We analyzed 88 negative reviews from the top 5 Pet Calculator apps on the App Store. Here's what users hate most.
Ranked by frequency — how often each complaint appears in negative reviews.
18% of negative reviews mention this issue.
"The layout is broken on iPad, some of the buttons are at random places, that's been going on for at least a few months."
"Using iPhone in landscape view, keys are scattered; completely unusable - keys are on top of each other"
15% of negative reviews mention this issue.
"The app is well written and works well but its biggest failure is the lack of a manual. Surely for $10 one could at least expect a guide or manual to explain how to use all the functionality of the app."
"Major learning curve to use this app. Want to use a combination function with x and y inputs? Good luck finding out how to enter the variables! The manual is useless and there's nothing on google or YouTube."
12% of negative reviews mention this issue.
"I bought PCalc only to discover that some features are still locked behind a paywall, which the developers call 'tip jar'. I paid a second time, but after having to reinstall my iOS devices, I discovered that there's no restore purchases button"
"I love this app and how customizable it is. It has all the functions you need. The one problem I have is that even though you pay 10 dollars for the app you still have to give to the tip jar to unlock all the app icons."
14% of negative reviews mention this issue.
"Used to be good and still works well once it finally loads, but now it loads so slow while you watch the 42 splash screen that it is frustrating."
"I've been using this app for years. It's always been really good. I noticed it lagging on my iPad Pro 2020 and now it's lagging and freezing up on my iPhone 12 Pro Max."
11% of negative reviews mention this issue.
"Tried the purchased version. App doesn't seem to be able to handle parenthesis very well. To be honest it doesn't handle them at all."
"You can't use parentheses yourself; it auto-adds them in the ticker tape, and not very clearly."
9% of negative reviews mention this issue.
"PCalc is a good app but if it is going to provide number base operations (hex, octal, decimal, binary) then it needs to add 64 bit support. Even cell phones are 64 bit."
"I used to use and enjoy this app but I'm removing it now because it doesn't allow 64-bit calculations in hex (at least). It is limited to 48-bit hex — not sufficient for my needs."
Design and usability issues driving negative reviews.
Users accidentally switch calculator modes (programmer mode, binary/hex modes) through unintended touches, with no clear way to return to normal decimal mode
"This time it switched to programmer mode, only binary, octal and hexadecimal — no obvious option to get back to decimal. Modes switch by accidental touches such as while in a pocket."
When users switch to other apps to collect figures, the calculator clears the register, losing their work
"If I place the calculator in the background to collect figures, the calculator clears the register.. Argg"
Conversion features are buried and not easily accessible, making the app slower than alternatives like Google voice search
"Conversions are poorly designed; can't get to them easily. I could dictate to Google for a faster conversion. Need to keep my HP 19BII handy."
The tape view adds characters beyond what was typed, replacing user input with different notation that causes confusion
"This app has a lot of options, which is nice. However, features like the tape view are really cluttered and add characters beyond what was was typed or requested. For instance, if you type 30^2, it will keep that input, but it will replace the ^2 with something else"
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