# Sing LOOP! vs Zen Lines

The clearest difference is price: Zen Lines at Free against Sing LOOP!'s $8.99. Zen Lines also leads on update cadence (every 2 months vs every 5 months). Sing LOOP!'s advantage is iOS requirement (14.0 vs 18.6). On ads, in-app purchases and device support there is nothing between them.

Zen Lines is free to download; Sing LOOP! costs $8.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Sing LOOP! ships an update every 5 months, Zen Lines every 2 months. The most recent releases landed on October 25, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Sing LOOP! | Zen Lines |
| --- | --- | --- |
| Price | $8.99 | **Free** |
| 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 5 months | **Every 2 months** |
| Monetization | — | Paid |
| Size | 5 MB | 5 MB |
| Requires iOS | **14.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Pieter Yoshua Natanael](https://appshunter.io/developer/1657373397) | [CHASE PLACE LLC](https://appshunter.io/developer/444660458) |

## What reviewers say

### Sing LOOP!

[App page](https://appshunter.io/ios/app/sing-loop/id6480459464)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Sing LOOP! free?

Sing LOOP! costs $8.99, with no in-app purchases.

### Is Zen Lines free?

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

### Do Sing LOOP! or Zen Lines have ads?

Neither Sing LOOP! nor Zen Lines shows ads.

### Which is updated more often, Sing LOOP! or Zen Lines?

Sing LOOP! ships an update every 5 months, and Zen Lines every 2 months. Most recently, Sing LOOP! was updated on October 25, 2026 and Zen Lines on October 22, 2026.

---

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