# RiddleSum vs Number Grouping Puzzle

The clearest difference is update cadence: Number Grouping Puzzle at weekly against RiddleSum's every 2 months. Number Grouping Puzzle also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. RiddleSum sells 1 one-off in-app purchase and Number Grouping Puzzle sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

RiddleSum ships an update every 2 months, Number Grouping Puzzle weekly. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | RiddleSum | Number Grouping Puzzle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (10 ratings)](https://appshunter.io/ios/app/riddlesum-math-puzzle/id6474078443/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Ad-supported | — |
| Size | 20 MB | 186 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Dmitriy Romanov](https://appshunter.io/developer/689955162) | [Umut Cakmak](https://appshunter.io/developer/1687371801) |

## What reviewers say

### RiddleSum

[App page](https://appshunter.io/ios/app/riddlesum-math-puzzle/id6474078443)

This number puzzle game challenges you to balance rows and columns by selecting the correct numbers. It offers a relaxing, clean design with hundreds of handcrafted puzzles to sharpen logic and mental math skills at your own pace.

**Highlights:** Hundreds of handcrafted puzzles, Clean and minimal design, Helpful hints, No timers, solve at your own pace, Daily brain workout, Logic and mental math training

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


### Number Grouping Puzzle

[App page](https://appshunter.io/ios/app/number-grouping-puzzle/id6743176329)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Forced Ads 1 Year | $0.29 | one-time |


## Frequently asked questions

### Is RiddleSum free?

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

### Is Number Grouping Puzzle free?

Number Grouping Puzzle is free to download, with in-app purchases available.

### Do RiddleSum or Number Grouping Puzzle have ads?

Both RiddleSum and Number Grouping Puzzle show ads.

### Which is updated more often, RiddleSum or Number Grouping Puzzle?

RiddleSum ships an update every 2 months, and Number Grouping Puzzle weekly. Most recently, RiddleSum was updated on November 4, 2026 and Number Grouping Puzzle 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.*