# AutoTech vs Fast Converter Pro

The clearest difference is review sentiment: AutoTech at 100% against Fast Converter Pro's 0%. Fast Converter Pro's advantage is price (Free vs $1.99) and update cadence (monthly vs every 32 months). On ads, in-app purchases and device support there is nothing between them.

Fast Converter Pro is free to download; AutoTech costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

AutoTech ships an update every 32 months, Fast Converter Pro monthly. The most recent releases landed on September 10, 2026 and June 2, 2026 respectively.

## The numbers

| Metric | AutoTech | Fast Converter Pro |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 32 months | **Monthly** |
| Monetization | Paid | **Free** |
| Size | 2 MB | 22 MB |
| Requires iOS | 15.6 | **10.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Steven Clarner](https://appshunter.io/developer/410979939) | [JUPITER TEKNOLOJI SANAYI VE TICARET LIMITED SIRKETI](https://appshunter.io/developer/1400061771) |

## 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


### Fast Converter Pro

[App page](https://appshunter.io/ios/app/fast-converter-pro-units/id1358772909)

This utility app offers a smart and elegant tool for converting between various units of measurement. It covers over 9 common categories, including length, temperature, mass, and volume, with a simple and optimized user interface.

**Highlights:** 9+ unit categories, Length conversion, Temperature conversion, Mass conversion, Volume conversion, Simple UI

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AutoTech free?

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

### Is Fast Converter Pro free?

Fast Converter Pro is free to download, with no in-app purchases.

### Do AutoTech or Fast Converter Pro have ads?

Neither AutoTech nor Fast Converter Pro shows ads.

### Which is updated more often, AutoTech or Fast Converter Pro?

AutoTech ships an update every 32 months, and Fast Converter Pro monthly. Most recently, AutoTech was updated on September 10, 2026 and Fast Converter Pro on June 2, 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.*