# Power Up Puzzler vs Modstack

The clearest difference is in-app purchases: Power Up Puzzler at none against Modstack's 1. Modstack's advantage is ads (none vs shown) and update cadence (every 8 days vs every 10 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Modstack sells 1 one-off in-app purchase. Power Up Puzzler asks for nothing beyond the download.

Power Up Puzzler ships an update every 10 months, Modstack every 8 days. The most recent releases landed on October 2, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Power Up Puzzler | Modstack |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 10 months | **Every 8 days** |
| Size | 337 MB | 30 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gameware Europe Ltd](https://appshunter.io/developer/1794895323) | [NovoBuild LLC](https://appshunter.io/developer/1784126512) |

## What reviewers say

### Power Up Puzzler

[App page](https://appshunter.io/ios/app/power-up-puzzler/id6741695064)

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

**In-app purchases:** none


### Modstack

[App page](https://appshunter.io/ios/app/modstack-programming-puzzle/id6803866356)

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Full Modstack | $3.99 | one-time |


## Frequently asked questions

### Is Power Up Puzzler free?

Power Up Puzzler is free to download, with no in-app purchases.

### Is Modstack free?

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

### Do Power Up Puzzler or Modstack have ads?

Power Up Puzzler shows ads; Modstack does not.

### Which is updated more often, Power Up Puzzler or Modstack?

Power Up Puzzler ships an update every 10 months, and Modstack every 8 days. Most recently, Power Up Puzzler was updated on October 2, 2026 and Modstack on October 10, 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.*