# pdf vs ThinkWise

The clearest difference is price: ThinkWise at Free against pdf's $9.99. ThinkWise also leads on review sentiment (100% vs 79%) and device support (3 vs 1). pdf's advantage is update cadence (every 2 weeks vs every 7 months). On ads, in-app purchases and iOS requirement there is nothing between them.

ThinkWise is free to download; pdf costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

pdf ships an update every 2 weeks, ThinkWise every 7 months. The most recent releases landed on June 10, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | pdf | ThinkWise |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[4.4 (27 ratings)](https://appshunter.io/ios/app/pdf-notes-for-ipad/id417200844/reviews)** | — |
| Number of ratings | **27** | — |
| Positive reviews | 79.2% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 7 months |
| Monetization | Paid | **Free** |
| Size | 138 MB | 22 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [AMuseTec Co., Ltd.](https://appshunter.io/developer/342152781) | [SimTech Systems Inc.](https://appshunter.io/developer/530419967) |

## What reviewers say

### pdf

[App page](https://appshunter.io/ios/app/pdf-notes-for-ipad/id417200844)

Manage and annotate PDF files on your iPad with fast page turning and intuitive finger-writing. Easily import, organize, and share your notes with friends. Offers a seamless reading and editing experience.

**Highlights:** Fast page turning and content scanning, Intuitive finger-writing with zoom-in, Easy PDF import via Dropbox, Email, or iTunes, Organized bookshelves with search, Variety of pens, highlighters, and text notes, Export annotated PDFs via email

**Features:** Vision Pro support

**In-app purchases:** none


### ThinkWise

[App page](https://appshunter.io/ios/app/thinkwise/id6502587224)

Organize your thoughts and ideas with digital notes and mind maps. Facilitate group discussions and collaborative projects with easy sharing. Features AI-powered content generation and real-time translation.

**Highlights:** Digital notes, Mind maps, Group chat organization, Easy sharing, AI branch generation, Real-time translation

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

**In-app purchases:** none


## Frequently asked questions

### Is pdf free?

pdf costs $9.99, with no in-app purchases.

### Is ThinkWise free?

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

### Do pdf or ThinkWise have ads?

Neither pdf nor ThinkWise shows ads.

### Which is updated more often, pdf or ThinkWise?

pdf ships an update every 2 weeks, and ThinkWise every 7 months. Most recently, pdf was updated on June 10, 2026 and ThinkWise on September 25, 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.*