# I vs LectureWatch

The clearest difference is ads: LectureWatch at none against I's shown. LectureWatch also leads on update cadence (every 2 months vs every 6 months). I's advantage is iOS requirement (12.0 vs 15.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

I ships an update every 6 months, LectureWatch every 2 months. The most recent releases landed on September 27, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | I | LectureWatch |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Every 2 months** |
| Size | 35 MB | 8 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Towa TAKEUCHI](https://appshunter.io/developer/1681125787) | [TARO TATSUMI](https://appshunter.io/developer/1836111580) |

## What reviewers say

### I

[App page](https://appshunter.io/ios/app/i-memo/id6502877993)

**Features:** macOS Compatibility

**In-app purchases:** none


### LectureWatch

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

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

**In-app purchases:** none


## Frequently asked questions

### Is I free?

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

### Is LectureWatch free?

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

### Do I or LectureWatch have ads?

I shows ads; LectureWatch does not.

### Which is updated more often, I or LectureWatch?

I ships an update every 6 months, and LectureWatch every 2 months. Most recently, I was updated on September 27, 2026 and LectureWatch on September 19, 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.*