Comparison

PrimeCalc vs Divisors

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

PrimeCalc

Features
Read full description

--- PrimeCalc feature --- ■ Normal arithmetic operation (×, /, +, -) is available. ■ prime: integer calculation (Division remainder ÷, prime factorization p) can be done. (You can also exponentiate.) ■ auto: Automatic calculation, memory storage, history recording is possible. ■ global: Digit display of countries around the world is possible. (千、万、億、兆、京、垓、・・・) ■ iPhone / iPad is available. Free. We are displaying advertisements. Caution) In case of large number, calculation error etc. may occur. Please use it together with other calculator. If you have comments, questions, etc., please email or bulletin board. http: //www.eonet.ne.jp/~treechart/

About

Divisors

Read full description

This app can tell you if a number between 0 and 20000 is prime or not. It can also determine all divisors of any number less than 10000000. Fancy a game? Then you can try the quiz and collect points. Siri Shortcuts are also supported: You can also use your shortcuts to check whether your number is a prime number or not. Another shortcut can give you all the prime numbers from 0 to your entered number in a list. A shortcut can be used to determine all divisors of any number less than 100000, so the shortcut doesn't take too long.

Screenshots

PrimeCalc1 screens
Divisors4 screens

Verdict

The call

The clearest difference is ads: Divisors at none against PrimeCalc's shown. Divisors also leads on update cadence (weekly vs every 5 weeks). PrimeCalc's advantage is iOS requirement (12.0 vs 16.0). On price, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

PrimeCalc ships an update every 5 weeks, Divisors weekly. The most recent releases landed on September 10, 2026 and September 20, 2026 respectively.

Scorecard3 real differences · 3 level
PrimeCalc versus Divisors: the parameters behind the verdict, then further details
ParameterPrimeCalcDivisors
PriceFreeFree
Update frequencyEvery 5 weeksWeekly — better
AdsYesNo — better
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, Apple Watch
Requires iOS12.0 — better16.0
Further details — not scored
Size12 MB7 MB
Age rating4+4+
DeveloperYutaka NakaoDORU SULAR

In-app purchases

None

PrimeCalc

No in-app purchases

None

Divisors

No in-app purchases

Questions

Is PrimeCalc free?
PrimeCalc is free to download, with no in-app purchases.
Is Divisors free?
Divisors is free to download, with no in-app purchases.
Do PrimeCalc or Divisors have ads?
PrimeCalc shows ads; Divisors does not.
Which is updated more often, PrimeCalc or Divisors?
PrimeCalc ships an update every 5 weeks, and Divisors weekly. Most recently, PrimeCalc was updated on September 10, 2026 and Divisors on September 20, 2026.

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