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App Imp

Calculator apps.

Ads runs in 9 of the 9 apps here — nobody on this shelf has fixed it.

9 apps · 2,000 reviews held · 961 negative · 2026-08-24 snapshot

72/100 opportunity

5 of 6 factors · not advice
Nobody's fixed it9 of 9 apps100
How far above typical25.7% vs 10.7% typical60
How angryno deep report yet—
People in the market2,600,181 ratings81
Room to enterleader holds 66% of ratings34
Willingness to pay6 of 9 charge · $3.99 entry67

Mostly solved: support. 8 of 8 apps run below the store’s typical rate on it — while 9 of 9 still carry ads complaints.

How this is scored

Weighted mean of the sub-scores, weights re-normalized over whatever is computable (nobody's fixed it 25 · how far above typical 20 · how angry 15 · people in the market 15 · room to enter 15 · willingness to pay 10). Fixed anchors map each count to 0–100: breadth and willingness-to-pay are straight shares; the gap’s heat tops out at 4times the store’s typical rate; anger scores star3 as 0 and star1.5 as 100; reach runs 104 to 107ratings on a log scale; room to enter is one minus the leader’s share of shelf ratings. A factor that cannot be counted is dropped and named — never imputed. The site’s one composite (#115, owner decision 2026-08-15); cited industry benchmarks are never blended in.

5 gaps.

01

Ads — unfixed in 9 of 9 apps

high · 25.7% of this shelf’s 961 negative reviews, against 10.7% typical store-wide.

What they said · 247 reviews
“Horrible — Makes you watch like 10 minutes of advertisement’s every time you open the app before you can access your own pictures. Do not get this!”Calculator# Hide Photos Videos · 1star · Aug 14, 2026
“Calculator with ads — title”Calculator₊ · 1star · Aug 9, 2026
“It’s ok — The free version runs ads so constantly you have to buy the subscription just to be able to view photos. Very annoying, but bought the sub and it’s fine now. Updated to 3 stars because you shouldn’t be forced into buying the sub from the free being so bad. Just make it subscription only”Calculator# Hide Photos Videos · 3star · Aug 5, 2026
How it compares
this shelf
25.7%
247 of 961
store-wide
10.7%
typical
breadth
100%
9 of 9 apps
02

Billing — unfixed in 8 of 9 apps

25.6% of this shelf’s 961 negative reviews, against 32.1% typical store-wide.

What they said · 246 reviews
  • Price judged too high for the value17 of 246
  • Trial converted without clear consent7 of 246
  • Charge the user never authorised4 of 246
“Another subscription app — Nothing special unless you like seeing your bank account drained over time”Calculator₊ · 2star · Aug 9, 2026
“Lame — Zero reason to be charged for a calculator app. Can't even get to the free use of it without subscribing. Uninstalled immediately.”Calculator₊ · 1star · Aug 7, 2026
“It’s ok — The free version runs ads so constantly you have to buy the subscription just to be able to view photos. Very annoying, but bought the sub and it’s fine now. Updated to 3 stars because you shouldn’t be forced into buying the sub from the free being so bad. Just make it subscription only”Calculator# Hide Photos Videos · 3star · Aug 5, 2026
How it compares
this shelf
25.6%
246 of 961
store-wide
32.1%
typical
breadth
89%
8 of 9 apps
03

Accuracy — unfixed in 7 of 9 apps

9.5% of this shelf’s 961 negative reviews, against 11.5% typical store-wide.

What they said · 91 reviews
“Stopped Uploading — The app stopped uploading videos all of a sudden. It will upload pictures but not videos. Not sure what's wrong with it”Calculator# Hide Photos Videos · 3star · Jul 22, 2026
“Useless — No memory. No sub totals. Doesn’t carry decimal points. Keeps total off screen then adds to the next equation”Calculator · 1star · Jul 21, 2026
“Garbage — 100 commercial per minute…”Calculator# Hide Photos Videos · 1star · Jul 18, 2026
How it compares
this shelf
9.5%
91 of 961
store-wide
11.5%
typical
breadth
78%
7 of 9 apps
04

UX — unfixed in 7 of 9 apps

2.4% of this shelf’s 961 negative reviews, against 2.9% typical store-wide.

What they said · 23 reviews
“Lacking Common Conversions — I’d like to see Apple allow the Calculator app to load third party add-on calculator templates. It could be implemented in a similar manner to keyboard or dictionary add-ons. I’d love to be able to quickly switch from Basic or Scientific calculators to a functional template of a Ti-86 or Ti-83, mirroring the button layout and graphing functions. Same goes for other ind”Calculator · 1star · Aug 4, 2026
“DISGUSTING APP — THIS APP WAS HARD TO USE AND WAS DISGUSTING AND ITS UNHEALTHY LIKE YOU IPAD GLOB KIDS IT WAS SO CONFUSING AND I LIKE THE OLD FASHIONED WAY”Calculator₊ · 1star · Aug 3, 2026
“Weird — Kinda weird layout”Calculate84 · 3star · Jun 11, 2026
How it compares
this shelf
2.4%
23 of 961
store-wide
2.9%
typical
breadth
78%
7 of 9 apps
05

Performance — unfixed in 9 of 9 apps

9.4% of this shelf’s 961 negative reviews, against 16.9% typical store-wide.

