# Flow Fill vs Gridtopia Nonogram

The clearest difference is in-app purchases: Flow Fill at none against Gridtopia Nonogram's 6. Flow Fill also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). Gridtopia Nonogram's advantage is update cadence (every 5 days vs every 3 weeks). On price and device support there is nothing between them.

Both are free to download. Gridtopia Nonogram sells 6 one-off in-app purchases. Flow Fill asks for nothing beyond the download.

Flow Fill ships an update every 3 weeks, Gridtopia Nonogram every 5 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Flow Fill | Gridtopia Nonogram |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Size | 61 MB | 49 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [FGTP Labs](https://appshunter.io/developer/1849326000) | [ILTAE KIM](https://appshunter.io/developer/1850599567) |

## What reviewers say

### Flow Fill

[App page](https://appshunter.io/ios/app/flow-fill-color-path-puzzle/id6756607714)

**Features:** macOS Compatibility

**In-app purchases:** none


### Gridtopia Nonogram

[App page](https://appshunter.io/ios/app/gridtopia-nonogram/id6776083146)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coin Pouch | $0.99 | one-time |
| Starter Pack | $1.99 | one-time |
| Coin Sack | $2.99 | one-time |
| Booster pack | $2.99 | one-time |
| Coin chest | $9.99 | one-time |
| Mega Pack | $14.99 | one-time |


## Frequently asked questions

### Is Flow Fill free?

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

### Is Gridtopia Nonogram free?

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

### Do Flow Fill or Gridtopia Nonogram have ads?

Gridtopia Nonogram shows ads; Flow Fill does not.

### Which is updated more often, Flow Fill or Gridtopia Nonogram?

Flow Fill ships an update every 3 weeks, and Gridtopia Nonogram every 5 days. Most recently, Flow Fill was updated on October 24, 2026 and Gridtopia Nonogram on October 25, 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.*