Top Problems With Income Calculator Apps in 2026

We analyzed 24 negative reviews from the top 5 Income Calculator apps on the App Store. Here's what users hate most.

24
Reviews Analyzed
10
Issues Found
78/100
Opportunity Score

Top User Complaints

Ranked by frequency — how often each complaint appears in negative reviews.

#1: Incorrect calculations and results

High Severity

29% of negative reviews mention this issue.

"It will NOT do the calculations correctly! I do the problem on my real calculator and then side by side with this app, and the app is wrong."
"the instructors calculations are mostly very different from the ones provided with this calculator, even when i follow the exact key strokes"

#2: Poor or missing documentation and help

High Severity

25% of negative reviews mention this issue.

"No user manual. Embedded YouTube videos had no sound. Help function is limited. No response to emails for assistance."
"This app uses micro transactions and is absolute garbage. No help and no contact information for assistance."

#3: App crashes and technical bugs

High Severity

21% of negative reviews mention this issue.

"I downloaded this and one the very first attempt to calculate it crashed. It crashes everytime and has never worked"
"Wouldn't download and when it did nothing worked. Don't do it"

#4: Not matching physical HP 10BII calculator behavior

High Severity

17% of negative reviews mention this issue.

"I wanted to hit the same keystrokes on this calculator as I do on my real calculator. That doesn't work."
"I bought this app to use in place of my hp 10BII I need to use for an exam - I left the regular one at home thousands of miles away and couldn't find a replacement abroad - but it is not similar to the regular hp."

#5: Pricing and monetization issues

Medium Severity

17% of negative reviews mention this issue.

"I waited 3 months for an update to fix some bugs I reported. Now you update with a few extra easy calculations and you charge an additional $.99! What was the original $10 bucks for?"
"Why do you charge for an update? It's not a significant change from the original version."

#6: Poor UI/UX design

Medium Severity

13% of negative reviews mention this issue.

"The UI of this app is too crammed together. Hard to find the function I was looking for."
"Also the app stretches in slide out mode on iPad Pro making for a ridiculously stretched and truncated ux."

UX Pain Points

Design and usability issues driving negative reviews.

Unexpected dialog boxes interrupting calculations

Users trying to input simple values are interrupted by dialog boxes asking for additional inputs they don't want to provide

"I wanted to hit the same keystrokes on this calculator as I do on my real calculator. That doesn't work. It keeps open up dialog boxes that have more questions than the single input I was looking to put in."

Number formatting issues (decimal/comma confusion)

The app switches decimal points and commas in number display, causing confusion and incorrect inputs

"I am using three decimal places. No matter what, the comma and the decimal places are switched. For example, if I type in 2,495.16, it actually displays 2.495,16. Every single number is like this. Even 2+3=5,000."

Missing or misplaced critical functions

Key calculator functions that users expect are either missing entirely or difficult to locate in the interface

"First problem and it doesn't calculate. Watched video and interesting enough the tab to use wasn't present."

iPad optimization issues

The app doesn't properly adapt to iPad screen sizes, resulting in stretched and truncated display

"Also the app stretches in slide out mode on iPad Pro making for a ridiculously stretched and truncated ux."

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