# Serialist Tracker vs 六九書吧

The clearest difference is in-app purchases: 六九書吧 at none against Serialist Tracker's 2. 六九書吧 also leads on iOS requirement (16.4 vs 26.0). Serialist Tracker's advantage is ads (none vs shown) and update cadence (every 2 days vs every 2 weeks). On price and device support there is nothing between them.

Both are free to download. Serialist Tracker sells 2 one-off in-app purchases. 六九書吧 asks for nothing beyond the download.

Serialist Tracker ships an update every 2 days, 六九書吧 every 2 weeks. The most recent releases landed on October 23, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Serialist Tracker | 六九書吧 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 2 days** | Every 2 weeks |
| Size | 26 MB | 33 MB |
| Requires iOS | 26.0 | **16.4** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Ping-Chang Chen](https://appshunter.io/developer/1854443345) | [Diem Quynh Le Thi](https://appshunter.io/developer/1549495688) |

## What reviewers say

### Serialist Tracker

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

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

**In-app purchases (2)**

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


### 六九書吧

[App page](https://appshunter.io/ios/app/id6761373048)

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

**In-app purchases:** none


## Frequently asked questions

### Is Serialist Tracker free?

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

### Is 六九書吧 free?

六九書吧 is free to download, with no in-app purchases.

### Do Serialist Tracker or 六九書吧 have ads?

六九書吧 shows ads; Serialist Tracker does not.

### Which is updated more often, Serialist Tracker or 六九書吧?

Serialist Tracker ships an update every 2 days, and 六九書吧 every 2 weeks. Most recently, Serialist Tracker was updated on October 23, 2026 and 六九書吧 on October 6, 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.*