# Pi Digits vs Coldoku

Pi Digits and Coldoku are too close to call on the numbers: across 8 compared parameters — price, review sentiment, update cadence and ads among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Pi Digits ships an update monthly, Coldoku every 6 weeks. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Pi Digits | Coldoku |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pi-digits-memory-challenge/id6467522843/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 weeks |
| Monetization | Free | Free |
| Size | 11 MB | 13 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Slavka Polanova](https://appshunter.io/developer/1708764553) | [Martin Rosenthal](https://appshunter.io/developer/1728895149) |

## What reviewers say

### Pi Digits

[App page](https://appshunter.io/ios/app/pi-digits-memory-challenge/id6467522843)

Test your ability to memorize and recall digits of Pi. Engage in fast-paced challenges to extend your streak and improve your number recall. Ideal for students, puzzle enthusiasts, or anyone seeking a quick mental workout.

**Highlights:** Memorize digits of Pi, Classic typing mode, Timed Blitz mode, Track best streaks, Quick brain workouts, Suitable for all levels

**Features:** macOS Compatibility, Family Sharing

**In-app purchases:** none


### Coldoku

[App page](https://appshunter.io/ios/app/coldoku/id6479543662)

This logic game offers a colorful twist on classic Sudoku, replacing numbers with distinct shapes and hues. The objective is to arrange these elements so that each unique color and shape appears only once per row and column. It's designed as an engaging brain exercise for players of all ages.

**Highlights:** Color and shape-based gameplay, Logic puzzle mechanics, Single-player brain game, Suitable for all ages, Intuitive interface

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Pi Digits free?

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

### Is Coldoku free?

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

### Do Pi Digits or Coldoku have ads?

Neither Pi Digits nor Coldoku shows ads.

### Which is updated more often, Pi Digits or Coldoku?

Pi Digits ships an update monthly, and Coldoku every 6 weeks. Most recently, Pi Digits was updated on November 3, 2026 and Coldoku on October 30, 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.*