# Memorize Pi Digits vs Actum Pro

The clearest difference is price: Actum Pro at Free against Memorize Pi Digits's $4.99. Actum Pro also leads on ads (none vs shown) and update cadence (daily vs every 5 months). On in-app purchases, device support and iOS requirement there is nothing between them.

Actum Pro is free to download; Memorize Pi Digits costs $4.99 up front. Memorize Pi Digits sells 1 one-off in-app purchase and Actum Pro sells 2 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

Memorize Pi Digits ships an update every 5 months, Actum Pro daily. Both last shipped on November 6, 2026.

## The numbers

| Metric | Memorize Pi Digits | Actum Pro |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[4.4 (155 ratings)](https://appshunter.io/ios/app/memorize-pi-digits-314/id1264340985/reviews)** | — |
| Number of ratings | **155** | — |
| Positive reviews | 74.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 103 MB | 6 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Oscar Tsang](https://appshunter.io/developer/416987065) | [DC Digital Limited Liability Company](https://appshunter.io/developer/6817925051) |

## What reviewers say

### Memorize Pi Digits

[App page](https://appshunter.io/ios/app/memorize-pi-digits-314/id1264340985)

This app helps you memorize digits of Pi, offering up to one million digits for practice. It features a dark mode interface and a network competition mode for up to five players. Ideal for educational purposes and memory improvement.

**Highlights:** Memorize up to 1 million Pi digits, Dark mode UI design, Network competition mode (up to 5 players), Educational game for memory improvement, Track progress day by day

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove AD | $1.99 | one-time |


### Actum Pro

[App page](https://appshunter.io/ios/app/actum-pro/id6817925049)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Actum Pro Premium Monthly | $7.99 | per month |
| Actum Pro Premium Annual | $69.99 | per year |


## Frequently asked questions

### Is Memorize Pi Digits free?

Memorize Pi Digits costs $4.99, and also offers in-app purchases.

### Is Actum Pro free?

Actum Pro is free to download, with in-app purchases available.

### Do Memorize Pi Digits or Actum Pro have ads?

Memorize Pi Digits shows ads; Actum Pro does not.

### Which is updated more often, Memorize Pi Digits or Actum Pro?

Memorize Pi Digits ships an update every 5 months, and Actum Pro daily. Most recently, Memorize Pi Digits was updated on November 6, 2026 and Actum Pro on November 6, 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.*