Outliner vs PDF Indexer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Outliner
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.
- Multi-functional outliner
- Add detailed notes
- Dynamic design
- Quick search
- Mark as complete
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Scroll - Outliner for Notes, Lists & To-Dos Scroll is a modern outliner that turns scattered thoughts into a clear, structured record of everything on your mind. Notes, checklists, to-dos, plans, and ideas - all in one app, organized exactly the way you think. Most notes apps force you to choose: a quick list here, a long-form note there, a to-do app somewhere else. Scroll brings them together. Nest your notes as deep as an idea needs to go, collapse what you're not working on, and keep a precise, detailed record of your thinking without ever leaving the app. WHY YOU'LL LOVE SCROLL - Infinite outlining - Break any idea down into sub-points, then sub-points of those. Add as much detail as you want and keep it all neatly organized. - Everything in one place - Replace your notes, lists, and to-do apps with a single dynamic workspace that adapts to whatever you're capturing. - Instant search - Jump straight to the exact note you're looking for and start writing in seconds. No scrolling, no folders to dig through. - Track your progress - Mark items complete or cross them off to see what's done and what's left at a glance. - Built for focus - A clean, dynamic design that gets out of your way so you can think clearly and write freely. Subscription terms: - The subscription auto-renews at the end of each term. - Payment will be charged to iTunes Account at confirmation of purchase. - The subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. - Account will be charged for renewal within 24-hours prior to the end of the current period. - You may manage your subscription and turn off auto-renewal by going to your Account Settings after purchase. Privacy policy and Terms of Use: https://applorium.com/privacy-scroll
PDF Indexer
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.
- 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
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PDF Indexer turns a separate title-to-page mapping into fast navigation for a PDF. Choose a PDF, add its index, and search titles across your library. On import, the app divides the PDF into private on-device sections at indexed title pages and removes its temporary full-size copy. A result opens only the matching section at the mapped PDF page. Page offsets handle documents whose printed page numbers do not match their PDF positions. Import mappings from CSV, JSON, XLSX, pasted text, or manual entry. Review validation warnings before saving, correct individual rows later, replace a mapping without copying the PDF again, and export a mapping as CSV or JSON. PDF Indexer is local-first. It needs no account and has no publisher-operated analytics or app-run cloud service. Your app library stays in private device storage unless you choose to export a mapping. The free app may show non-personalized banner ads after any required privacy choices. PDFs, mappings, titles, and searches are not sent to the ad service. See the Privacy Policy for operating-system backup details. Highlights: • Search across multiple indexed PDFs • Exact, prefix, substring, and alias matching • Jump directly to mapped pages • CSV, JSON, XLSX, pasted-text, and manual mapping input • Page-offset calibration and bounds validation • Mapping correction, replacement, and export • Missing-file recovery without losing the mapping • Light and dark appearance PDFs and mappings are supplied by the user. PDF Indexer does not include third-party books or indexes.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Outliner | PDF Indexer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (66 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 77.1% of reviews | — |
| Number of ratings | 66 — better | 2 |
| Update frequency | Every 2 months | Every 2 days — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 8 MB | 53 MB |
| Age rating | 4+ | 4+ |
| Developer | Applorium Ltd | MATTHEW BYONG BAE |
Customer experience
Outliner
PDF Indexer
In-app purchases
Outliner
- Monthly Subscription$3.991 Month
- Yearly Subscription3 Days trial$9.991 Year
- Scroll Premium$19.99
PDF Indexer
No in-app purchases









