# Synapse vs Unknot

The clearest difference is iOS requirement: Unknot at 12.2 against Synapse's 15.6. On price, update cadence, 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.

Synapse ships an update every 5 days, Unknot every 6 days. The most recent releases landed on October 25, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Synapse | Unknot |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 5 days** | Every 6 days |
| Size | 40 MB | 18 MB |
| Requires iOS | 15.6 | **12.2** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Steve NOSSE](https://appshunter.io/developer/1690451530) | [LELEU LABS LLC](https://appshunter.io/developer/1825013794) |

## What reviewers say

### Synapse

[App page](https://appshunter.io/ios/app/synapse-puzzle-game/id6747728005)

**Features:** macOS Compatibility

**In-app purchases:** none


### Unknot

[App page](https://appshunter.io/ios/app/unknot-trivialize-the-loop/id6748287972)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Synapse free?

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

### Is Unknot free?

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

### Do Synapse or Unknot have ads?

Both Synapse and Unknot show ads.

### Which is updated more often, Synapse or Unknot?

Synapse ships an update every 5 days, and Unknot every 6 days. Most recently, Synapse was updated on October 25, 2026 and Unknot on October 20, 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.*