# Claydeck UPSC vs Tahu

The clearest difference is in-app purchases: Claydeck UPSC at none against Tahu's 1. Claydeck UPSC also leads on iOS requirement (15.1 vs 17.0). Tahu's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. Tahu sells 1 one-off in-app purchase. Claydeck UPSC asks for nothing beyond the download.

Claydeck UPSC ships an update every 3 weeks, Tahu monthly. Both last shipped on October 30, 2026.

## The numbers

| Metric | Claydeck UPSC | Tahu |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tahu-ai-youtube-study-planner/id6743108882/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | — | Free with in-app purchases |
| Size | 67 MB | 49 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ArcTech Labs Private Ltd](https://appshunter.io/developer/1701371834) | [SunVera Software](https://appshunter.io/developer/736371234) |

## What reviewers say

### Claydeck UPSC

[App page](https://appshunter.io/ios/app/claydeck-upsc/id6740053625)

**Features:** macOS Compatibility

**In-app purchases:** none


### Tahu

[App page](https://appshunter.io/ios/app/tahu-ai-youtube-study-planner/id6743108882)

Transform YouTube videos into structured study plans with chapters, key concepts, and quizzes. This tool helps learners of all types study smarter and faster by organizing educational content from videos.

**Highlights:** Structured study plans from YouTube videos, Chapter and key concept breakdown, Integrated quizzes for knowledge retention, Jump to specific video segments, Mark tasks as completed, Simplify complex tasks

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy Recipe | $2.99 | one-time |


## Frequently asked questions

### Is Claydeck UPSC free?

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

### Is Tahu free?

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

### Do Claydeck UPSC or Tahu have ads?

Claydeck UPSC shows ads; Tahu does not.

### Which is updated more often, Claydeck UPSC or Tahu?

Claydeck UPSC ships an update every 3 weeks, and Tahu monthly. Most recently, Claydeck UPSC was updated on October 30, 2026 and Tahu on October 30, 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.*