# Learn Pi By Karina vs Pi

The clearest difference is rating: Learn Pi By Karina at 5.0 against Pi's 4.0. Learn Pi By Karina also leads on ratings volume (3 vs 1) and iOS requirement (11.4 vs 17.6). Pi's advantage is update cadence (every 2 days vs every 25 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Learn Pi By Karina holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

Learn Pi By Karina ships an update every 25 months, Pi every 2 days. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Learn Pi By Karina | Pi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/learn-pi-by-karina/id1219552192/reviews)** | [4.0 (1 ratings)](https://appshunter.io/ios/app/pi-infinite-digits/id6760476465/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 25 months | **Every 2 days** |
| Monetization | Free | Free |
| Size | 1 MB | 4 MB |
| Requires iOS | **11.4** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sanjay Grover MD, FACS](https://appshunter.io/developer/508941289) | [Olivier Mallet](https://appshunter.io/developer/1884261967) |

## What reviewers say

### Learn Pi By Karina

[App page](https://appshunter.io/ios/app/learn-pi-by-karina/id1219552192)

This app helps users memorize the digits of Pi by breaking them into smaller, manageable groups. It's inspired by a method used to prepare for Pi Day contests, making memorization more accessible. Features include a testing mode with a scoreboard to track progress.

**Highlights:** Breaks Pi digits into smaller groups, Inspired by contest preparation methods, Supports memorization of up to 10,000 digits, Testing mode with elapsed time scoreboard, Track typing speed for Pi digits

**In-app purchases:** none


### Pi

[App page](https://appshunter.io/ios/app/pi-infinite-digits/id6760476465)

Explore the infinite digits of the mathematical constant π with unparalleled precision. Access millions of digits offline or trillions via the internet. Ideal for students, mathematicians, or anyone curious about this fundamental number.

**Highlights:** Calculate first N digits of Pi, Find the Nth digit of Pi, Arbitrary precision up to 50,000 digits offline, Unlimited digits via internet API, Calculation history, Copy and share results

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Learn Pi By Karina free?

Learn Pi By Karina is free to download, with no in-app purchases.

### Is Pi free?

Pi is free to download, with no in-app purchases.

### Which has better reviews, Learn Pi By Karina or Pi?

Learn Pi By Karina is rated higher. Learn Pi By Karina averages 5.0 out of 5 from 3 ratings, while Pi averages 4.0 from 1 ratings.

### Do Learn Pi By Karina or Pi have ads?

Neither Learn Pi By Karina nor Pi shows ads.

### Which is updated more often, Learn Pi By Karina or Pi?

Learn Pi By Karina ships an update every 25 months, and Pi every 2 days. Most recently, Learn Pi By Karina was updated on November 2, 2026 and Pi on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*