# Serialist Tracker vs AO3 Companion

The clearest difference is iOS requirement: AO3 Companion at 13.0 against Serialist Tracker's 26.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Serialist Tracker sells 2 one-off in-app purchases and AO3 Companion sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Serialist Tracker | AO3 Companion |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 days | — |
| Size | 26 MB | 36 MB |
| Requires iOS | 26.0 | **13.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Ping-Chang Chen](https://appshunter.io/developer/1854443345) | [ilyas inajjar](https://appshunter.io/developer/1864886343) |

## What reviewers say

### Serialist Tracker

[App page](https://appshunter.io/ios/app/serialist-tracker/id6755640167)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tip the Developer | $0.99 | one-time |
| Tip the Developer | $1.99 | one-time |


### AO3 Companion

[App page](https://appshunter.io/ios/app/ao3-companion/id6812898151)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Companion Plus Weekly | $4.99 | per 7 days |
| Companion Plus Annual | $49.99 | per year |


## Frequently asked questions

### Is Serialist Tracker free?

Serialist Tracker is free to download, with in-app purchases available.

### Is AO3 Companion free?

AO3 Companion is free to download, with in-app purchases available.

### Do Serialist Tracker or AO3 Companion have ads?

Neither Serialist Tracker nor AO3 Companion shows ads.

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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.*