Rectangles & Primes vs Math Tools B
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Rectangles & Primes
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Rectangle provides a fun and insightful maths experience for kids aged 6 to 12. They will improve their understanding of number factorization and prime numbers.
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 update cadence: Math Tools B at every 10 days against Rectangles & Primes's every 3 weeks. Math Tools B also leads on iOS requirement (10.0 vs 15.0). On price, ads, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Rectangles & Primes ships an update every 3 weeks, Math Tools B every 10 days. The most recent releases landed on October 2, 2026 and September 30, 2026 respectively.
| Parameter | Rectangles & Primes | Math Tools B |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 weeks | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 10.0 — better |
| Further details — not scored | ||
| Size | 10 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | Johannes Charra | Jaron Wakley |
In-app purchases
Rectangles & Primes
No in-app purchases
Math Tools B
No in-app purchases
Questions
Is Rectangles & Primes free?
Is Math Tools B free?
Do Rectangles & Primes or Math Tools B have ads?
Which is updated more often, Rectangles & Primes or Math Tools B?
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