Pi Brain vs Numberus Prime
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pi Brain
Test and improve your ability to memorize digits of pi. Challenge yourself and friends to see who can recall the most numbers. This app serves as a fun learning tool for all ages to enhance memory retention.
- Memorize pi digits
- Test memory recall
- Score saving
- Sort scores by date, name, or score
- Friend contests
- Learning tool
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How many digits of pi can you remember? Since pi is an irrational number, the digits never end or repeat. You will probably never have to use more than a dozen digits in any calculation, so why learn the digits of pi? For some people this is a challenge. The Guinness record for remembered digits is 67,890 digits. With this program you will have the opportunity to test your memory, and learn a universal number. Have contests with your friends and family. This is a great learning tool for all ages. You be surprised how much you can remember with a little practice. The option to save the score will only appear if you do not make more than one mistake and do not use the hint or switch to the learn mode. Scores can be sorted by date, name, or score. Use this list to verify your retention over long periods.
Numberus Prime
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With Numberus Prime it is easy to learn prime numbers by going form 2 and up. If you need to check if a number is prime it is quick and easy with Numberus Prime.
Screenshots
Verdict
The clearest difference is price: Pi Brain at Free against Numberus Prime's $2.99. Pi Brain also leads on iOS requirement (6.0 vs 13.4). On 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
Pi Brain is free to download; Numberus Prime costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Pi Brain | Numberus Prime |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 3.7 (9 ratings) — better | — |
| Positive reviews | 84.4% of reviews | — |
| Number of ratings | 9 — better | — |
| Update frequency | Every 5 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 6.0 — better | 13.4 |
| Further details — not scored | ||
| Size | 3 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Henry Chan | Barcelona Code School |
Bugs and requests
Pi Brain
Reported bugs
8 issues- Screen 'jumps' past ~100 digits
- Score history deleted on update
- Keyboard pops up and blocks buttons
- Cannot save scores
- App shuts down without saving score
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- Latest update does not work
- Frustrating bugs with saving/resetting
- Blocks what row you are on after 40 digits
Requested features
10 requests- Allow starting from any digit
- Option to not count '3' in row divisions
- Add a clear button on test page
- Practice mode for digits already mastered
- Levels based on digits learned
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- Leaderboard for competitive play
- Ability to turn off sound
- Graphics makeover
- Option to save score at every mistake
- Option to reset without closing app
Numberus Prime
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Pi Brain
No in-app purchases
Numberus Prime
No in-app purchases
Questions
Is Pi Brain free?
Is Numberus Prime free?
Do Pi Brain or Numberus Prime have ads?
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