# Flow Fill! vs HorizonQuest

The clearest difference is ads: HorizonQuest at none against Flow Fill!'s shown. HorizonQuest also leads on update cadence (weekly vs every 5 weeks). Flow Fill!'s advantage is iOS requirement (15.0 vs 26.2). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Flow Fill! ships an update every 5 weeks, HorizonQuest weekly. The most recent releases landed on October 24, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Flow Fill! | HorizonQuest |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (6 ratings)](https://appshunter.io/ios/app/flow-fill/id6755528359/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Weekly** |
| Monetization | Ad-supported | — |
| Size | 320 MB | 5 MB |
| Requires iOS | **15.0** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Fundora Games](https://appshunter.io/developer/1838341751) | [Labyrinth Foundation](https://appshunter.io/developer/1875562373) |

## What reviewers say

### Flow Fill!

[App page](https://appshunter.io/ios/app/flow-fill/id6755528359)

This physics-based puzzle game challenges you to predict how liquid flows through connected tanks. Drag numbered balls to lock in your predictions and watch the simulation unfold. Master the logic to progress through increasingly difficult levels.

**Highlights:** Predictive liquid flow puzzles, Physics-based simulation, Progressive difficulty, Intuitive drag-and-drop controls, Real-time visual feedback, Logic-testing gameplay

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

**In-app purchases:** none


### HorizonQuest

[App page](https://appshunter.io/ios/app/horizonquest/id6760226835)

**In-app purchases:** none


## Frequently asked questions

### Is Flow Fill! free?

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

### Is HorizonQuest free?

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

### Do Flow Fill! or HorizonQuest have ads?

Flow Fill! shows ads; HorizonQuest does not.

### Which is updated more often, Flow Fill! or HorizonQuest?

Flow Fill! ships an update every 5 weeks, and HorizonQuest weekly. Most recently, Flow Fill! was updated on October 24, 2026 and HorizonQuest 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.*