Comparison

PDF Reader Auto Scroll vs Soniclyze

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

Soniclyze

Transform your device into a professional sound measurement toolkit. Analyze audio files, measure sound levels, and inspect frequency responses with advanced algorithms. Offers free core features and a Pro version for expanded capabilities and reporting.

Highlights
  • Real-time spectrum analysis (FFT)
  • