# Nono Blocks Formula vs DuoDom

The clearest difference is in-app purchases: DuoDom at none against Nono Blocks Formula's 1. DuoDom also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Nono Blocks Formula sells 1 one-off in-app purchase. DuoDom asks for nothing beyond the download.

Nono Blocks Formula ships an update every 3 weeks, DuoDom monthly. The most recent releases landed on October 16, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Nono Blocks Formula | DuoDom |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/nono-blocks-formula/id6695739680/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 90.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 9 MB | 1 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [x2line.com LLC](https://appshunter.io/developer/425135293) | [Josef Sejrek](https://appshunter.io/developer/481227872) |

## What reviewers say

### Nono Blocks Formula

[App page](https://appshunter.io/ios/app/nono-blocks-formula/id6695739680)

This logic puzzle game challenges players to fill in grid cells based on numerical hints to reveal a hidden pattern. With over 100 levels of increasing difficulty, it sharpens problem-solving skills. Enjoy intuitive tap controls on mobile or mouse support on Mac.

**Highlights:** Over 100 logic puzzles, Beginner to advanced difficulty, Intuitive tap controls, Mouse support for Mac, VoiceOver accessibility, Leaderboards for competition

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Check Solution | $0.99 | one-time |


### DuoDom

[App page](https://appshunter.io/ios/app/duodom/id6767910027)

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

**In-app purchases:** none


## Frequently asked questions

### Is Nono Blocks Formula free?

Nono Blocks Formula is free to download, with in-app purchases available.

### Is DuoDom free?

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

### Do Nono Blocks Formula or DuoDom have ads?

Nono Blocks Formula shows ads; DuoDom does not.

### Which is updated more often, Nono Blocks Formula or DuoDom?

Nono Blocks Formula ships an update every 3 weeks, and DuoDom monthly. Most recently, Nono Blocks Formula was updated on October 16, 2026 and DuoDom on October 17, 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.*