# Riddlerr vs RiddleSum

The clearest difference is in-app purchases: Riddlerr at none against RiddleSum's 1. Riddlerr also leads on update cadence (every 3 weeks vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. RiddleSum sells 1 one-off in-app purchase. Riddlerr asks for nothing beyond the download.

Riddlerr ships an update every 3 weeks, RiddleSum every 2 months. The most recent releases landed on August 4, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Riddlerr | RiddleSum |
| --- | --- | --- |
| 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 | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | — | Ad-supported |
| Size | 20 MB | 20 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Vladyslav Yermakov](https://appshunter.io/developer/1659418110) | [Dmitriy Romanov](https://appshunter.io/developer/689955162) |

## What reviewers say

### Riddlerr

[App page](https://appshunter.io/ios/app/riddlerr/id1659418108)

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Riddlerr free?

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

### Is RiddleSum free?

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

### Do Riddlerr or RiddleSum have ads?

Both Riddlerr and RiddleSum show ads.

### Which is updated more often, Riddlerr or RiddleSum?

Riddlerr ships an update every 3 weeks, and RiddleSum every 2 months. Most recently, Riddlerr was updated on August 4, 2026 and RiddleSum on September 15, 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.*