# Calc Pro - The Top Calculator — user reviews > 197 indexed App Store user reviews of Calc Pro by Panoramic Software Inc., rated 4.70/5 from 358 ratings. - Source: https://appshunter.io/ios/app/calc-pro-the-top-calculator/id438580059/reviews - App overview in markdown: https://appshunter.io/ios/app/calc-pro-the-top-calculator/id438580059.md - Rating breakdown: 5★ 294 · 4★ 42 · 3★ 8 · 2★ 8 · 1★ 6 ## What do users think of Calc Pro? Overall sentiment: positive **Pros** - 🚀 Fast and responsive - 👍 Versatile and feature-rich - 💡 Excellent unit conversion and currency tools - 👍 Clean and intuitive interface - 🚀 Efficient RPN mode - 👍 Comprehensive set of calculators **Cons** - 🐛 Occasional crashes and bugs - 🔋 Slow load times - 👎 Expensive for a calculator app - 🔒 Compatibility issues with newer iOS versions **Commonly reported bugs** - Regression feature not working properly - Unit conversion errors for some measurements - Loan calculator not calculating interest correctly **Most requested features** - Add fraction support - Improve tax calculation accuracy - Implement auto-update for currency rates - Add ability to edit equations - Provide a dedicated iPad version ## Newest reviews (11 of 197) ### 4/5 — Go-To Calculator App *2025-07-19* I have been using this app for awhile and it is my go to app for currency conversions, volume and length calculations. Glad it is still being updated. Kudos. ### 3/5 — No RPN *2025-03-11* Average - most calculators these days are essentially generic. The functions are available for all and if you’re going to charge $7.99 it’s important that you add something unusual and that you keep a running explanation of your functions. I find RPN to be so the I look for that and thought I saw it here. My bad. This is not well produced - it’s “10 functions” are not helpful - it does a lot of stuff but hard to find the list. I’m disappointed that I spent $7.99 as I should have known I could have gotten these functions for free. And I Didn’t get what I wanted which was RPN. Not bad but if you charge these days, it should be great. Thanks ### 2/5 — Português *2021-08-24* A conversão para língua portuguesa é horrível. ### 4/5 — Impossible to Update for Currency Values *2021-02-14* I have enjoyed this app for years, until last week when I couldn’t get the date to reflect the current date. Today I went to the App Store and decided perhaps I needed to purchase a new version of the app .$7.99 vs what I believe was previously Free! Only to receive the exact same notice , “unable to connect” ... while I am connected to the Internet! Wi-Fi on my Apple XR. Now I’d like my Apple charge refunded ! Ever hopeful someone will contact me! precious Auntie ### 4/5 — Was great now not working *2021-01-15* Since updating to the latest version of iOS this app no longer works. ### 4/5 — Good calculator. They *2021-01-06* They refunded my money after I paid and they failed to remove ads. I rebought it and the ads are gone... ### 2/5 — Loan calculator *2020-12-06* The loan calculator part does not work correctly. When trying to determine interest amounts the calculation does not show the results ### 3/5 — iOS14.2にしたら使えなくなりました *2020-11-09* 早く使えるようにして下さい‼️ ### 4/5 — 유용합니다 *2018-05-13* 거의 모든 계산이 가능해서 좋습니다. 다만, 너무 많아서 기능을 익히는데 부담스럽습니다. 사용설명서가 있으면 좋을텐데요 ### 5/5 — Great Multi Calc. *2017-10-01* Love this Calculator. Use it all this time for a variety of projects. Keep improving it maybe add a carpentry calc or other building construction calcs. Thanks GB ### 4/5 — Great app *2017-08-30, version 6.5.0* Find it very useful ## Most critical reviews (10 lowest-rated) ### 1/5 — Waste of money *2021-10-26* I just paid $14.00 for this and it will not even boot, t really can’t afford to throw money away on junk so will certainly not buy from thiz developer again. Please refund ### 1/5 — Broken on iPod Touch 5g *2019-12-22, version 6.6.0* Stuck constantly trying to update. (Can't even delete the app.) Support site doesn't