# LectureWatch vs かいもの帳

The clearest difference is in-app purchases: LectureWatch at none against かいもの帳's 1. LectureWatch also leads on device support (3 vs 1). かいもの帳's advantage is update cadence (every 4 days vs every 2 months). On price, ads and iOS requirement there is nothing between them.

Both are free to download. かいもの帳 sells 1 one-off in-app purchase. LectureWatch asks for nothing beyond the download.

LectureWatch ships an update every 2 months, かいもの帳 every 4 days. The most recent releases landed on November 9, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | LectureWatch | かいもの帳 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Size | 8 MB | 49 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [TARO TATSUMI](https://appshunter.io/developer/1836111580) | [Masanori Kudo](https://appshunter.io/developer/6776620310) |

## What reviewers say

### LectureWatch

[App page](https://appshunter.io/ios/app/lecturewatch/id6754700306)

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

**In-app purchases:** none


### かいもの帳

[App page](https://appshunter.io/ios/app/id6776620308)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro プラン | $2.99 | one-time |


## Frequently asked questions

### Is LectureWatch free?

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

### Is かいもの帳 free?

かいもの帳 is free to download, with in-app purchases available.

### Do LectureWatch or かいもの帳 have ads?

Neither LectureWatch nor かいもの帳 shows ads.

### Which is updated more often, LectureWatch or かいもの帳?

LectureWatch ships an update every 2 months, and かいもの帳 every 4 days. Most recently, LectureWatch was updated on November 9, 2026 and かいもの帳 on October 28, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*