# Calculator´ — user reviews > 99 indexed App Store user reviews of Calculator´ by Oval Software Oy, rated 4.60/5 from 465 ratings. - Source: https://appshunter.io/ios/app/calculator/id878851717/reviews - App overview in markdown: https://appshunter.io/ios/app/calculator/id878851717.md - Rating breakdown: 5★ 363 · 4★ 62 · 3★ 13 · 2★ 8 · 1★ 19 ## What do users think of Calculator´? Overall sentiment: mixed **Pros** - 👍 Clean and intuitive user interface - 🚀 Fast and efficient performance - 📊 Shows calculation progression like paper tape - 🎨 Customizable appearance and themes - 📱 Works well as iPhone/iPad replacement for default calculator - ⌨️ Good button size and sensitivity - 📜 Date-controlled history feature - 🔧 Advanced features and expression editor - 🎯 Widget availability - 💾 Small app size **Cons** - 💰 Switched to subscription model from free/one-time purchase - 😤 Bait-and-switch pricing strategy - 🔐 Paywall on basic features like clear button - 📺 Ads and pop-ups introduced - ⚠️ Removed features after update - 🐛 Performance issues on newer devices (iPhone 13 Pro Max) - ❌ Restore old purchase not working - 🎯 Confusing pricing tiers and options - 😞 Poor customer service response **Commonly reported bugs** - Buttons below numbers 1, 2, 3 not responding - App crashes when screen fills with numbers - Numbers deleted backwards after full screen - Swipe down converter doesn't work properly on iPad - Pressing equals multiple times adds duplicate results - App becomes unresponsive and requires restart **Most requested features** - Haptic feedback support - Fraction calculation support - RPN mode - iCloud sync for history - Automatic parentheses - Simple keyboard-only option - Better converter UI (swipe functionality) ## Newest reviews (14 of 99) ### 3/5 — Sluggish with iPhone 13 pro max *2021-12-01, version 3.5.39* I used this app with iPhone 10 and it was my favourite calculator app but since upgrade to iPhone 13 pro Max, the app not been working the way it should be. I would not use it till it gets upgrade and will not renew my subscription. After the screen get full with number it starts deleting the number backwords. Please resolve the bug ### 2/5 — 为什么在界面一滑动就跳出来充值界面？ *2021-02-03* 还不能取消，这是什么设计？ **Developer response:** 所有基本功能和一些独特功能都是免费的。 ### 2/5 — Deleted *2020-10-22, version 3.5.35* I really liked the fact I could change the background on the app to a personal photo, but a subscription service for a calculator? Seriously? It’s a calculator.... ### 4/5 — 每次弹注册框出来还不能连网，会自动关闭网络 *2020-09-30* 这是个什么鬼 ### 3/5 — Now a subscription app *2020-09-15, version 3.5.33* This is a very good app and was my go to calculator. Now it’s a subscription app, but it’s cheap enough. However I hate subscriptions. So I ended up switching to their upfront single purchase price calculator to avoid going with a subscription. There are a lot of calculator apps out there but this one is one of the better ones. I do wish it had haptic feedback. I do love the widget that’s available. I do wish there was an option to shrink the equal button and put the division button in the same column as the other operators. **Developer response:** You can actually switch to haptics feedback if you tap and hold the Options button in the top left corner. We’ll look into providing options for the equal/division buttons 👍🏼 Old response: The app still provides the basic calculations for free along with the widget among other things. Plus we provide number of options if 0.5 USD/year subscription is not something you’d be interested in. ### 4/5 — 开始收费了 *2020-09-14* 升级了就不能用了，需要订阅吗 **Developer response:** 您仍然可以免费使用所有基本功能，自定义设置，小部件，手表应用程序以及键盘。 要删除表达式，请使用删除（按住并尝试）按钮而不是C / AC ### 3/5 — 一直卡在算选择什么套餐上，转圈圈 *2020-09-14* 一按等号就卡在选择什么套餐上，一堆的英文，一直转，进也进不去 **Developer response:** 您仍然可以免费使用所有基本功能，自定义设置，小部件，手表应用程序以及键盘。 要删除表达式，请使用删除（按住并尝试）按钮而不是C / AC。 ### 2/5 — Used to be good *2020-09-13, version 3.5.33* I downloaded this app years ago and it was my go to calculator. The other day I went to use it for a quick basic calculation and when I clicked the button the clear I got a pop up that this is a paid feature. The app now has several tiers of subscription and is basically unusable without a subscription. A subscription for a calculator...really? A paid calculator app-ok that I can understand but to pay a monthly fee. No thanks. I was particularly upset because I have been using this app for years. I hate when companies take an existing product and customer and try to force them into paying more for something that that the customer is already used to using. Believe I paid 99 cents when I first downloaded this app but I may be wrong. Go find another calc app that is free or simply a flat fee of $.99 or $4.99 there are literally hundreds of options. I deleted the app and for me went back to apples calc For the basic needs I have. ### 1/5 — Terrible! *2020-09-13, version 3.5.33* I bought this app long time ago. Now they changed to subscription based model. Suddenly i can’t use it anymore. Restore old purchase is not working. And they point me to new calc app which costs 