# All in One Calculator — user reviews > 32 indexed App Store user reviews of All in One Calculator by Ramon Rivas, rated 4.66/5 from 183 ratings. - Source: https://appshunter.io/ios/app/all-in-one-calculator/id664569132/reviews - App overview in markdown: https://appshunter.io/ios/app/all-in-one-calculator/id664569132.md - Rating breakdown: 5★ 147 · 4★ 23 · 3★ 5 · 2★ 2 · 1★ 6 ## Newest reviews (14 of 32) ### 5/5 — Copy and paste don’t work *2020-11-30* I tap the answer area and it gives a “copied from Google” message, but the number stays “0”. If it’s more complicated than that, I can’t find documentation that says so. Edit: Thanks Ramon. Double-tap works great. **Developer response:** Hi, sorry for the late reply. “Copied from Google” isn’t coming from the calculator. The version you’re using is a few months old but it should still work. Double tap on the answer area and you should see Apple’s common copy/paste feature. You can also download the latest version and get more features with a long press in the answer area. If you can help me identify a problem it should be corrected within days. You can email me directly via the email feature in Info. Apple doesn’t notify developers of reviews so I check them a couple of times a month; thus, the tardy reply. The app is free but it’s meant to be a tool so any issue is taken very seriously. Thanks! Ramon. ### 5/5 — AIO rocks *2020-11-22* This calculator truly is a one stop shop for all my calculating needs. Though it offers so many complex functions, the interface is user friendly and easy to work with. I especially love that I can record my answers for later use. 2020 was a crappy year so it’s great to have a straight forward high functioning reliable calculator. ### 5/5 — Excellent Free Calculator *2020-08-02, version 9.0.0* This is an excellent Free Calculator, also free of Ads. ### 5/5 — Great RPN calculator *2020-06-26* I was looking specifically for a RPN calculator that also has unit conversions. I use these functions daily. I downloaded and tried many calculators but something was always not right with them. Then I found this app, it works great! Absolutely the best I have used. And to make it even better there was a small annoyance I contacted the developer about. He agreed to fix it and the fix was in the next release. Just wow! Thanks for making this app available. ### 5/5 — Bueno *2019-09-08, version 8.0.9* Bueno ### 5/5 — Best iPhone calculator app ! *2019-07-09* Wow this app is amazing.. great for history of calculations.. sharing calculations.. and also converts units of measurements pretty easy.. speaking of converting units of measurement.. you should check out Converter app from this same developer ⭐️⭐️⭐️⭐️⭐️ ### 5/5 — Awesome! *2019-05-02* Love this calculator! Very dependable & versatile! ### 5/5 — Goodbage *2019-02-28, version 7.9.10* At first it was a bit garbage and then it is good ### 5/5 — Deserves a look! *2018-05-02* This calculator app deserves a closer look. It is packed with features and is free! ### 5/5 — X^Y or Y^X *2017-12-27* Great App. Thanks for your quick response. **Developer response:** Hi Joe, you're absolutely correct! I made the mistake of using X^Y in RPN when it should be Y^X. A v7.4.2 will be out as soon as Apple gets back from their Holiday break. Thanks for taking the time to provide a review and to point out this issue. ### 5/5 — HotColombian *2017-12-15* Nice job! I love how I can change the layout of numerical keypad. And the unit conversion feature. ### 5/5 — First review! *2017-07-27* This app makes everyday calculations easy. I recommended all my friends and co workers to download this AIO calculator. Thanks Ramon for spending time to help us. ### 5/5 — Awesome app *2017-01-21* First calculator app that is easy to understand and use ### 5/5 — Must have! *2016-11-20* Love it! ## Most critical reviews (10 lowest-rated) ### 1/5 — Constantly nags to login to iPhone account *2022-04-08* I'd give this at least 4 stats if it wasn't for all the nagging about logging in to my iPhone account. Every time I start up the app it nags. I have no intention of ever logging in to satisfy this app as the os no legit reason to needed such a thing for a calculator. **Developer response:** OK. I looked into this and the app does indeed prompt you to sign into iCloud whenever the app is re-started. Apps usually go into background and are not re-started but, of course, they can be re-started at will. So, in most cases, the instances of the prompt should be very few (and not at all if you are signed into iCloud). Nevertheless, I agree that it's better to not repeat the prompt. A new version is now available (10.6.4) that will only prompt once. I appreciate that you took the time to report this and hope you give the app another try. ### 1/5 — Annoying to use *2021-02-17* On my iPad Pro this app ‘blinks’ every time I enter a number and two taps of the enter key are required to put a number in the stack. Most of the time the keypad is unresponsive to entering numbers (as opposed to the immediate and positive keystrokes with which I am typing this review). Lastly, trying to enter an exponent, such as 10 E-6 using the y^x function yields 0. **Developer response:** Sorry to hear about your poor experience. I take problems very seriously and promise to look into it. Something must be going on because I use it on my iPad daily and what you describe would make it unusable. Can you please provide a bit more details: iOS device and iOS version. Feel free to email me directly at iosapplicationhelp@gmail.com. ### 1/5 — Bugs *2020-04-06* Too many errors and miscalculations to make it useful. Obviously it requires reprogramming and an update. **Developer response:** Hey, how's it going? Somehow I missed seeing your review. Sorry! I know it's been 6 months but I take problems very seriously and would like to know what kind of errors and miscalculations you were experiencing. If you remember anything please let me know. Thanks! ### 1/5 — Deleted app within 3 min of using! *2014-04-11, version 1.1.0* Calculator is back to front rotation does not work to correct it. Used to using normal calculators that run in sync, couldn't use or get along with this one. ### 2/5 — (Re) Unacceptable *2021-02-27, version 9.2.8* Just try to calculate 68.4 / 15... This can be a source of many problems... And yes I used the dividing operator not the slash... ### 4/5 — really great app *2024-07-28, version 11.3.4* power-one changed its ui and wanted monthly fee's after I bought premium. So luckily found this app. Wish I could pay a donation for it is very professional ### 4/5 — All in one calculator *2018-05-26, version 7.6.1* It’s a pity that imperial measurements are only partly covered. Eg us gallons are not representative of large parts of the world. ### 5/5 — Advanced Features *2025-10-05, version 12.1.3* It’s great. A Comprehensive conversion tables for many different units of measurement. Custom decimal placing limits. 3 types of calculators. Has ability to count/calculate in Binary, Hex, Octo, Deci Code. Can use logic formulas, NAND/AND ETC.. Overall - many features. From school work to mapping, electrical, the trades, currency, physics, computer data it’s got quite a bit to help convert units, and calculate values. Recommended for those who enjoy in depth learning, designing/engineering/programming/technical troubleshooting. Information beyond your typical calculator. I have emailed the app owner for an electrical circuit calculator/chart for AC/DC circuits. In hopes they can find a way to make that happen. Get it if you’re into getting a good calculator app! ### 5/5 — Excellent Free Calculator *2024-04-09* This is an excellent Free Calculator, also free of Ads. ### 5/5 — Super functional *2024-02-10, version 11.3.1* Excellent free app a ton of functionality. I got it mainly for the programmer mode and the only thing missing that I'd have liked to see is the ability to work with signed integers, with the option to select 16, 32 or 64. Many thanks to the developer! ## Most praised reviews (7 highest-rated) ### 5/5 — Fantastic!!! *2023-01-13, version 11.1.2* I’ve been wanting & looking for a calculator app for my iPad for a very long time. This is brilliant! It has all the functions you could possibly ask for & then some. It is particularly useful in class when students are doing calculator work. It is ad free so no issues about children being exposed to inappropriate content. I hope they keep it that way forever! Cannot thank the developers enough on what a fantastic app you’ve created. My only constructive feedback would be: please don’t overload it with features as it will become too overwhelming & complex to use. It is already quite scientific. Thanks! ### 5/5 — Exactly what I have been looking for! *2022-08-16* I have been searching for a programming calculator for a while and have gone through quite a few apps before finding this one. It does everything I have been looking for that other apps lack. Being able to look back on calculator history as well as comment on operations is a feature I didn’t know I needed, but has come in use multiple times. The unit conversion has more units than I have seen in any other app and shows all units converted rather than having to pick a 1:1, which is very handy for quick comparisons. The developers are also very helpful and quick to respond. ### 5/5 — Wow! *2022-01-20* Super calculator full of nice features! ### 5/5 — An amazing app! *2021-12-23* It combines all the different calculators which makes it really useful. ### 5/5 — Programmer Analyst *2021-11-15, version 10.1.4* One of the greatest calculators so far. Everything you wanted to have in a calculator. ### 5/5 — RegularFan *2021-05-17* Wow! This is a really nice app. Lots a of features that are available when needed and are out of the way when they aren’t needed. Navigation via sidebar is super cool! ### 5/5 — Back to 5*! *2021-01-18, version 9.2.7* Further update, 18 01 2021: improvements have put this back to where it belongs as a fully fledged five star app. Thankyou, Ramon! Previous review is below… ——— Bug not fixed[Update of 25th April 2020 is below line at bottom] Previous review: A great calculator. I've been using it for years and previously rated it with five stars. However, the recent update has a strange problem… Using RPN mode, once the stack contains a value in each of the X,Y,Z,T,4,5 registries, further keypad entries (which bump the stack to 6,7 etc.) do not show on screen! Through trial and error, I have discovered that scrolling up brings them into view - and so does swiping left on the function buttons. But this is troublesome and prone to error when one cannot see what is being typed. Please fix it and I'll update this review and my (hopefully temporary) rating of it! - But for now, my frustration has led to its deletion. [iPad Air: IOS 12.4.5] ——— I downloaded this great calculator again only to be disappointed that the problem described above has not been addressed. What a shame. I'll wait for the next update to see if that fixes it. Cheers! --- *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 2026-07-22.*