Comparison

PDF Reader Auto Scroll vs Echorooms

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

PDF Reader Auto Scroll

This utility app offers hands-free reading of PDF documents with customizable automatic page scrolling. It allows users to manage files, adjust scroll speed and direction, and maintain reading progress without manual interaction.

Highlights
  • Automatic page scrolling
  • Adjustable scroll speed and direction
  • Hands-free reading
  • PDF file management
  • Night mode
  • Resume reading progress
Features
Read full description

A small size PDF reader to view and manage your PDF files and books. Have you ever wondered if there was a PDF app where pages can scroll automatically? This is that app. This PDF reader - Auto-Scroll app will help you read books easily. You can easily view charts and view PDF files easily. Features in this PDF autoscroll App * Helping you reading without touching your phone * Manage your PDF files and books in one place. * Night Mode for better reading. * A special feature where on a button click, pages will scroll automatically. * Change autoscroll direction (scroll either up or down) * Manually scroll to a location and start autoscroll from there * Reopen last opened document and restore autoscroll from where you left off. * Select the characters for web searching * Open links in your pdfs externally in safari etc * Change auto scroll speed according to your preference. * Recent pdf on top of the list for easy access. * Scan your device for PDF files. * Search feature to search for PDF files easily. * Minimalist design approach. No fancy stuff. App just does what it says. * Simple and light pdf reader * It makes reading more efficient for you. By reading hands free with adjustable auto-scroll and reduced eye strain with dark mode. * Automatically bookmark the book or document, you are reading. * Show page numbers count as you scroll * You can restart auto scroll when end of pdf document is reached * Vertical auto-scrolling with adjustable speed, whose speed number/label you can see and gauge, so you can figure out your optimal speed for unique PDFs and quickly change to it instead of guessing what that speed is on a blind slider per PDF * Without any account login * None of your data is collected by using this app. * Horizontal lock: so if you must zoom in to hide margins, but then have to pan around from time to time during the auto-scrolling process, your document isn't gonna fly around horizontally as well and would only move vertically * Be able to scroll around with one finger while it's auto-scrolling, after which it resumes auto-scrolling * No conversion is made to your PDF, just pure scrolling! * Keep the screen awake without touching * No Ads in this app or annoying pop-ups. How to use: 1. Open the app 2. Click the + button on top-right corner to go to your device files folder. Select any pdf that's on your device 3. Click the switch on top-right to enjoy the auto scrolling of that pdf and more! 4. To pause the autoscroll, turn off the switch on top-right. 5. To resume autoscroll, re-enable the switch. 6. To change pdf, click the + button again and select a different one. Please tell your friends about this app! Send feedback and feature request to kareemtkb@gmail.com Disclaimer: By using this app, you agree to view only PDFs you're authorized or have the right to view.

About

Echorooms

Features
Read full description

Repeatability Desk groups baseline and follow-up readings with room, position and equipment context. Compare medians and observed spread while keeping exclusions and missing band fits visible. HOW TO USE THE UPGRADE 1. Capture repeated readings with consistent placement and conditions, or inspect clearly labeled examples. Open Desk and identify the session. 2. Add baseline and follow-up readings. Include at least three readings per group for summaries; record a reason for each exclusion. 3. Review medians and observed ranges, save the session and export the CSV with every included and excluded reading. Room capture, saved reading history, detail views, comparison and acoustic planning references remain. Missing band data is no longer filled with synthetic values in measurement reports. WHAT TO KNOW Three to 12 included readings per group for summaries; up to 50 sessions. Band medians need at least three actual band fits. Observed spread is not a confidence interval or proof that treatment caused a change. Device microphones, placement and ambient conditions affect results. Simulator and example readings are labeled and are not acoustic measurements. Envelope contrast is estimated from the capture, not a calibrated independent noise floor or ISO compliance check. iPhone and iPad. No account required.

Screenshots

PDF Reader Auto Scroll4 screens
Echorooms3 screens

Verdict

The call

The clearest difference is price: Echorooms at $2.99 against PDF Reader Auto Scroll's $9.99. PDF Reader Auto Scroll's advantage is iOS requirement (13.0 vs 17.0). On update cadence, ads, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

PDF Reader Auto Scroll costs $9.99 and Echorooms $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

PDF Reader Auto Scroll ships an update every 5 days, Echorooms every 6 days. The most recent releases landed on September 30, 2026 and September 21, 2026 respectively.

Scorecard2 real differences · 8 level
PDF Reader Auto Scroll versus Echorooms: the parameters behind the verdict, then further details
ParameterPDF Reader Auto ScrollEchorooms
Price$9.99$2.99 — better
Rating4.5 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 5 days — betterEvery 6 days
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better17.0
Further details — not scored
Size1 MB2 MB
Age rating4+4+
DeveloperAbdulkarim NasirRobert Corbin

In-app purchases

None

PDF Reader Auto Scroll

No in-app purchases

None

Echorooms

No in-app purchases

Questions

Is PDF Reader Auto Scroll free?
PDF Reader Auto Scroll costs $9.99, with no in-app purchases.
Is Echorooms free?
Echorooms costs $2.99, with no in-app purchases.
Do PDF Reader Auto Scroll or Echorooms have ads?
Neither PDF Reader Auto Scroll nor Echorooms shows ads.
Which is updated more often, PDF Reader Auto Scroll or Echorooms?
PDF Reader Auto Scroll ships an update every 5 days, and Echorooms every 6 days. Most recently, PDF Reader Auto Scroll was updated on September 30, 2026 and Echorooms on September 21, 2026.

Other comparisons