# What Is Missing vs Collect Letters!

The clearest difference is in-app purchases: What Is Missing at none against Collect Letters!'s 10. What Is Missing also leads on update cadence (monthly vs every 17 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Collect Letters! sells 10 one-off in-app purchases. What Is Missing asks for nothing beyond the download.

What Is Missing ships an update monthly, Collect Letters! every 17 months. The most recent releases landed on October 12, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | What Is Missing | Collect Letters! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.1 (11 ratings)](https://appshunter.io/ios/app/what-is-missing/id1614264388/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Monthly** | Every 17 months |
| Monetization | Ad-supported | — |
| Size | 142 MB | 157 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MIDPOLY OYUN YAZILIM TASARIM DANISMANLIK HIZMETLERI VE TICARET ANONIM SIRKETI](https://appshunter.io/developer/1465253591) | [Rootcraft](https://appshunter.io/developer/1370994577) |

## What reviewers say

### What Is Missing

[App page](https://appshunter.io/ios/app/what-is-missing/id1614264388)

This is a word-guessing game where players must identify missing letters to complete words. It offers a simple yet engaging challenge for vocabulary and spelling practice. The game is free to play and available on iOS devices.

**Highlights:** Word guessing gameplay, Identify missing letters, Complete words, Vocabulary practice, Spelling challenge

**Features:** macOS Compatibility

**In-app purchases:** none


### Collect Letters!

[App page](https://appshunter.io/ios/app/collect-letters/id6462407299)

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3,000 Gems | $1.99 | one-time |
| 1,500 Cards | $1.99 | one-time |
| 1,000,000 Coins | $1.99 | one-time |
| 5,000 Gems | $2.99 | one-time |
| 8,000 Cards | $3.99 | one-time |
| 8,000 Gems | $3.99 | one-time |
| 16,000 Gems | $4.99 | one-time |
| 60,000 Cards | $5.99 | one-time |
| 50,000 Gems | $5.99 | one-time |
| 120,000 Gems | $6.99 | one-time |


## Frequently asked questions

### Is What Is Missing free?

What Is Missing is free to download, with no in-app purchases.

### Is Collect Letters! free?

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

### Do What Is Missing or Collect Letters! have ads?

Both What Is Missing and Collect Letters! show ads.

### Which is updated more often, What Is Missing or Collect Letters!?

What Is Missing ships an update monthly, and Collect Letters! every 17 months. Most recently, What Is Missing was updated on October 12, 2026 and Collect Letters! on October 7, 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.*