# Lock Tangle vs Picture Block 3D

The clearest difference is update cadence: Picture Block 3D at daily against Lock Tangle's every 4 days. Picture Block 3D also leads on iOS requirement (13.0 vs 15.0). On price, ads, 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.

Lock Tangle ships an update every 4 days, Picture Block 3D daily. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Lock Tangle | Picture Block 3D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (24 ratings)](https://appshunter.io/ios/app/lock-tangle/id6758449026/reviews)** | — |
| Number of ratings | **24** | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 4 days | **Daily** |
| Monetization | Ad-supported | — |
| Size | 220 MB | 90 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Can Hulagu](https://appshunter.io/developer/1629006728) | [雪 杨](https://appshunter.io/developer/6788771013) |

## What reviewers say

### 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


### Picture Block 3D

[App page](https://appshunter.io/ios/app/picture-block-3d/id6807687758)

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

**In-app purchases:** none


## Frequently asked questions

### Is Lock Tangle free?

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

### Is Picture Block 3D free?

Picture Block 3D is free to download, with no in-app purchases.

### Do Lock Tangle or Picture Block 3D have ads?

Both Lock Tangle and Picture Block 3D show ads.

### Which is updated more often, Lock Tangle or Picture Block 3D?

Lock Tangle ships an update every 4 days, and Picture Block 3D daily. Most recently, Lock Tangle was updated on November 5, 2026 and Picture Block 3D on October 31, 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.*