# Zen Lines vs Knotless

The clearest difference is price: Zen Lines at Free against Knotless's $2.99. Knotless's advantage is update cadence (every 4 days vs every 2 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Zen Lines is free to download; Knotless costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Zen Lines ships an update every 2 months, Knotless every 4 days. The most recent releases landed on October 22, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Zen Lines | Knotless |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/zen-lines/id6762870137/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | Paid | — |
| Size | 5 MB | 10 MB |
| Requires iOS | 18.6 | **18.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CHASE PLACE LLC](https://appshunter.io/developer/444660458) | [Makoto Fukuoka](https://appshunter.io/developer/1817908735) |

## What reviewers say

### Zen Lines

[App page](https://appshunter.io/ios/app/zen-lines/id6762870137)

Embark on a meditative journey where your doodling transforms into a cool color mist, accompanied by soothing sounds. Express your inner peace through ink strokes that sing, finding tranquility and shaping your sound.

**Highlights:** Meditative doodling experience, Sound and color mist effects, Express inner peace through art, Shape your sound with doodles, Relaxing and tranquil gameplay

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

**In-app purchases:** none


### Knotless

[App page](https://appshunter.io/ios/app/knotless/id6778138017)

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

**In-app purchases:** none


## Frequently asked questions

### Is Zen Lines free?

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

### Is Knotless free?

Knotless costs $2.99, with no in-app purchases.

### Do Zen Lines or Knotless have ads?

Neither Zen Lines nor Knotless shows ads.

### Which is updated more often, Zen Lines or Knotless?

Zen Lines ships an update every 2 months, and Knotless every 4 days. Most recently, Zen Lines was updated on October 22, 2026 and Knotless on October 9, 2026.

---

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