# Block Line Up vs SynthStack

The clearest difference is in-app purchases: Block Line Up at none against SynthStack's 1. Block Line Up also leads on ads (none vs shown) and iOS requirement (12.0 vs 15.6). SynthStack's advantage is update cadence (every 2 days vs every 14 months). On price and device support there is nothing between them.

Both are free to download. SynthStack sells 1 one-off in-app purchase. Block Line Up asks for nothing beyond the download.

Block Line Up ships an update every 14 months, SynthStack every 2 days. The most recent releases landed on September 15, 2026 and August 19, 2026 respectively.

## The numbers

| Metric | Block Line Up | SynthStack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/synthstack-block-puzzle-game/id6504832555/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 14 months | **Every 2 days** |
| Monetization | — | Free with in-app purchases |
| Size | 68 MB | 22 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yellow Duck Games Inc.](https://appshunter.io/developer/1129366773) | [Nurullah Macun](https://appshunter.io/developer/1754005758) |

## What reviewers say

### Block Line Up

[App page](https://appshunter.io/ios/app/block-line-up/id6446652739)

**Features:** macOS Compatibility

**In-app purchases:** none


### SynthStack

[App page](https://appshunter.io/ios/app/synthstack-block-puzzle-game/id6504832555)

A neon-lit puzzle game set in a cyberpunk world. Stack and align vibrant shapes to clear levels, challenging your strategy and reflexes with retro-futuristic visuals and immersive soundscapes.

**Highlights:** Neon-lit cyberpunk world, Stack and align vibrant shapes, Retro-futuristic visuals, Immersive soundscapes, Strategy and reflex challenges, High score chasing

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $2.99 | one-time |


## Frequently asked questions

### Is Block Line Up free?

Block Line Up is free to download, with no in-app purchases.

### Is SynthStack free?

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

### Do Block Line Up or SynthStack have ads?

SynthStack shows ads; Block Line Up does not.

### Which is updated more often, Block Line Up or SynthStack?

Block Line Up ships an update every 14 months, and SynthStack every 2 days. Most recently, Block Line Up was updated on September 15, 2026 and SynthStack on August 19, 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.*