# Skyscraper Logic vs must be one

The clearest difference is in-app purchases: must be one at none against Skyscraper Logic's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Skyscraper Logic sells 1 one-off in-app purchase. must be one asks for nothing beyond the download.

Skyscraper Logic ships an update every 3 weeks, must be one every 5 weeks. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Skyscraper Logic | must be one |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 3 weeks** | Every 5 weeks |
| Size | 28 MB | 6 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Huy Huynh](https://appshunter.io/developer/1815003126) | [office-canard games](https://appshunter.io/developer/6793797221) |

## What reviewers say

### Skyscraper Logic

[App page](https://appshunter.io/ios/app/skyscraper-logic-modern-grid/id6759394032)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $5.99 | one-time |


### must be one

[App page](https://appshunter.io/ios/app/must-be-one/id6794124997)

**In-app purchases:** none


## Frequently asked questions

### Is Skyscraper Logic free?

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

### Is must be one free?

must be one is free to download, with no in-app purchases.

### Do Skyscraper Logic or must be one have ads?

Both Skyscraper Logic and must be one show ads.

### Which is updated more often, Skyscraper Logic or must be one?

Skyscraper Logic ships an update every 3 weeks, and must be one every 5 weeks. Most recently, Skyscraper Logic was updated on November 5, 2026 and must be one on October 31, 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.*