# Letter Quest vs Stack Merge Mobile

The clearest difference is iOS requirement: Letter Quest at 11.0 against Stack Merge Mobile's 14.0. On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Stack Merge Mobile holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 11 and 7 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Letter Quest ships an update every 2 weeks, Stack Merge Mobile fortnightly. The most recent releases landed on October 16, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Letter Quest | Stack Merge Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (11 ratings)](https://appshunter.io/ios/app/letter-quest/id1639244273/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/stack-merge-mobile/id6760034466/reviews)** |
| Number of ratings | **11** | 7 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Fortnightly |
| Monetization | Free | Free |
| Size | 92 MB | 76 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Floyd Ross](https://appshunter.io/developer/1602980654) | [Alec Richard Pickup](https://appshunter.io/developer/1882410794) |

## What reviewers say

### Letter Quest

[App page](https://appshunter.io/ios/app/letter-quest/id1639244273)

This timed puzzle game merges letter tiles to spell words, offering both educational fun for children and mental agility challenges for adults. Compete with friends and global players on leaderboards.

**Highlights:** Merge letter tiles, Spell words, Timed challenges, Zen Mode for learning, Global leaderboards, GameCenter integration

**In-app purchases:** none


### Stack Merge Mobile

[App page](https://appshunter.io/ios/app/stack-merge-mobile/id6760034466)

A satisfying puzzle game where players efficiently pack blocks to create higher numbers and earn gold. Compete for high scores on the leaderboard and enjoy a relaxing experience that can be paused and resumed anytime.

**Highlights:** Block stacking puzzle gameplay, High score competition, Leaderboard rankings, In-game item usage, Pause and resume functionality, Relaxing time-passing activity

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

**In-app purchases:** none


## Frequently asked questions

### Is Letter Quest free?

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

### Is Stack Merge Mobile free?

Stack Merge Mobile is free to download, with no in-app purchases.

### Which has better reviews, Letter Quest or Stack Merge Mobile?

Stack Merge Mobile is rated higher. Letter Quest averages 4.8 out of 5 from 11 ratings, while Stack Merge Mobile averages 5.0 from 7 ratings.

### Do Letter Quest or Stack Merge Mobile have ads?

Neither Letter Quest nor Stack Merge Mobile shows ads.

### Which is updated more often, Letter Quest or Stack Merge Mobile?

Letter Quest ships an update every 2 weeks, and Stack Merge Mobile fortnightly. Most recently, Letter Quest was updated on October 16, 2026 and Stack Merge Mobile on October 3, 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.*