# DayInBook vs PassiveTrack

The clearest difference is update cadence: DayInBook at every 3 days against PassiveTrack's every 2 months. PassiveTrack's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. DayInBook sells 4 in-app purchases, starting at $1.99 per month and PassiveTrack sells 1 in-app purchase, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

DayInBook ships an update every 3 days, PassiveTrack every 2 months. The most recent releases landed on October 4, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | DayInBook | PassiveTrack |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 2 months |
| Size | 15 MB | 38 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [阳 曹](https://appshunter.io/developer/1599300891) | [DMCS](https://appshunter.io/developer/1889106103) |

## What reviewers say

### DayInBook

[App page](https://appshunter.io/ios/app/dayinbook-fire/id6756570968)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO月订阅 | $1.99 | per month |
| PRO年订阅 | $9.99 | per year |
| AI积分100 | $1.99 | one-time |
| AI积分1000 | $17.99 | one-time |


### PassiveTrack

[App page](https://appshunter.io/ios/app/passivetrack/id6771440752)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PassiveTrack Pro | $4.99 | per month |


## Frequently asked questions

### Is DayInBook free?

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

### Is PassiveTrack free?

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

### Do DayInBook or PassiveTrack have ads?

Neither DayInBook nor PassiveTrack shows ads.

### Which is updated more often, DayInBook or PassiveTrack?

DayInBook ships an update every 3 days, and PassiveTrack every 2 months. Most recently, DayInBook was updated on October 4, 2026 and PassiveTrack on October 18, 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.*