSpec's.

BimmerUtility ships an update every 2 months, BuildSpec every 3 months. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | BimmerUtility | BuildSpec |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (38 ratings)](https://appshunter.io/ios/app/bimmerutility/id1659309891/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/buildspec-car-builds/id6758304475/reviews)** |
| Number of ratings | **38** | 1 |
| Positive reviews | 20.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free | Free |
| Size | 193 MB | 11 MB |
| Requires iOS | **14.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 9+ |
| Developer | [Robert Hebb](https://appshunter.io/developer/1659309893) | [Grant Johnson](https://appshunter.io/developer/1866959368) |

## What reviewers say

### BimmerUtility

[App page](https://appshunter.io/ios/app/bimmerutility/id1659309891)

A lightweight tool for editing vehicle configuration files like FDL, NCD, and FA. It allows users to save diagnostic reports and compare different vehicle software versions.

**Highlights:** Edit FDL, NCD, & FA files, Save diagnostic reports, Compare SVT & NCD files, Lightweight toolset

**Features:** macOS Compatibility

**In-app purchases:** none


### BuildSpec

[App page](https://appshunter.io/ios/app/buildspec-car-builds/id6758304475)

Easily track, organize, and showcase your car modification projects. Log parts, costs, and installation details for multiple vehicles in a structured, searchable garage. Designed for car builders and modifiers to maintain a complete build history.

**Highlights:** Track modifications and parts, Log costs and installation details, Maintain build history, Create multiple vehicle profiles, Store specifications and photos, Organized garage dashboard

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

**In-app purchases:** none


## Frequently asked questions

### Is BimmerUtility free?

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

### Is BuildSpec free?

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

### Which has better reviews, BimmerUtility or BuildSpec?

BuildSpec is rated higher. BimmerUtility averages 3.9 out of 5 from 38 ratings, while BuildSpec averages 5.0 from 1 ratings.

### Do BimmerUtility or BuildSpec have ads?

Neither BimmerUtility nor BuildSpec shows ads.

### Which is updated more often, BimmerUtility or BuildSpec?

BimmerUtility ships an update every 2 months, and BuildSpec every 3 months. Most recently, BimmerUtility was updated on October 24, 2026 and BuildSpec on October 10, 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.*