# Postbot Mosaic vs Seaside Stacks

The clearest difference is in-app purchases: Seaside Stacks at none against Postbot Mosaic's 10. Seaside Stacks also leads on ads (none vs shown) and update cadence (every 2 days vs weekly). Postbot Mosaic's advantage is iOS requirement (15.0 vs 17.0). On price and device support there is nothing between them.

Both are free to download. Postbot Mosaic sells 10 one-off in-app purchases. Seaside Stacks asks for nothing beyond the download.

Postbot Mosaic ships an update weekly, Seaside Stacks every 2 days. The most recent releases landed on October 27, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Postbot Mosaic | Seaside Stacks |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Weekly | **Every 2 days** |
| Size | 180 MB | 37 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [DuoBay Games](https://appshunter.io/developer/6802014707) | [Zachary Moore](https://appshunter.io/developer/1482046993) |

## What reviewers say

### Postbot Mosaic

[App page](https://appshunter.io/ios/app/postbot-mosaic/id6811335477)

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1,000 Coins | $1.99 | one-time |
| Remove Automatic Ads | $4.99 | one-time |
| Remove Auto Ads Bundle | $7.99 | one-time |
| 5,000 Coins | $7.99 | one-time |
| Starter Supply Bundle | $9.99 | one-time |
| 10,000 Coins | $14.99 | one-time |
| Standard Supply Bundle | $19.99 | one-time |
| 25,000 Coins | $29.99 | one-time |
| 50,000 Coins | $49.99 | one-time |
| 100,000 Coins | $99.99 | one-time |


### Seaside Stacks

[App page](https://appshunter.io/ios/app/seaside-stacks/id6817175975)

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

**In-app purchases:** none


## Frequently asked questions

### Is Postbot Mosaic free?

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

### Is Seaside Stacks free?

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

### Do Postbot Mosaic or Seaside Stacks have ads?

Postbot Mosaic shows ads; Seaside Stacks does not.

### Which is updated more often, Postbot Mosaic or Seaside Stacks?

Postbot Mosaic ships an update weekly, and Seaside Stacks every 2 days. Most recently, Postbot Mosaic was updated on October 27, 2026 and Seaside Stacks on October 26, 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.*