# PuzzleVision vs 21 Letters

The clearest difference is in-app purchases: PuzzleVision at none against 21 Letters's 6. PuzzleVision also leads on ads (none vs shown). 21 Letters's advantage is update cadence (every 2 days vs every 5 days) and iOS requirement (12.0 vs 17.0). On price and device support there is nothing between them.

Both are free to download. 21 Letters sells 6 one-off in-app purchases. PuzzleVision asks for nothing beyond the download.

PuzzleVision ships an update every 5 days, 21 Letters every 2 days. The most recent releases landed on October 13, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | PuzzleVision | 21 Letters |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (64 ratings)](https://appshunter.io/ios/app/21-letters/id6504524436/reviews)** |
| Number of ratings | — | **64** |
| Positive reviews | — | 81.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 days | **Every 2 days** |
| Monetization | — | Free with in-app purchases |
| Size | 5 MB | 106 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Constructivist Toolkit (CT), LLC](https://appshunter.io/developer/1453071637) | [Shallot Games, LLC.](https://appshunter.io/developer/916624104) |

## What reviewers say

### PuzzleVision

[App page](https://appshunter.io/ios/app/puzzlevision/id6477632172)

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

**In-app purchases:** none


### 21 Letters

[App page](https://appshunter.io/ios/app/21-letters/id6504524436)

A daily word game where you build connecting words to achieve a high score. Compete with friends and family using the same daily set of letters. The game ends when you run out of letters or can no longer form words.

**Highlights:** Daily word challenges, Connecting word building, High score tracking, Friend and family competition, Unique daily letter sets

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| August 2024 Ad-Free | $2.99 | one-time |
| September 2024 Ad-Free | $2.99 | one-time |
| October 2024 Ad-Free | $2.99 | one-time |
| May 2024 Ad-Free | $2.99 | one-time |
| June 2024 Ad-Free | $2.99 | one-time |
| July 2024 Ad-Free | $2.99 | one-time |


## Frequently asked questions

### Is PuzzleVision free?

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

### Is 21 Letters free?

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

### Do PuzzleVision or 21 Letters have ads?

21 Letters shows ads; PuzzleVision does not.

### Which is updated more often, PuzzleVision or 21 Letters?

PuzzleVision ships an update every 5 days, and 21 Letters every 2 days. Most recently, PuzzleVision was updated on October 13, 2026 and 21 Letters 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.*