Prime Cracker vs Find Prime Num
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Prime Cracker
This app helps users explore the fascinating world of prime numbers. It allows you to check if a number is prime, find its factors, and discover nearby primes. You can also analyze ranges of numbers for primes and twin primes.
- Determine primality and factors
- Find prime position
- Explore nearby primes
- Check number ranges for primes
- Identify twin primes
Read full descriptionHide full description
• Determine a number's primality, factors or prime position • Explore nearby prime numbers conveniently • Check ranges of numbers for primes and twin primes
Find Prime Num
Quickly determine if a number is prime and find one of its factors. This app also measures calculation time to help you benchmark your device's processing speed. Share your results and compare performance with others.
- Calculate prime numbers up to 64-bit integers
- Measure processing time for device speed comparison
- Find one factor of a non-prime number
- Share calculation results
- User-friendly interface
Read full descriptionHide full description
Do you want to find out if a number if a prime number? Are you constantly spending hours to calculate if a long number is prime? If the answer is yes for any of these questions, you should download "Find Prime Num" app. "Find Prime Num" allows you to find out if a number is a prime or not. It will also give you a factor of this number. In addition, it will tell you how long it takes for the app to calculate, which indicates how fast your device is. You can use this value to test your device's processing speed against other devices. "Find Prime Num" is an app for you to find out if your number is prime. It can be used on iPhone, iPod Touch and iPad. It is simple, easy to use, and very informative. You can share your results with others as well. Main Features ◉ Calculate prime number up to 64-bit integer ◉ Calculate the processing time, an indicator of the speed of the CPU of your device ◉ Calculate one factor of your number if it isn't a prime ◉ Share your results with others to see whose devices are faster ◉ User-friendly interface
Screenshots
Verdict
Prime Cracker and Find Prime Num both sit at 4.9 stars, but that hides the real split: 100% of Prime Cracker's written reviews are positive against 50% of Find Prime Num's. Prime Cracker also leads on ratings volume (33 vs 1) and device support (5 vs 3). Find Prime Num's advantage is update cadence (every 4 days vs every 2 weeks) and iOS requirement (12.0 vs 15.0). On price, rating, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.9 for Prime Cracker against 5.0 for Find Prime Num. That said, the two scores are not equally well evidenced: Prime Cracker has 33 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 100% of Prime Cracker's written reviews are positive against 50% of Find Prime Num's.
Prime Cracker ships an update every 2 weeks, Find Prime Num every 4 days. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.
| Parameter | Prime Cracker | Find Prime Num |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (33 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 50.0% of reviews |
| Number of ratings | 33 — better | 1 |
| Update frequency | Every 2 weeks | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod, Mac, Apple Watch — better | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Sven Freitag | Duo Pisceses, Inc. |
Customer experience
Prime Cracker
Find Prime Num
In-app purchases
Prime Cracker
No in-app purchases
Find Prime Num
No in-app purchases
Questions
Is Prime Cracker free?
Is Find Prime Num free?
Which has better reviews, Prime Cracker or Find Prime Num?
Do Prime Cracker or Find Prime Num have ads?
Which is updated more often, Prime Cracker or Find Prime Num?
Other comparisons
