# Converter vs A/C Pro

The clearest difference is review sentiment: Converter at 100% against A/C Pro's 27%. Converter also leads on rating (5.0 vs 2.1). A/C Pro's advantage is price (Free vs $2.99) and ratings volume (293 vs 3). On update cadence, ads, in-app purchases and device support there is nothing between them.

A/C Pro is free to download; Converter costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Converter holds the better App Store score, 5.0 against 2.1. That said, the two scores are not equally well evidenced: A/C Pro has 293 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 100% of Converter's written reviews are positive against 27% of A/C Pro's.

Converter ships an update every 6 months, A/C Pro every 4 months. The most recent releases landed on October 3, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Converter | A/C Pro |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/converter-calculator/id513419019/reviews)** | [2.1 (293 ratings)](https://appshunter.io/ios/app/ac-pro/id1496953441/reviews) |
| Number of ratings | 3 | **293** |
| Positive reviews | **100.0% of reviews** | 27.1% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 4 months** |
| Monetization | Paid | **Free** |
| Size | 74 MB | 192 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Dohmann Engineering Services](https://appshunter.io/developer/401682475) | [Energizer](https://appshunter.io/developer/1346066670) |

## What reviewers say

### Converter

[App page](https://appshunter.io/ios/app/converter-calculator/id513419019)

This comprehensive utility app offers a suite of 10 powerful conversion and calculation tools, including units, currency, scientific, and more. Designed by an engineer with decades of experience, it ensures accuracy and a user-friendly interface for a wide range of applications.

**Highlights:** Over 1700 units in 50+ categories, 160+ currencies supported, Hex-Decimal-Binary and IEEE754 converters, Scientific calculator with 38-digit precision, Amortization calculator, Reference charts and documents, Customizable unit lists and favorites

**Features:** macOS Compatibility

**In-app purchases:** none


### A/C Pro

[App page](https://appshunter.io/ios/app/ac-pro/id1496953441)

This app guides you through recharging your vehicle's air conditioning system with step-by-step instructions tailored to your specific car. It offers video tutorials, helps locate the low side pressure port, and provides essential vehicle specifications for a successful DIY recharge.

**Highlights:** Step-by-step vehicle-specific instructions, Bluetooth connectivity with Smartcharge™ gauge, Instructional videos, Low side port finder, A/C spec database, Troubleshooting guide

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

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Helpful step-by-step instructions
- 🚀 Effective at recharging AC
- 👍 Clear and informative videos

**What reviewers complain about**

- 🐛 App crashes or doesn't work
- 🐛 UPC code not recognized
- 🐛 Incorrect vehicle information
- 🔒 Requires too many permissions
- 🔒 Forced to create account

**Reported bugs**

- App crashes when trying to enter UPC code
- Vehicle information not loading properly
- Bluetooth connection issues

**Requested features**

- Option to bypass app and use analog gauge
- More comprehensive vehicle database
- Closed captions for instructional videos


## Frequently asked questions

### Is Converter free?

Converter costs $2.99, with no in-app purchases.

### Is A/C Pro free?

A/C Pro is free to download, with no in-app purchases.

### Which has better reviews, Converter or A/C Pro?

Converter is rated higher. Converter averages 5.0 out of 5 from 3 ratings, while A/C Pro averages 2.1 from 293 ratings.

### Do Converter or A/C Pro have ads?

Neither Converter nor A/C Pro shows ads.

### Which is updated more often, Converter or A/C Pro?

Converter ships an update every 6 months, and A/C Pro every 4 months. Most recently, Converter was updated on October 3, 2026 and A/C Pro on October 19, 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.*