# AutoTech vs Unit Converter

The clearest difference is price: Unit Converter at Free against AutoTech's $1.99. Unit Converter also leads on update cadence (every 2 weeks vs every 32 months) and iOS requirement (12.0 vs 15.6). AutoTech's advantage is in-app purchases (none vs 1). On ads and device support there is nothing between them.

Unit Converter is free to download; AutoTech costs $1.99 up front. Unit Converter sells 1 one-off in-app purchase. AutoTech asks for nothing beyond the download.

AutoTech ships an update every 32 months, Unit Converter every 2 weeks. The most recent releases landed on September 10, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | AutoTech | Unit Converter |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 32 months | **Every 2 weeks** |
| Monetization | Paid | — |
| Size | 2 MB | 29 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Steven Clarner](https://appshunter.io/developer/410979939) | [伟鹏 李](https://appshunter.io/developer/1817642925) |

## What reviewers say

### AutoTech

[App page](https://appshunter.io/ios/app/autotech/id410979934)

This automotive calculator provides quick computations for over 45 formulas across various vehicle systems. It supports both U.S. and metric units, making it a versatile tool for mechanics, technicians, and enthusiasts.

**Highlights:** 45+ automotive formulas, Aerodynamics calculations, Chassis calculations, Drivetrain calculations, Engine calculations, Performance calculations, Suspension calculations, Tire calculations

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

**In-app purchases:** none


### Unit Converter

[App page](https://appshunter.io/ios/app/unit-converter-easyunit/id6754090225)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Premium Membership | $0.99 | one-time |


## Frequently asked questions

### Is AutoTech free?

AutoTech costs $1.99, with no in-app purchases.

### Is Unit Converter free?

Unit Converter is free to download, with in-app purchases available.

### Do AutoTech or Unit Converter have ads?

Neither AutoTech nor Unit Converter shows ads.

### Which is updated more often, AutoTech or Unit Converter?

AutoTech ships an update every 32 months, and Unit Converter every 2 weeks. Most recently, AutoTech was updated on September 10, 2026 and Unit Converter 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.*