# Highlights vs SYNKA clip

The clearest difference is in-app purchases: SYNKA clip at none against Highlights's 3. SYNKA clip also leads on update cadence (daily vs fortnightly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Highlights sells 3 in-app purchases, starting at $4.99 per month. SYNKA clip asks for nothing beyond the download.

Highlights ships an update fortnightly, SYNKA clip daily. The most recent releases landed on October 21, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Highlights | SYNKA clip |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (1.6K ratings)](https://appshunter.io/ios/app/highlights-pdf-reader-and-notes/id1498912833/reviews)** | — |
| Number of ratings | **1.6K** | — |
| Positive reviews | 53.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Daily** |
| Monetization | Freemium | — |
| Size | 37 MB | 17 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jonas Myren Ribe](https://appshunter.io/developer/794854096) | [ショーラボ株式会社](https://appshunter.io/developer/1838289963) |

## What reviewers say

### Highlights

[App page](https://appshunter.io/ios/app/highlights-pdf-reader-and-notes/id1498912833)

This app is a fast and lightweight PDF reader designed for research. It allows users to read, highlight, and annotate documents, and then extract this information into organized notes. Advanced features include table data extraction, text recognition, and smart copying of annotations into various formats.

**Highlights:** Read and browse PDF documents, Highlight, underline, and strikethrough text, Add comments and sticky notes, Extract annotations into organized notes, Convert table data and recognize text, Smart copy annotations to various formats (CSV, BibTex), Lookup citation metadata and DOI links

**Features:** Family Sharing, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Highlights Pro: Monthly | $4.99 | per month |
| Highlights Pro | $29.99 | per year |
| Highlights Pro: Legacy Upgrade | $29.99 | per year |

**What reviewers like**

- 🚀 Great for highlighting and annotating PDFs
- 🔍 Effective for research and note-taking
- 📚 Useful for academic and professional work
- 👍 Clean and intuitive user interface
- 🔗 Good integration with other apps and cloud storage

**What reviewers complain about**

- 💰 Subscription model is too expensive
- 🐛 Frequent crashes and bugs
- 🔍 Limited search functionality
- 🔒 Lack of customization options
- 🔧 Poor customer support and unresponsive developers

**Reported bugs**

- Highlights and annotations randomly disappearing
- Text selection issues, especially with footnotes
- Compatibility problems with certain PDF files
- Syncing issues across devices
- Export functionality not working as expected

**Requested features**

- Add handwriting and freeform annotation support
- Implement a table of contents or bookmarking feature
- Allow editing of notes directly in the app
- Provide a one-time purchase option instead of subscription
- Improve search capabilities with visual results and navigation


### SYNKA clip

[App page](https://appshunter.io/ios/app/synka-clip/id6775678902)

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

**In-app purchases:** none


## Frequently asked questions

### Is Highlights free?

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

### Is SYNKA clip free?

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

### Do Highlights or SYNKA clip have ads?

Neither Highlights nor SYNKA clip shows ads.

### Which is updated more often, Highlights or SYNKA clip?

Highlights ships an update fortnightly, and SYNKA clip daily. Most recently, Highlights was updated on October 21, 2026 and SYNKA clip on October 6, 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.*