# Unit Conversion - Converter and Calculator — user reviews > 110 indexed App Store user reviews of Unit Conversion by Fapps World et Cie S.E.C.S., rated 4.60/5 from 102 ratings. - Source: https://appshunter.io/ios/app/unit-conversion-converter-and-calculator/id336359986/reviews - App overview in markdown: https://appshunter.io/ios/app/unit-conversion-converter-and-calculator/id336359986.md - Rating breakdown: 5★ 79 · 4★ 15 · 3★ 1 · 2★ 2 · 1★ 5 ## Newest reviews (16 of 110) ### 3/5 — Decent But Recently Problematic *2026-01-29* I have used this app for years on IOS with no issues. But recently it has started crashing to my desktop and won’t allow me to use it unless I remove it from my phone and reinstall the app. Which is why I can’t give it more than a 3 star rating and have to find another app. ### 2/5 — Originally great *2022-02-24* Was a great app but now, adverts aside, is inaccurate. 148cm is not 4’ 8.55.”, it’s 4’10.27”Almost 2” out 🤷🏼‍♂️ ### 4/5 — Missing a couple things but still nice! *2021-01-22* Wish it had watts to lumens for each of the lightbulb types and other electricity related conversions abilities. Worth the $1.39! Very private. Not even anything to turn off in my settings. It’s literally just a units converter that pops up on your screen. There isn't even any settings options in the app. ### 5/5 — I Like it! *2019-07-10* I have a few other conversation apps, but I always end up using this one. It works & I use it often for a lot of different things. It’s never let me down. Accept for having to choose a nickname for writing this review..., several names I wanted were already used. This is nuts. I’m beginning to think there is a flaw in the software. ### 5/5 — Très pratique et précis *2019-03-30* Excellente App ### 5/5 — Great app *2018-11-11, version 1.9* Really useful! ### 2/5 — Trop de pub *2017-12-17* Bien à part la publicité au début ### 5/5 — How have I lived without this *2017-09-20* I truly hate the conversion from metric to Imperial Now how easier can It possibly get. I construction, cook, and always measuring something. Im now a happy camper ### 5/5 — Easy & Precise *2017-08-19* Love this App! It's intuitive, user-friendly and precise. Well done! ### 5/5 — Bravo *2017-07-29* Très complète! ### 5/5 — Très bonne appli demande évolution *2017-07-27* Superbe appli Sauf qu il manque dans la conversion de puissance les horse power (hp) USA avec les chevaux vapeurs européen / français Merci à vous ### 5/5 — Great app *2017-07-05* My go-to app for conversions. Works seamlessly. ### 2/5 — Perfect app that was ruined *2017-07-04* The old version of this was perfect; I used it all the time, daily. Now they've added ads that keep getting in the way, and pop up too frequently. I would pay for an ad-free version, but they don't offer one. And the ads keep getting longer, something that discourages me from using it to quickly double-check a measurement. ### 4/5 — Like it a lot!! *2017-02-10* Really like this app. Wish I could pay for an add free version ### 2/5 — Was great once long ago! *2017-01-27* In the beginning this was just the best conversion app. Now it is beset by adverts which totally ruins its usefulness. ### 5/5 — $.99 version *2016-08-28* To all of you frustrated with the free version of this app, it's time to pay $.99 for the add free version. The free version has been rendered useless by the adds invasion. Out of frustration I deleted the app. I have not seen any adds in the paid version so far. ## Most critical reviews (10 lowest-rated) ### 1/5 — Useless calculator function. Don’t bother. *2019-12-22* This is one of the few converter that offers a built in calculator. Unfortunately, it’s useless if you want to manipulate the value on the right in the calculator. ### 1/5 — If it costs money, it should be complete. *2019-07-24* Seriously... no cubic inches, feet, or yards???? I haven’t checked the other conversions, but what are they missing? Refund my money please ### 1/5 — No memory of last position, one way conversion *2017-06-08* I have the no-ad purchased version. The app has no memory of your last conversion when exiting and reentering the app, so for example if you frequently convert from Sing dollars to Euro you have to find and select the currencies in the list every time to re enter the app. It only converts left to right. There's no reverse conversion. So to go the other way you have to search and select the reverse conversion. The default decimal precision seems a bit much (to the millionth!). Other than those show stopper issues, it does conversions well. ### 1/5 — Full of pop up useless ads *2016-09-24* They're forcing us out of the free version by putting too many annoying pop-up ads from K. Kardashian, Wishbone, etc. constantly. Unable to start conversions until you close the ads. The app has peaked & isn't making money. USELESS & ANNOYING. $.99 version will probably do this soon. ### 1/5 — Totalement inutile pour les monnaies *2015-10-13* La conversion des monnaies nécessite une connexion internet impossible dans de nombreux pays et régions du monde, Ce qui rend cette application parfaitement inutile. Le développeur ferait bien de permettre l'utilisation de son application sans connexion en prenant pour valeurs de change c'elles enregistrées lors de la dernière connexion, quitte à ajouter un repère ou symbole lors d'une telle utilisation. ### 1/5 — Stürzt leider ständig ab *2014-08-10* Leider stürzt das Programm für Umrechnen der Fremdwährung jedesmal ab ;-( ### 1/5 — Leider keine Zeitberechnung. *2011-09-18* Hatte gehofft, dass ich mit Zeiten rechnen kann. Z. B. 3:50:25 also 3std. 50 min 25 sek. + 1std. 20 min 55sek. Es müsste also die Zeit in sek. Umrechnen und diese Addition wieder durch Teilung zurück rechnen. Ebenso sollte die eingegebene Zeit multiplizier- und dividierbar sein. Um z B eine yardstickzahl der gesegelten Zeit in die berechnete Zeit umzuwandeln. ### 1/5 — Unübersichtlich *2010-10-15* Des ist totaler sch***. Total unübersichtlich macht des besser dann gibt's auch mehr Sterne UPDATE ### 1/5 — Unit Conversion - Converter and Calculator, v1.4 *2010-08-23, version 0* Not impressed at all. This specific app should not have seen the light of day - does not work, is not intuitive. ### 1/5 — where can i convert the mony? *2010-07-09, version 0* it has evrything but the mony and it was in discrebtion but it wasnt in the app when i opened it ## Most praised reviews (10 highest-rated) ### 5/5 — Évite de nombreuses recherches Google *2022-12-21* Sur un précédent smartphone j’avais la même appli sans la conversion des devises qui a été maintenant ajoutée. Pour mon utilisation c’est parfait 👌 ### 5/5 — Very simple *2022-09-21* The most reliable go to unit converter ever! Love it! ### 5/5 — Really helpful *2022-02-21* This app is probably the one app I have used the longest. I have used it in so many situations. I use it in my personal life and on the job. ### 5/5 — So useful *2021-05-18* Well, it’s definitely a must have. Ideal for folks that work with US and Imperial and KG measures. Easy to use and fun. ### 5/5 — Love it *2021-04-27* Very intuitive and easy to use. ### 5/5 — Stenne2012 *2021-03-28* Util ### 5/5 — We need an update to the new IOS, please! *2020-12-31* We need an update to the new IOS please ### 5/5 — Convenient *2020-05-17* Handy ### 5/5 — Great App *2020-02-19* Really handy ### 5/5 — Like it *2020-01-19* Supper handy app! --- *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 2026-09-03.*