Prime Factors vs Math Tools B
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Prime Factors
Explore numbers up to one trillion, with primes clearly marked. Tap any number to reveal its prime factors. Easily navigate to specific numbers using the search function and adjust the display with pinch-to-zoom gestures.
- View numbers up to 1 trillion
- Prime numbers highlighted
- Tap for prime factors
- Search for specific numbers
- Pinch and zoom display
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View all numbers from 1 to 1,000,000,000,000. Prime numbers shown with a red circle. Tap a number to see its Prime Factors. Jump directly to a number with the search field. • Prime Numbers are marked with a red circle • Prime Factors can be viewed by tapping on a number • Pinch and Zoom to change the number of columns
Math Tools B
This app helps users understand mathematical concepts and perform various numerical tasks. It offers features like factoring, prime factorization, fraction simplification, and random number generation, all computed locally for speed.
- Factoring
- Prime Factorization
- Greatest Common Divisor
- Decimal to Fraction Conversion
- Fraction Simplification
- Fraction Arithmetic
- Random Number Generation
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Understand math and numbers better, whether it be for school or any other purpose. This app can help you with many numerical tasks including: • Factoring • Prime Factorization • Greatest common divisor • Finding prime numbers • Conversion of a decimal to a fraction • Simplification of Fractions • Fraction Arithmetic • Random Number Generation You can expect speed, some of the fastest known algorithms are used in the calculations and all of the operations are computed on your physical device. This takes off the time that would otherwise be used to communicate with servers through the internet. The one exception to this is the nth prime page which contacts a server to be able to quickly give you up to nearly the 10 trillionth prime number in just seconds.
Screenshots
Verdict
The clearest difference is price: Math Tools B at Free against Prime Factors's $0.99. Math Tools B also leads on rating (5.0 vs 3.9) and update cadence (every 10 days vs every 21 months). Prime Factors's advantage is ratings volume (24 vs 1). On ads, in-app purchases, monetization model 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
Math Tools B is free to download; Prime Factors costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Math Tools B holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: Prime Factors has 24 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 79% of Prime Factors's written reviews are positive against 100% of Math Tools B's.
Prime Factors ships an update every 21 months, Math Tools B every 10 days. The most recent releases landed on October 18, 2026 and October 16, 2026 respectively.
| Parameter | Prime Factors | Math Tools B |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 3.9 (24 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 78.6% of reviews | 100.0% of reviews — better |
| Number of ratings | 24 — better | 1 |
| Update frequency | Every 21 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 10.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | Paul Hangas | Jaron Wakley |
Customer experience
Prime Factors
Math Tools B
In-app purchases
Prime Factors
No in-app purchases
Math Tools B
No in-app purchases
Questions
Is Prime Factors free?
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Which has better reviews, Prime Factors or Math Tools B?
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