# Spine vs Pertukxane

The clearest difference is update cadence: Spine at every 4 days against Pertukxane's monthly. Pertukxane's advantage is iOS requirement (13.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Spine ships an update every 4 days, Pertukxane monthly. The most recent releases landed on October 25, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Spine | Pertukxane |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (30 ratings)](https://appshunter.io/ios/app/spine-audiobook-player/id6764636615/reviews)** | — |
| Number of ratings | **30** | — |
| Positive reviews | 85.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Monthly |
| Monetization | Free | — |
| Size | 15 MB | 27 MB |
| Requires iOS | 26.0 | **13.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 12+ | 17+ |
| Developer | [Accelyze Inc.](https://appshunter.io/developer/1895859588) | [ASO Nadir](https://appshunter.io/developer/6773089113) |

## What reviewers say

### Spine

[App page](https://appshunter.io/ios/app/spine-audiobook-player/id6764636615)

This app enhances audiobook listening with features like listener levels, daily streaks, and shareable year-end recaps. It offers a beautiful, integrated player and syncs with Hardcover, all while keeping your data private on-device.

**Highlights:** Integrated audiobook player, Listener levels and daily streaks, Hardcover sync, On-device AI summaries, Shareable year-in-review recap, Lock screen and widget controls

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases:** none


### Pertukxane

[App page](https://appshunter.io/ios/app/pertukxane/id6773089111)

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

**In-app purchases:** none


## Frequently asked questions

### Is Spine free?

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

### Is Pertukxane free?

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

### Do Spine or Pertukxane have ads?

Neither Spine nor Pertukxane shows ads.

### Which is updated more often, Spine or Pertukxane?

Spine ships an update every 4 days, and Pertukxane monthly. Most recently, Spine was updated on October 25, 2026 and Pertukxane on October 14, 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.*