The Best Calculator User Reviews

Customer Experience

Positive experience68.2% of reviews
Neutral5.4% of reviews
Negative experience26.4% of reviews

~ Based on 314 written reviews from the US App Store.

What users say

Is The Best Calculator Safe?

The Best Calculator - Calc Pro appears safe based on user ratings. AppsHunter Safety Score for The Best Calculator is 92/100.

This assessment is based on 4,710 user ratings, with an App Store average of 4.6/5.

Safety Analysis

91.0% of ratings point to a safe experience
3.9% of ratings suggest some concerns
5.1% of ratings point to a risky experience

~ Based on 4,710 App Store ratings for The Best Calculator.

Is The Best Calculator Legit?

The Best Calculator - Calc Pro appears to be a legitimate app. AppsHunter Legitimacy Score for The Best Calculator is 100/100.

Based on 100 of 100 points across 7 verification signals from App Store and developer data.

Top reviews

Can’t Close Ads So Practically Useless

Doesn’t matter how good it is because after a few calculations an unclosable unwanted ad pops up covering the entire iPhone screen and remains there for an eternity trying to force you to click on it. Meanwhile you can’t use the calculator so don’t bother. This is just a clickbait machine!

Great calculator

TY enjoy. Using it

Currency Exchange

May 12 2026

I keep sending feed back about this but it’s still the same.

It’s so annoying that the app on currency keeps defaulting to

USD
GBP

It should stay on last used or there should be an option to choose my defaults.
I hate the fact that I have to constantly (every time) I use the app select my frequently used currency
Because it keeps defaulting to

USD
GBP

PLEASE FIX IT



I can’t stand the fact that I have to keep selecting the currency I’m trying to convert to every single time.
It never keeps the last used or (short cut it should have for most frequently used).
In short… I have to always scroll to find my most used currency conversions.
I would rate this 5 out of 5 but the annoyance of the currency which I use mostly, is quite frustrating.
THE app is honestly quite amazing. I use the other aspects of it but I mostly use the currency conversion


Update Dec 28 2025
Last used currency conversion still not dealt with on this app. I would rate it higher, but I reviewed this sometime ago and no update has been done on that aspect for frequently used currency conversions. That’s why it gets a two out of five.
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Where Are The Cooking Conversions

I used to use this calculator app for cooking conversions. I think there was even a labeled cooking section under the calculator types. I don't see it anymore.

Currency Exchange

I can’t stand the fact that I have to keep selecting the currency I’m trying to convert to every single time.
It never keeps the last used or (short cut it should have for most frequently used).
In short… I have to always scroll to find my most used currency conversions.
I would rate this 5 out of 5 but the annoyance of the currency which I use mostly, is quite frustrating.
THE app is honestly quite amazing. I use the other aspects of it but I mostly use the currency conversion


Update Dec 28 2025
Last used currency conversion still not dealt with on this app. I would rate it higher, but I reviewed this sometime ago and no update has been done on that aspect for frequently used currency conversions. That’s why it gets a two out of five.
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кПа

Добавьте пожалуйста в конвертер давления единицу кПа, очень не хватает.

Прекрасно!

Обратная польская система счета реализована прекрасно! Кто понимает, будет восхищение. При этом куча других возможностей. И конвертация, и обычный калькулятор. Короче, много чего попробовал. Это приложение прекрасно отшлифовано для любого пользователя. Вплоть до настойки расцветки. Вот же заморочился создатель! Респект и уважуха!
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Great !

Would be nice if there was a monthly add on to compound interest

Excellent

Good

Calculatrice

Très satisfait mais on devrait pour lire ce qu’on enregistre. Exemple si l’on additionne 28+33 on ne voit pas ce que l’on écrit, la réponse est visible •

No Amps?

I got the free version to try it out, but it does't have Amperes. I was trying to calculate if a power-supply would work on another device. Uninstalling for now. May try it later.

Currency Exchange

I can’t stand the fact that I have to keep selecting the currency I’m trying to convert to every single time.
It never keeps the last used or (short cut it should have for most frequently used).
In short… I have to always scroll to find my most used currency conversions.
I would rate this 5 out of 5 but the annoyance of the currency which I use mostly, is quite frustrating.
THE app is honestly quite amazing. I use the other aspects of it but I mostly use the currency conversion
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Can’t Close Ads

This is a great calculator BUT unfortunately I can’t use it half the time when I want to because an ad will appear upon opening and the x mark to close the ad won’t work because it’s on top of the time or battery icon on my phone. So unless I capitulate to being forced to open an unwanted ad I just have to wait a ridiculously long time for the ad to disappear or come back later and hope I get the calculator screen instead of an ad. Very frustrating.
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Bought in 2012 now we ant me to pay again

The fact that I bought this app back in 2012 and the company wants to charge me again for an ad free version make me feel short changed.

The best calculator

I have used this for several years on both my iPad and iPhone. It is far and away the best.

The End of My Search for Calc Apps

I use pi a lot and it is nicely placed on the keyboard. I prefer rpn. Even the appearance is aesthetically appealing.

It’s COOL

Yay

Good calculator

The math works fine. I can't get it to convert any units of weight except grams and kilograms.

メモリーキーが良い

メモリーキーが使いやすいですね。MSキーが嬉しい。
更に欲を言えば使用頻度の高いMS、MRを右に配置し、左からM+,M-,MS,MRの順が良かったかな。それでも★5に変わりはありません。

Paid for App, still stuck with Ads!!

I like the app, but after paying for the app I still get the ads!!

It states if you purchase, the ads go away! Didn’t work out that way.

No one has offered a fix and I’m still out $8.

I cannot use he app without being interrupted with an add. Most frustrating.