Top Problems With Calculator Apps in 2026

We analyzed 1,086 negative reviews from the top 5 Calculator apps on the App Store. Here's what users hate most.

1,086
Reviews Analyzed
10
Issues Found
85/100
Opportunity Score

Top User Complaints

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

#1: Intrusive advertisements

High Severity

78% of negative reviews mention this issue.

"Ads popping up while trying to calculate"
"Unusable due to constant ads"

#2: Deceptive subscription practices

High Severity

34% of negative reviews mention this issue.

"Surprised by $5.99 weekly charges"
"Deceptive subscription practices"

#3: Inaccurate trigonometric functions

Medium Severity

12% of negative reviews mention this issue.

"Sine and cosine functions give wrong results"
"Trigonometric calculations are inaccurate"

#4: Slow app startup

Medium Severity

15% of negative reviews mention this issue.

"Takes forever to load"
"Slow to start, frustrating to use"

#5: Missing calculation history

Medium Severity

11% of negative reviews mention this issue.

"Missed having a calculation history"
"No history feature available"

#6: Complex navigation

Medium Severity

10% of negative reviews mention this issue.

"Navigation is confusing"
"Hard to find basic functions"

UX Pain Points

Design and usability issues driving negative reviews.

Ads interrupting calculations

Confusing navigation

Missing calculation history

Slow startup

Want the Full Analysis?

Get the complete Calculator market intelligence report — including missing features, pricing insights, build recommendations, and competitor weaknesses.

View Full Report — $9.99

30-day money-back guarantee

Related App Categories