# Learn Pi By Karina vs PiMemory

The clearest difference is ads: Learn Pi By Karina at none against PiMemory's shown. Learn Pi By Karina also leads on iOS requirement (11.4 vs 16.6). PiMemory's advantage is update cadence (fortnightly vs every 25 months). On price, in-app purchases and device support 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 ships an update every 25 months, PiMemory fortnightly. The most recent releases landed on October 29, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Learn Pi By Karina | PiMemory |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/learn-pi-by-karina/id1219552192/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 25 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 1 MB | 11 MB |
| Requires iOS | **11.4** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sanjay Grover MD, FACS](https://appshunter.io/developer/508941289) | [Younghan Kim](https://appshunter.io/developer/1859100256) |

## 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


### PiMemory

[App page](https://appshunter.io/ios/app/pimemory/id6756199880)

**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 PiMemory free?

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

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

PiMemory shows ads; Learn Pi By Karina does not.

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

Learn Pi By Karina ships an update every 25 months, and PiMemory fortnightly. Most recently, Learn Pi By Karina was updated on October 29, 2026 and PiMemory on October 28, 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.*