# Flow Fill! vs Lock Tangle

The clearest difference is update cadence: Lock Tangle at every 4 days against Flow Fill!'s every 3 weeks. Lock Tangle also leads on ratings volume (23 vs 4). On price, rating, ads and in-app purchases there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.3 for Flow Fill! against 4.3 for Lock Tangle. That said, the two scores are not equally well evidenced: Lock Tangle has 23 ratings behind it against 4, so its average is the more settled of the two.

Flow Fill! ships an update every 3 weeks, Lock Tangle every 4 days. The most recent releases landed on October 4, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Flow Fill! | Lock Tangle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (4 ratings)](https://appshunter.io/ios/app/flow-fill/id6755528359/reviews) | [4.3 (23 ratings)](https://appshunter.io/ios/app/lock-tangle/id6758449026/reviews) |
| Number of ratings | 4 | **23** |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Monetization | Ad-supported | Ad-supported |
| Size | 310 MB | 220 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Fundora Games](https://appshunter.io/developer/1838341751) | [Can Hulagu](https://appshunter.io/developer/1629006728) |

## 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


### Lock Tangle

[App page](https://appshunter.io/ios/app/lock-tangle/id6758449026)

Arrange keys into matching slots within a confined space. Strategically drag keys through gaps to unlock chests, but be mindful that some moves can block access for remaining keys. Clear the board before the timer runs out to succeed.

**Highlights:** Key and slot matching puzzles, Strategic key placement, Board clearing challenges, Time-based gameplay, Unlockable chests

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

**In-app purchases:** none


## Frequently asked questions

### Is Flow Fill! free?

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

### Is Lock Tangle free?

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

### Which has better reviews, Flow Fill! or Lock Tangle?

Flow Fill! and Lock Tangle are both rated 4.3 out of 5 on the App Store, from 4 and 23 ratings respectively.

### Do Flow Fill! or Lock Tangle have ads?

Both Flow Fill! and Lock Tangle show ads.

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

Flow Fill! ships an update every 3 weeks, and Lock Tangle every 4 days. Most recently, Flow Fill! was updated on October 4, 2026 and Lock Tangle on October 2, 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.*