# Word Shelves vs Number Sum Up

The clearest difference is in-app purchases: Word Shelves at none against Number Sum Up's 1. Number Sum Up's advantage is ads (none vs shown) and update cadence (every 3 days vs weekly). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Number Sum Up sells 1 one-off in-app purchase. Word Shelves asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.6 for Word Shelves against 4.5 for Number Sum Up. Both are backed by a comparable volume of ratings — 27 and 40 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Word Shelves ships an update weekly, Number Sum Up every 3 days. The most recent releases landed on October 30, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Word Shelves | Number Sum Up |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (27 ratings)](https://appshunter.io/ios/app/word-shelves/id6479958374/reviews)** | [4.5 (40 ratings)](https://appshunter.io/ios/app/number-sum-up-quick-math/id6502631525/reviews) |
| Number of ratings | 27 | **40** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Weekly | **Every 3 days** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 208 MB | 197 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Halit Tokmak](https://appshunter.io/developer/944196071) | [ALICE GAMES](https://appshunter.io/developer/1726187276) |

## What reviewers say

### Word Shelves

[App page](https://appshunter.io/ios/app/word-shelves/id6479958374)

Engage your vocabulary with a unique 3D word puzzle game. Slide dazzling letters on luxurious shelves to discover hidden words and form new ones. Enjoy a visually rich experience that challenges your word-finding skills.

**Highlights:** Slide letters on shelves, Form words, Discover hidden words, 3D letter graphics, Vocabulary challenge

**In-app purchases:** none


### Number Sum Up

[App page](https://appshunter.io/ios/app/number-sum-up-quick-math/id6502631525)

Solve number puzzles by circling and erasing digits to make rows and columns add up to target sums. This game offers a clean design and varying difficulty levels to sharpen your mental math skills.

**Highlights:** Circle and erase numbers, Solve row and column sum puzzles, Multiple difficulty levels, Varying board sizes, Hint system, Clean and simple design

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $3.99 | one-time |


## Frequently asked questions

### Is Word Shelves free?

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

### Is Number Sum Up free?

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

### Which has better reviews, Word Shelves or Number Sum Up?

Word Shelves is rated higher. Word Shelves averages 4.6 out of 5 from 27 ratings, while Number Sum Up averages 4.5 from 40 ratings.

### Do Word Shelves or Number Sum Up have ads?

Word Shelves shows ads; Number Sum Up does not.

### Which is updated more often, Word Shelves or Number Sum Up?

Word Shelves ships an update weekly, and Number Sum Up every 3 days. Most recently, Word Shelves was updated on October 30, 2026 and Number Sum Up on November 4, 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.*