# Outliner vs PDF Indexer

The clearest difference is in-app purchases: PDF Indexer at none against Outliner's 3. PDF Indexer also leads on update cadence (every 2 days vs every 2 months) and rating (5.0 vs 4.7). Outliner's advantage is ads (none vs shown) and ratings volume (66 vs 2). On price and iOS requirement there is nothing between them.

Both are free to download. Outliner sells 3 in-app purchases, starting at $3.99 per month. PDF Indexer asks for nothing beyond the download.

PDF Indexer holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Outliner has 66 ratings behind it against 2, so its average is the more settled of the two.

Outliner ships an update every 2 months, PDF Indexer every 2 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Outliner | PDF Indexer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (66 ratings)](https://appshunter.io/ios/app/outliner-scroll/id1597619594/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/pdf-indexer/id6799589624/reviews)** |
| Number of ratings | **66** | 2 |
| Positive reviews | 77.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 2 days** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 8 MB | 53 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Applorium Ltd](https://appshunter.io/developer/1688522804) | [MATTHEW BYONG BAE](https://appshunter.io/developer/6776132813) |

## What reviewers say

### Outliner

[App page](https://appshunter.io/ios/app/outliner-scroll/id1597619594)

Organize your notes, lists, and to-dos with a powerful outliner. Add rich detail to your thoughts and keep everything in one dynamic place. Quickly find and manage your entries with intuitive search and completion features.

**Highlights:** Multi-functional outliner, Add detailed notes, Dynamic design, Quick search, Mark as complete

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $3.99 | per month |
| Yearly Subscription | $9.99 | per year |
| Scroll Premium | $19.99 | one-time |


### PDF Indexer

[App page](https://appshunter.io/ios/app/pdf-indexer/id6799589624)

This app creates fast navigation for PDFs by turning title-to-page mappings into searchable indexes. It allows you to import mappings from various file formats and opens directly to the mapped page within the PDF. All data is stored locally on your device for privacy.

**Highlights:** Search across multiple indexed PDFs, Exact, prefix, substring, and alias matching, Jump directly to mapped pages, Import mappings from CSV, JSON, XLSX, and text, Page-offset calibration, Mapping correction and export, Local-first data storage

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

**In-app purchases:** none


## Frequently asked questions

### Is Outliner free?

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

### Is PDF Indexer free?

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

### Which has better reviews, Outliner or PDF Indexer?

PDF Indexer is rated higher. Outliner averages 4.7 out of 5 from 66 ratings, while PDF Indexer averages 5.0 from 2 ratings.

### Do Outliner or PDF Indexer have ads?

PDF Indexer shows ads; Outliner does not.

### Which is updated more often, Outliner or PDF Indexer?

Outliner ships an update every 2 months, and PDF Indexer every 2 days. Most recently, Outliner was updated on November 3, 2026 and PDF Indexer on October 31, 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.*