work. ### 1/5 — Два разных calc pro и оба не работают. *2019-08-24* Не запускается после обновления до 6.7, возвращайте назад деньги! До 6.7 прекрасно работало, был отзыв на 5 звёзд. ### 1/5 — iPhone 7, iOS 10,3 *2019-06-26* Обновление - халтура. После установки вылетает!!!! Верните деньги. ### 1/5 — Confused *2018-10-23* I needed a different financial calculator with the n iy pv pmt fv buttons ### 1/5 — RPN problem *2018-09-16* I bought this to avoid the ads on the free version and now the rpn Calc is not working in rpn mode. There is no Enter button. Ugh! ### 1/5 — Not impressed *2018-05-07, version 6.6.0* I had the standard calculator and upgraded to pro to get rid off the ads. Since I have done this I can only view in portrait. I have email tec team but no reply! ### 1/5 — Let down *2018-04-11, version 6.6.0* Not sure exactly what the cut off Mark is, but when adding a long sequence of numbers, hitting the "=" sign causes app to crash, or perhaps restarts itself. 40 minutes of work (two tries) for nothing. Never had this problem with Android apps. Yet another reason why I find iPhones and their apps sub-par and inferior. Two enthusiastic thumbs down. Four if I can include my big toes. ### 1/5 — Très déçu. *2018-01-09* Pas d’affichage du calcul en cours, pas d’affichage sur plusieurs lignes, en scientifique pas d’affichage des degrés minutes secondes pendant le calcul... Pas de favoris pour les conversions. Et pour finir plantage de mon iPhone X! J’ai testé les 3 applis je ne sais donc pas laquelle en est la cause. Donc je ne m’en sers plus jusqu’à voir une mise à jour. Ça fait cher! Ouf il a redémarré après avoir forcé un redémarrage. ### 1/5 — Waste of money. Junk app *2016-12-31, version 6.5.0* Graphical interface is good. App crashes with errors many times. Over rated app. One has to buy iPad and iPhone app separately. ## Most praised reviews (10 highest-rated) ### 5/5 — R P N *2024-09-08, version 6.9.0* I learned how to use RPN on HP calculators. It’s the best wayvto fo math in my opinion. ### 5/5 — Merci et bravo !! *2023-03-20* Quelle joie de voir que les développeurs continuent de supporter ce que j'estime comme étant la meilleure application de calcul que je connaisse...! ### 5/5 — Wonder full calculator *2023-01-31* Been using this app since the ice age and can’t live without it. Best I have used! ### 5/5 — Bon appli *2021-02-13* Bonjour, Problème sur votre application. Dès qu’on appuie sur une touche +*- tout s’efface donc appli inutilisable pour le moment. ### 5/5 — App no longer works on iPhone *2019-05-28* 6s. It opens and then closes. Useless! ### 5/5 — The best calculator app *2019-05-17* I use finance, scientific, and base conversion the most and occasionally the plotter. Everything in one app! ### 5/5 — Best Calculator/Unit Converter EVER. *2019-03-13* Love it... ### 5/5 — Виталий Яценко, пользователь *2018-07-29* Только начал пользоваться Вашей чудесным виртуальным калькулятором, а уже в восторге! Прекрасная программа!!! Сразу же посчитал именно то, что мне было нужно. Сравниваю с неуклюжими российскими приложениями, и мне становится стыдно за те программы, которые, например, предлагают банкам для различных финансовых расчетов. Универсальность и многоцелевой назначение Вашей же разработки, а также дружественный интерфейс говорят о том, что разработчик Вашей программы работают на пользователя, а не на узкого или продвинутого специалиста. Как бы мне хотелось, чтобы Вы разработали ещё rpn-калькулятор с удобным большими экраном, позволяющим обозревать содержимое всех четырёх ячеек стековой памяти: x, y, z, t. ### 5/5 — Versatile *2018-07-22* Easy to use, good mix of conversations. One missing conversion that would be useful is between DMS and D.D for geographic data (I don’t know why apps even use DMS, but they do). ### 5/5 — Great App *2018-04-25, version 6.6.0* Been using for years and is still the best. --- *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 2026-08-28.*