# DiffMaster vs Knotwork Puzzle

The clearest difference is in-app purchases: DiffMaster at none against Knotwork Puzzle's 1. Knotwork Puzzle's advantage is update cadence (daily vs fortnightly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Knotwork Puzzle sells 1 one-off in-app purchase. DiffMaster asks for nothing beyond the download.

DiffMaster ships an update fortnightly, Knotwork Puzzle daily. The most recent releases landed on October 7, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | DiffMaster | Knotwork Puzzle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/diffmaster-spot-difference/id6778729497/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Fortnightly | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 149 MB | 26 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [GoEun Choi](https://appshunter.io/developer/1526619924) | [Emre Buyukegribey](https://appshunter.io/developer/1545814018) |

## What reviewers say

### DiffMaster

[App page](https://appshunter.io/ios/app/diffmaster-spot-difference/id6778729497)

This game offers a relaxing visual puzzle experience with charming illustrations and no time pressure. It's designed for casual gamers seeking a stress-free way to unwind and enjoy a gentle brain workout, playable offline anywhere.

**Highlights:** Calm and relaxing gameplay with no timer, Gentle brain workout, Cute and cozy artwork, Playable offline anywhere, Continuous new content updates, Easy zoom feature for detailed inspection

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

**In-app purchases:** none


### Knotwork Puzzle

[App page](https://appshunter.io/ios/app/knotwork-puzzle-loop-lines/id6789190248)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is DiffMaster free?

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

### Is Knotwork Puzzle free?

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

### Do DiffMaster or Knotwork Puzzle have ads?

Both DiffMaster and Knotwork Puzzle show ads.

### Which is updated more often, DiffMaster or Knotwork Puzzle?

DiffMaster ships an update fortnightly, and Knotwork Puzzle daily. Most recently, DiffMaster was updated on October 7, 2026 and Knotwork Puzzle on October 15, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*