# WhyTube(와이튜브)_과학 동영상 vs Tutor Note

The clearest difference is in-app purchases: Tutor Note at none against WhyTube(와이튜브)_과학 동영상's 10. Tutor Note also leads on update cadence (every 3 weeks vs every 6 weeks). WhyTube(와이튜브)_과학 동영상's advantage is iOS requirement (6.1 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. WhyTube(와이튜브)_과학 동영상 sells 10 one-off in-app purchases. Tutor Note asks for nothing beyond the download.

WhyTube(와이튜브)_과학 동영상 ships an update every 6 weeks, Tutor Note every 3 weeks. The most recent releases landed on October 15, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | WhyTube(와이튜브)_과학 동영상 | Tutor Note |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 101 MB | 42 MB |
| Requires iOS | **6.1** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [(주)예림당](https://appshunter.io/developer/565049166) | [UnderTheDesk](https://appshunter.io/developer/1867982597) |

## What reviewers say

### WhyTube(와이튜브)_과학 동영상

[App page](https://appshunter.io/ios/app/whytube/id992767988)

Access a vast library of over 600 science video lessons, complementing a popular children's book series. Enjoy daily free videos and a full series on space, all accessible on mobile devices.

**Highlights:** Extensive science video library, Complements popular book series, Daily free video content, Full space series available, Accessible on mobile devices, Linked to book pages

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1권~5권 | $0.99 | one-time |
| 11권~15권 | $0.99 | one-time |
| 21권~25권 | $0.99 | one-time |
| 26권~30권 | $0.99 | one-time |
| 31권~35권 | $0.99 | one-time |
| 36권~40권 | $0.99 | one-time |
| 41권~45권 | $0.99 | one-time |
| 46권~50권 | $0.99 | one-time |
| 51권~55권 | $1.99 | one-time |
| 1권~50권 | $9.99 | one-time |


### Tutor Note

[App page](https://appshunter.io/ios/app/tutor-note-lesson-planner/id6757630804)

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

**In-app purchases:** none


## Frequently asked questions

### Is WhyTube(와이튜브)_과학 동영상 free?

WhyTube(와이튜브)_과학 동영상 is free to download, with in-app purchases available.

### Is Tutor Note free?

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

### Do WhyTube(와이튜브)_과학 동영상 or Tutor Note have ads?

Neither WhyTube(와이튜브)_과학 동영상 nor Tutor Note shows ads.

### Which is updated more often, WhyTube(와이튜브)_과학 동영상 or Tutor Note?

WhyTube(와이튜브)_과학 동영상 ships an update every 6 weeks, and Tutor Note every 3 weeks. Most recently, WhyTube(와이튜브)_과학 동영상 was updated on October 15, 2026 and Tutor Note on October 10, 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.*