5.99. Terrible! ### 1/5 — Rip off vs other free calculators *2020-09-12, version 3.5.33* After being free for general use suddenly wants to charge every time you press the “clear” key ### 1/5 — Don’t bother....they want money now *2020-09-12, version 3.5.33* Would leave 0 stars if I could. Been using this for years and now you want money? You want me to pay a subscription fee to use a goddamn calculator? Or 8.50 as as one time purchase? I can buy an entire calculator for less than $5. Piss off. ### 1/5 — Was good until they started charging *2020-09-12, version 3.5.33* This app was a simple calculator and was great. You can customize the colors...BUT for some reason they forced users to buy a paid version that looks different for $5.99 or get on a yearly subscription for .$49 or $1.49... it’s a calculator... nothing needs to be updated...this is a money grab in a saturated market so I deleted the app. Plenty of free options or one time $.99 fee. ### 3/5 — 太不方便了！ *2020-09-12* 未知数怎么打出来？设置得太复杂了……想输入个公式要研究好久！ **Developer response:** You can change the X value by tapping the “Hint area” just bellow the top left corner Options and Settings button. If you have any questions please contact us via UserVoice or email from within the app. AppStore Review does not provide us with a good platform to deliver user support directly. ### 1/5 — Now Subscription Plan 👎 *2020-09-11, version 3.5.33* The new pricing strategy is terrible. I’m deleting this app. ## Most critical reviews (10 lowest-rated) ### 1/5 — 别更新 *2021-05-03* 差评，一更新，以前的功能都用不了，查看历史记录都得收费，想钱想疯了？ **Developer response:** 是的，我们太疯狂了，这就是为什么我们每年收取最低（0.15日元）的维护费用-您知道免费的免费😉 ### 1/5 — 不值得 *2020-11-23* 强行收费了. 我只需要基本的计算功能 每次弹窗让买完整版 **Developer response:** 所有基本功能都是免费的。 一些高级功能也是免费的。 弹出窗口可能是意外滑动手势以显示历史记录的结果吗？ ### 1/5 — Require more money again *2020-10-29, version 3.5.35* I brought it and now it requires more money after update. ### 1/5 — WTF *2020-09-22* Ich möchte die Eingabe löschen und muss dafür zahlen? So ein Schrott. Es war mal mein bevorzugter Taschenrechner. Schade. **Developer response:** Nicht mehr so in v3.5.34. Danke! ### 1/5 — 使用一年的计算机突然开始内购 *2020-09-18* 用了一年了突然开始内购，不然基本用不了了，我宁愿用回老版本 **Developer response:** Please update to v3.5.34 ### 1/5 — Constant ads and popups now🚫‼️ *2020-09-16, version 3.5.33* This used to be a great app but now they removed a bunch of features😔⚠️ ### 1/5 — Useless *2020-09-14* To remain free but an obligation to install something else?! No worries... In the end all is calculator. There’re others. After installing it didn’t work anymore... plus, oblige us to install other app to continue using the CALC. Shame on you all. Uninstalling it. **Developer response:** Apologies but contrary to the popular belief, any app on the App Store requires maintenance and we have subscription costs ourselves associated with some of the advanced features of the app. The pricing model is the cheapest available on the App Store and basic functions remain free.. ### 1/5 — Used to be good *2020-09-14, version 3.5.33* Now it’s subscription based even for basic functions ### 1/5 — Seriously? *2020-09-14, version 3.5.33* This is a calculator. Not rocket science. It’s a convenient calculator to be sure but there’s certainly just about zero upkeep involved and now you decide to charge for it, no less an annual fee??? LOL see ya. ### 1/5 — Bait and Switch *2020-09-13, version 3.5.33* Really feel like the old baits and switch and. Get app. Use app. Then change app so you have too pay. I really liked this app and it WAS my go to calculator, now the developers want you too pay a subscription fee, after purchasing and using the app for more than a year. I have found other calculators which I will be using from now on. I wish the developers good luck. ## Most praised reviews (10 highest-rated) ### 5/5 — Math *2026-04-18, version 3.6.3* Good ### 5/5 — Great calculator *2025-02-24, version 3.6.3* A really well made Calculator app that replace the default calculator app on both my iPhone and iPad. Many convenient features, clean UI. Can’t recall any crash in the years I have been using it. ### 5/5 — Indispensable *2023-10-12* Super application, très utile et indispensable. ### 5/5 — Works well for me *2021-12-11* 👌🏾a-0k ### 5/5 — 要充值也要让啊 转圈圈是什么意思，， *2021-02-07* 弹要充值却转圈圈 一直这样😭 ### 5/5 — 之前都能用的怎么现在不能用了？ *2020-09-11* 之前都能用的怎么现在不能用了？怎么需要购买内购才可以用呢？还原单一购买选项结果是失败？ **Developer response:** Pleas contact us via email or UserVoice in the app so we can help you resolve this. ### 5/5 — It’s all that I need *2020-08-10, version 3.5.31* This is the best basic calculator I have found. It functions well and it shows the progression of your work, almost like an old fashioned calculator with a paper readout would do. The buttons are a good size, so not too many “big finger” issues, and they’re sensitive enough to not miss numbers as I input them. ### 5/5 — 功能强大 *2020-02-15* 界面简洁，新手引导做的也很棒！五星好评 ### 5/5 — 好强 *2019-11-28* 完全不会用，但是真的好厉害 ### 5/5 — Best calc ever *2019-09-20, version 3.5.25* Best calc I ever used on iPad. --- *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 2026-08-27.*