# ClassLog vs 序日

The clearest difference is price: 序日 at Free against ClassLog's $1.99. 序日 also leads on update cadence (daily vs monthly). ClassLog's advantage is in-app purchases (none vs 1) and iOS requirement (14.0 vs 18.0). On ads and device support there is nothing between them.

序日 is free to download; ClassLog costs $1.99 up front. 序日 sells 1 one-off in-app purchase. ClassLog asks for nothing beyond the download.

ClassLog ships an update monthly, 序日 daily. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | ClassLog | 序日 |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id6811274043/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Daily** |
| Size | 21 MB | 21 MB |
| Requires iOS | **14.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [明昭 路](https://appshunter.io/developer/1890357342) | [琦 张](https://appshunter.io/developer/6811089301) |

## What reviewers say

### ClassLog

[App page](https://appshunter.io/ios/app/classlog-attendance-tracker/id6791393409)

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

**In-app purchases:** none


### 序日

[App page](https://appshunter.io/ios/app/id6811274043)

**Features:** Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 序日 Pro · One-time Purchase | $1.99 | one-time |


## Frequently asked questions

### Is ClassLog free?

ClassLog costs $1.99, with no in-app purchases.

### Is 序日 free?

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

### Do ClassLog or 序日 have ads?

Neither ClassLog nor 序日 shows ads.

### Which is updated more often, ClassLog or 序日?

ClassLog ships an update monthly, and 序日 daily. Most recently, ClassLog was updated on October 25, 2026 and 序日 on October 24, 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.*