# Shelf Tidy vs Sum

The clearest difference is in-app purchases: Shelf Tidy at none against Sum's 1. Shelf Tidy also leads on ads (none vs shown) and update cadence (every 3 days vs every 11 days). On price and device support there is nothing between them.

Both are free to download. Sum sells 1 one-off in-app purchase. Shelf Tidy asks for nothing beyond the download.

Shelf Tidy ships an update every 3 days, Sum every 11 days. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Shelf Tidy | Sum |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.8 (16 ratings)](https://appshunter.io/ios/app/shelf-tidy/id6756618648/reviews)** | — |
| Number of ratings | **16** | — |
| Positive reviews | 11.1% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 days** | Every 11 days |
| Monetization | Free | — |
| Size | 139 MB | 11 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [杰 徐](https://appshunter.io/developer/1591390230) | [Yuttana Suttasupa](https://appshunter.io/developer/1273947543) |

## What reviewers say

### Shelf Tidy

[App page](https://appshunter.io/ios/app/shelf-tidy/id6756618648)

Engage in a unique puzzle game where you clear cascading items, strategically matching fragile or heavy objects. Fulfill customer orders within time limits to earn bonuses and overcome clutter.

**Highlights:** Cascading item clearing, Strategic object matching, Fragile item handling, Heavy object mechanics, Time-based customer orders, Bonus earning

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

**In-app purchases:** none


### Sum

[App page](https://appshunter.io/ios/app/sum-thing-math-link-puzzle/id6809030003)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


## Frequently asked questions

### Is Shelf Tidy free?

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

### Is Sum free?

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

### Do Shelf Tidy or Sum have ads?

Sum shows ads; Shelf Tidy does not.

### Which is updated more often, Shelf Tidy or Sum?

Shelf Tidy ships an update every 3 days, and Sum every 11 days. Most recently, Shelf Tidy was updated on October 30, 2026 and Sum on October 24, 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.*