# Mosaic vs Dark18

The clearest difference is rating: Mosaic at 5.0 against Dark18's 3.8. Mosaic also leads on in-app purchases (none vs 6) and update cadence (every 2 days vs weekly). Dark18's advantage is ratings volume (183 vs 3). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. Dark18 sells 6 in-app purchases, starting at $4.99 per 7 days. Mosaic asks for nothing beyond the download.

Mosaic holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: Dark18 has 183 ratings behind it against 3, so its average is the more settled of the two.

Mosaic ships an update every 2 days, Dark18 weekly. The most recent releases landed on October 30, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | Mosaic | Dark18 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/mosaic-collaborate/id6740144021/reviews)** | [3.8 (183 ratings)](https://appshunter.io/ios/app/dark18/id6749346497/reviews) |
| Number of ratings | 3 | **183** |
| Positive reviews | — | 41.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 2 days** | Weekly |
| Monetization | Ad-supported | Ad-supported |
| Size | 43 MB | 130 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Clay Hindman](https://appshunter.io/developer/1788517466) | [Ana Lucila Gomez Navarro](https://appshunter.io/developer/1830136813) |

## What reviewers say

### Mosaic

[App page](https://appshunter.io/ios/app/mosaic-collaborate/id6740144021)

Work together with friends to finish intricate mosaic puzzles. This app offers a collaborative way to enjoy puzzle-solving with a social twist.

**Highlights:** Collaborative puzzle completion, Social interaction, Mosaic creation, Friend-based gameplay

**In-app purchases:** none


### Dark18

[App page](https://appshunter.io/ios/app/dark18/id6749346497)

A private messenger offering secure end-to-end encrypted chats, HD voice and video calls, and community groups. Share updates through stories that disappear after 24 hours. Enjoy a clean, dark-themed interface designed for privacy and freedom.

**Highlights:** End-to-end encrypted messaging, HD voice and video calls, Private and public groups, 24-hour disappearing stories, Dark-themed interface, Secure sync across devices

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium Access | $4.99 | per 7 days |
| Monthly Premium Access | $8.99 | per month |
| Yearly Premium Access | $90.99 | per year |
| Weekly Premium Access | $5.99 | one-time |
| Monthly Premium Access | $8.99 | one-time |
| Yearly Premium Access | $99.99 | one-time |


## Frequently asked questions

### Is Mosaic free?

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

### Is Dark18 free?

Dark18 is free to download, with in-app purchases available.

### Which has better reviews, Mosaic or Dark18?

Mosaic is rated higher. Mosaic averages 5.0 out of 5 from 3 ratings, while Dark18 averages 3.8 from 183 ratings.

### Do Mosaic or Dark18 have ads?

Both Mosaic and Dark18 show ads.

### Which is updated more often, Mosaic or Dark18?

Mosaic ships an update every 2 days, and Dark18 weekly. Most recently, Mosaic was updated on October 30, 2026 and Dark18 on November 12, 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.*