PDF AutoScroll vs Trimly
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PDF AutoScroll
This app allows hands-free reading of documents, research papers, and sheet music with smooth auto-scrolling. It offers precise speed control, search, highlights, bookmarks, and dark mode for an enhanced reading experience.
- Smooth auto-scroll with speed control
- Search, highlights, and bookmarks
- Dark Mode for reading
- Last-position restore
- Page margin trimming
- Side-by-side PDF reading
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Hands off. Just read. With a single tap, smooth auto-scroll begins. From research papers, textbooks, and documents to sheet music, stay focused on reading. Keep your hands on your instrument and your eyes on the score. Read, rehearse, or present at your own pace with PDF AutoScroll. Key Features (Included) All listed features are included with your app purchase. No additional purchase or subscription is required. • Smooth auto-scroll, precise speed control, and up/down direction • Search, highlights, bookmarks, table of contents, and Dark Mode • Recent PDFs, favorite folders, and last-position restore • A different speed for each page and a start delay • Page margin trimming • Repeat, next-PDF playback, and saved PDF lists • Side-by-side PDF reading on iPad and Mac Privacy • No account required. Your PDF files are read on your device. Device Support • iPhone, iPad, Mac • App and setup guide in 32 languages [Get started] Open a PDF, tap Play, and adjust the speed. Pause whenever you want. Notes Margin trimming changes only the reading view. Your original PDF and shared file stay unchanged. - Contact: help@paran.app - Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ - Privacy Policy: https://paran.app/privacy-policy/
Trimly
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PDF pages with wide white margins that make the text tiny on your iPhone or e-reader? Trimly finds the content on every page and crops away the empty margins, so pages fill the screen and print without wasted space. Select a PDF, set how much margin to keep, and tap Crop Margins. Trimly checks each page, trims the blank edges and gives you a new PDF to share or save to Files. • AUTOMATIC CONTENT DETECTION — each page is scanned for text, images and lines; faint scanner specks and near-white noise are ignored. • KEEP A LITTLE MARGIN — a slider keeps 0–40 points of breathing room around the content so nothing is cut flush. • SAME CROP ON EVERY PAGE — optionally apply one shared crop to all pages for a uniform page size, or let each page crop to its own content. • LOSSLESS AND SHARP — pages are re-drawn from the original vector content, not turned into images, so text stays crisp and searchable. • LINKS AND BOOKMARKS KEPT — links are moved with the cropped content and the bookmark outline is carried over. • PAGE PREVIEW — see thumbnails of every page before you crop. Honest scope: Trimly crops only white or near-white margins automatically — there is no manual crop box, and colored or gray page backgrounds (common on scans) may not be trimmed. Password-protected PDFs must be unlocked first. PDFs up to 200 pages and 80 MB are supported. Your original file is never changed. Everything happens on your iPhone. Nothing is uploaded and no account is needed. Try it free — 3 PDFs. A one-time $4.99 purchase unlocks unlimited PDFs and batch cropping — pick up to 50 PDFs at once. No subscription, no ads. Questions: overlapmarr@gmail.com
Screenshots
Verdict
The clearest difference is price: Trimly at Free against PDF AutoScroll's $5.49. Trimly also leads on update cadence (every 2 days vs every 2 weeks). PDF AutoScroll's advantage is in-app purchases (none vs 1) and device support (3 vs 1). On ads 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
Trimly is free to download; PDF AutoScroll costs $5.49 up front. Trimly sells 1 one-off in-app purchase. PDF AutoScroll asks for nothing beyond the download.
PDF AutoScroll ships an update every 2 weeks, Trimly every 2 days. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.
| Parameter | PDF AutoScroll | Trimly |
|---|---|---|
| Price | $5.49 | Free — better |
| Rating | 4.3 (7 ratings) — better | — |
| Positive reviews | 55.6% of reviews | — |
| Number of ratings | 7 — better | — |
| Update frequency | Every 2 weeks | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad, Mac — better | iPhone |
| Requires iOS | 16.6 | 16.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Paran | Jhomar Maravillas |
In-app purchases
PDF AutoScroll
No in-app purchases
Trimly
- Unlock Unlimited$4.99









