# GridFill vs Stack Flow

The clearest difference is in-app purchases: Stack Flow at none against GridFill's 1. Stack Flow also leads on update cadence (daily vs every 4 days) and iOS requirement (15.0 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. GridFill sells 1 one-off in-app purchase. Stack Flow asks for nothing beyond the download.

GridFill ships an update every 4 days, Stack Flow daily. The most recent releases landed on October 30, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | GridFill | Stack Flow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (10 ratings)](https://appshunter.io/ios/app/gridfill-endless-puzzle/id6745104855/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 4 days | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 16 MB | 129 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Clayton Dunwell](https://appshunter.io/developer/1810765838) | [Dipayon Debnath Dip](https://appshunter.io/developer/1566993708) |

## What reviewers say

### GridFill

[App page](https://appshunter.io/ios/app/gridfill-endless-puzzle/id6745104855)

Engage in an endlessly replayable puzzle game by fitting and rotating pieces to fill a grid. Enjoy a relaxing experience with optional timers and a clean, calming design. Unlock customization options with a one-time purchase.

**Highlights:** Infinite puzzles, Clean, calming design, Drag and rotate controls, Share solves and challenge friends, Optional timers, One-time unlock for customization

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Game | $0.99 | one-time |


### Stack Flow

[App page](https://appshunter.io/ios/app/stack-flow-soap-cutting/id6793167382)

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

**In-app purchases:** none


## Frequently asked questions

### Is GridFill free?

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

### Is Stack Flow free?

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

### Do GridFill or Stack Flow have ads?

Both GridFill and Stack Flow show ads.

### Which is updated more often, GridFill or Stack Flow?

GridFill ships an update every 4 days, and Stack Flow daily. Most recently, GridFill was updated on October 30, 2026 and Stack Flow on October 29, 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.*