What they said · 90 reviews
“Lagging past week — I love this app so much. I have a shortcut to it on my phone home screen, have told my friends to download it regardless of if they need a calculator app, etc. I have an average 30+ mins of screen time on this app alone for every calculation I need to do... until this past week. Out of seemingly nowhere, 5ish days ago, the entire app has been extremely slow. Like, type a number”Calculate84 · 2star · Aug 15, 2026
“Was convenient, now slowed — The app was a great convenience when I downloaded it a couple years ago. But lately, the app feedback has been significantly when I’ve tried to type in numbers. It has become more of an inconvenience due to the delay, sometimes lack of response.”Calculate84 · 3star · Aug 13, 2026
“Adds Impeding Utilization on Android — I recommended this app to someone I know who’s currently in a DV situation. She was totally unable to utilize the app due to near constant and misleading ads telling her there are file errors and taking her to the Google play store. In 10 mins she was unable to upload a single photo. I purchased this for myself years ago and I’m not sure if there was a flat”Calculator# Hide Photos Videos · 2star · Jul 30, 2026
How it compares
this shelf
9.4%
90 of 961
store-wide
16.9%
typical
breadth
100%
9 of 9 apps

Is there a market for a new calculator app?

9 apps compete on this shelf, holding 2,000 App Store reviews — and the widest unfixed complaint, ads, runs in 9 of 9 of them at 25.7% of negative reviews against 10.7% typical. Those are counts, not a verdict — the page shows what is unfixed, not whether to build.

What do users complain about most in calculator apps?

1. Ads — in 9 of 9 apps, 25.7% of negative reviews; 2. Billing — in 8 of 9 apps, 25.6% of negative reviews; 3. Accuracy — in 7 of 9 apps, 9.5% of negative reviews; 4. UX — in 7 of 9 apps, 2.4% of negative reviews; 5. Performance — in 9 of 9 apps, 9.4% of negative reviews.

How many calculator app reviews did App Imp count?

2,000 US App Store reviews across 9 apps, 961 of them negative — counted on the 2026-08-24 snapshot, never estimated.

Searched on the App Store.

Apple’s own suggestions for calculator apps terms, in their order.

ai math solver & homework helpcalculatorcalculator for constructioncalculator for iphonerafter calculator app for carpenterscalculator for freecalculator vaultsales tax calculator app for free

Searched, but no app on this shelf says it in its name.

Who’s in it

All 9 apps counted on this shelf · 2026-08-24.

App
Calculator₊1,727,46829%51%5%4%
Calculator‰409,09181%4%8%2%
Basic Calculator+258,09177%5%—5%
Calculator Air: AI Math Solver83,43012%60%7%1%
Calculate8452,41222%28%20%2%
Calculator# Hide Photos Videos28,86718%18%6%—
Calculator with History +24,95614%24%14%4%
Calculator9,7269%7%16%4%
Calculator Lock - Secure Vault6,14010%———

Each cell: that app’s share of its own negative reviews. Bold from 1.15 times the store’s typical rate for that complaint, and only where an app holds 20+ negative reviews. Click a column to sort.

What they charge, and what it costs them

Prices from Apple’s public pages; the share counts payment-mechanics language only.

AppMoney complaints
Calculator Air: AI Math Solver$4.99–$99.99 · 10 tiers9.6% of 154
Calculator₊$0.99–$14.99 · 10 tiers4.6% of 130
Calculate84$2.99–$29.99 · 6 tiers0% of 65
Calculator# Hide Photos Videos$4.99–$4.99 · 2 tiers0% of 210
Calculator with History +$9.99–$9.99 · 1 tiers0% of 51
Calculator Lock - Secure Vault$1.99–$29.99 · 7 tiers0% of 10

Browse the apps behind these counts

Every app we count, with the complaint it runs furthest above the store’s typical rate.

Open the app library
How this is counted

Every number is arithmetic over the reviews we hold, re-counted weekly — nothing modelled, nothing scored. Themes come from a frozen pattern classifier rather than a model reading reviews, so the same review always lands in the same bucket. A shelf rate is pooled across every app here; the store rate is the same count across 12,122 apps. A complaint is only called a gap when at least half the shelf carries it and at least 20 reviews are behind it — a problem concentrated in one app is that app’s bug. This shelf has no full report yet, so the per-app notes and the anger axis are absent rather than estimated.