# Ultimate Block Puzzle Solver vs Assembly Line 2

The clearest difference is review sentiment: Assembly Line 2 at 80% against Ultimate Block Puzzle Solver's 25%. Assembly Line 2 also leads on rating (4.8 vs 1.6) and update cadence (weekly vs every 2 months). Ultimate Block Puzzle Solver's advantage is ads (none vs shown) and monetization model (free vs ad-supported). 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.

Assembly Line 2 holds the better App Store score, 4.8 against 1.6. That said, the two scores are not equally well evidenced: Assembly Line 2 has 1.5K ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 25% of Ultimate Block Puzzle Solver's written reviews are positive against 80% of Assembly Line 2's.

Ultimate Block Puzzle Solver ships an update every 2 months, Assembly Line 2 weekly. The most recent releases landed on August 21, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Ultimate Block Puzzle Solver | Assembly Line 2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.6 (7 ratings)](https://appshunter.io/ios/app/ultimate-block-puzzle-solver/id902930515/reviews) | **[4.8 (1.5K ratings)](https://appshunter.io/ios/app/assembly-line-2/id1669722484/reviews)** |
| Number of ratings | 7 | **1.5K** |
| Positive reviews | 25.0% of reviews | **79.5% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | **Free** | Ad-supported |
| Size | 26 MB | 138 MB |
| Requires iOS | **6.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yong Yong Khoo](https://appshunter.io/developer/902930518) | [Joao Reis](https://appshunter.io/developer/1633456295) |

## What reviewers say

### Ultimate Block Puzzle Solver

[App page](https://appshunter.io/ios/app/ultimate-block-puzzle-solver/id902930515)

This tool helps solve block puzzle games by generating solutions almost instantly. Input puzzle dimensions and block information to receive a solution. It supports various grid sizes and can be used offline.

**Highlights:** Universal block puzzle solver, Generate solutions instantly, Intuitive block drawing/editing, Supports 3x3 to 12x12 dimensions, Offline usability

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

**In-app purchases:** none


### Assembly Line 2

[App page](https://appshunter.io/ios/app/assembly-line-2/id1669722484)

Build and manage a factory to craft and sell resources. Optimize your assembly line with various machines and upgrades to maximize profits, even while offline. Discover new resources and make strategic decisions to grow your industrial empire.

**Highlights:** Build and optimize 21 different machines, Unlock tons of upgrades, Craft around 50 unique resources, Offline progress generation, Informative machine and resource data, Progress backup

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Fun gameplay
- 👍 Optional ads
- 🎨 Good visuals
- 🕹️ Engaging factory management

**What reviewers complain about**

- 🐛 Clunky controls
- 🔋 Battery drain issues
- 🧭 Unclear progression
- 🧠 Tedious menu navigation

**Reported bugs**

- Inconsistent offline earnings
- Crafters and splitters stop working
- Crashes on launch

**Requested features**

- Copy/paste assembly lines
- Rotate/flip multiple machines
- Pause production
- Better performance optimization


## Frequently asked questions

### Is Ultimate Block Puzzle Solver free?

Ultimate Block Puzzle Solver is free to download, with no in-app purchases.

### Is Assembly Line 2 free?

Assembly Line 2 is free to download, with no in-app purchases.

### Which has better reviews, Ultimate Block Puzzle Solver or Assembly Line 2?

Assembly Line 2 is rated higher. Ultimate Block Puzzle Solver averages 1.6 out of 5 from 7 ratings, while Assembly Line 2 averages 4.8 from 1.5K ratings.

### Do Ultimate Block Puzzle Solver or Assembly Line 2 have ads?

Assembly Line 2 shows ads; Ultimate Block Puzzle Solver does not.

### Which is updated more often, Ultimate Block Puzzle Solver or Assembly Line 2?

Ultimate Block Puzzle Solver ships an update every 2 months, and Assembly Line 2 weekly. Most recently, Ultimate Block Puzzle Solver was updated on August 21, 2026 and Assembly Line 2 on September 23, 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.*