# Convert-O-Matic Free — user reviews

> 8 indexed App Store user reviews of Convert by John Mann, rated 1.87/5 from 45 ratings.

- Source: https://appshunter.io/ios/app/convert-o-matic-free/id367027783/reviews
- App overview in markdown: https://appshunter.io/ios/app/convert-o-matic-free/id367027783.md

## Most critical reviews (8 lowest-rated)

### 1/5 — Fail

*2011-04-18*

I tried to use this in my classroom...cm to feet is NOT accurate!

### 1/5 — NOT ACCURATE

*2011-02-11*

Nice Idea but not accurate.

A quick check.... -10 deg. C. to 22deg. F.
But 22 F. Says -5.6 C.

Another.....  1MPH equals 6326.0 Km/h.  Not accurate even if you realize it should be about 1.6.

Send this app back.

### 1/5 — wrong results for temperature

*2010-09-18*

The app doesn't convert from Celsius to Fahrenheit correctly.

It says 5 degrees Celsius is 37 degrees Fahrenheit. Just ask Google:

5 degrees Celsius in Fahrenheit

and you see it should be 41 degrees Fahrenheit.

I didn't bother to check other units.

### 1/5 — Speed

*2010-08-05*

Is it me? Are the speed conversions absurdly wrong? MPH/KPH give ridiculous results.

### 1/5 — Not worth the price

*2010-08-02*

Absolutely useless. Seven if free, conversions should be accurate. 1 meter equals 0 feet is kind of

### 1/5 — Horrors!

*2010-06-30*

First conversion I tried was grossly in error. VELOCITY: It reported 60.0 miles per hour = 380,160 kilometers per hour!!!

### 1/5 — Needs Some Work

*2010-04-13*

I haven't tried all the conversions, but the "Celcius" (sp) to Fahrenheit conversions are not accurate (e.g., 25 C returns 57 F, when correct conversion should be 77 F).

### 3/5 — Missing volume conversion!

*2010-04-19*

Title says it all... Otherwise assuming accuracy, this a nice app! Best thing about it is it's free!

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-29.*