Pi

Pi

100,000 - 500,000 downloads

Pros
  • Ease of use
  • Different Pi calculations levels
  • Online performance ranking
Cons
  • Only CPU benchmark tool
  • Needs rankings for all calculation levels
  • Design
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Expert's Review
6.7
Worthy

"'P' as in Performance"

Reviewed by / Oct 10, 2013

Pi is a benchmark tool for Android

Calling Pi digits is n standard computation/benchmark technique for measuring computers performance. It's true that there are well-known benchmark apps for mobile devices out there. However, most of them are under suspicion of favoring one or the other manufacturer. 'Pi' app knows how to make it more simple and reliable: by calculating Pi digits, from 1,000 to 10 millions digits, and count how long it takes to your mobile device to calculate them.

Obviously, the premise is the faster it calculates Pi digits, the better the mobile device is. Well, there are lot of parameters here that aren't taken into account tough: GPU, built materials, screen resolution, sound quality, etc. This test is a restricted benchmark for CPU performance. However, it's easy to understand and carry out. Perfect to show it to your friends and challenge them to beat your records.

You can easily view and share your results with your friends in one click and check how your device performs compared to other devices (only for 10M digits calculation).

Developer's original description available here
Fastest Pi(π) computation/benchmark program on Android.

Features:
- Best Pi algorithm in the world.
- Parallel computing. Fully utilize every CORE of modern Android CPU.
- Low memory usage. 10 million digits can be reached on very low-end phone.
- Armv7 neon support. Turn on hardware vector speed up.
- View or share the results with your friends with one click.

Algorithm:
- Optimized Parallel Chudnosky Algorithm

This program can benchmark your phone's performance perfectly. Show this to your friends about how super fast your new phone is!

Results (10 million digits):
- Galaxy S4 33.9s (at max-freq)
- Galaxy Note II 41.4s
- Galaxy S3 46.2s
- Galaxy Nexus 152.9s
- HTC Desire S 264.1s
- Post your results in review

Recently changed in this version

Pi 1.2:
- New ranking page to see how fast of the device
- Rotation fixed to no-sensor
- Fix several possible bugs

Pi 1.1:
- Add internal viewer for Pi's first 100,000 digits
- You can still view full digits in external text viewer
- Fix several crashes


Lists with Pi

Some lists where this application appears: Reviewed by Emmanuel Lund.

Screenshots Pi
View bigger - Pi for Android screenshot
View bigger - Pi for Android screenshot
Comments and ratings for Pi
  • (50)

    by Daniel Talbert on 30/04/2014

    mY gs3 running 4.1 clocks 113.067 thats way slow which means I have an issue somewhere, no to find it! Ill update as I figure it out.

  • (50)

    by Patrick McKibbon on 07/04/2014

    Samsung Galaxy S2 SCH-760X did it in 112.959

  • (50)

    by big lou looney on 05/04/2014

    10M in 29.6 sec. Galaxy Note 3.

  • (50)

    by Warren Malcolm on 08/03/2014

    At least within the app, and not having to go to clear data.

  • (50)

    by Jacob Havinga on 26/02/2014

    Running Viper One ROM it took 37.917 seconds for 10.000.000 digits. No bloatware.

  • (50)

    by Kelvin Hong on 17/02/2014

    This is an excellently written app and benchmark for CPU performance. I highly recommend it. (Got 33.943s on my OC Nexus 4! )

  • (50)

    by Gene Lee on 16/02/2014

    Only for math nerds. The rest of you, go away!