# Stack & Fill vs Knit Loop

The clearest difference is in-app purchases: Stack & Fill at none against Knit Loop's 10. Stack & Fill also leads on iOS requirement (13.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Knit Loop sells 6 one-off in-app purchases. Stack & Fill asks for nothing beyond the download.

Stack & Fill ships an update every 9 days, Knit Loop every 5 days. The most recent releases landed on September 30, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Stack & Fill | Knit Loop |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 9 days | **Every 5 days** |
| Monetization | Ad-supported | — |
| Size | 257 MB | 274 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Carlton Forrester](https://appshunter.io/developer/1163317954) | [SUPERSONIC STUDIOS LTD](https://appshunter.io/developer/1499845738) |

## What reviewers say

### Stack & Fill

[App page](https://appshunter.io/ios/app/stack-and-fill/id6755960530)

Tap cubes to fill spaces with matching colors and advance through stages. This puzzle game requires strategic thinking and planning to complete levels. Only the most skilled players can progress.

**Highlights:** Color matching gameplay, Space filling puzzles, Stage progression, Strategic planning, Skill-based challenges

**Features:** macOS Compatibility

**In-app purchases:** none


### Knit Loop

[App page](https://appshunter.io/ios/app/knit-loop/id6756001506)

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coin Pack 1 | $1.99 | one-time |
| Fail Offer | $4.99 | one-time |
| Master Bundle | $19.99 | one-time |
| Mega Bundle | $39.99 | one-time |
| Giant Bundle | $79.99 | one-time |
| Legendary Bundle | $99.99 | one-time |


## Frequently asked questions

### Is Stack & Fill free?

Stack & Fill is free to download, with no in-app purchases.

### Is Knit Loop free?

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

### Do Stack & Fill or Knit Loop have ads?

Both Stack & Fill and Knit Loop show ads.

### Which is updated more often, Stack & Fill or Knit Loop?

Stack & Fill ships an update every 9 days, and Knit Loop every 5 days. Most recently, Stack & Fill was updated on September 30, 2026 and Knit Loop 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.*