# PetWall vs Aligner Tracker

The clearest difference is update cadence: PetWall at fortnightly against Aligner Tracker's every 6 weeks. 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.

PetWall ships an update fortnightly, Aligner Tracker every 6 weeks. The most recent releases landed on September 23, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | PetWall | Aligner Tracker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 6 weeks |
| Size | 86 MB | 3 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [鸿宇 何](https://appshunter.io/developer/1803509416) | [Feiyu Chang](https://appshunter.io/developer/1492595678) |

## What reviewers say

### PetWall

[App page](https://appshunter.io/ios/app/petwall-wallpaper/id6767121465)

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

**In-app purchases:** none


### Aligner Tracker

[App page](https://appshunter.io/ios/app/aligner-tracker-ac/id6776087674)

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

**In-app purchases:** none


## Frequently asked questions

### Is PetWall free?

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

### Is Aligner Tracker free?

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

### Do PetWall or Aligner Tracker have ads?

Neither PetWall nor Aligner Tracker shows ads.

### Which is updated more often, PetWall or Aligner Tracker?

PetWall ships an update fortnightly, and Aligner Tracker every 6 weeks. Most recently, PetWall was updated on September 23, 2026 and Aligner Tracker on October 9, 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.*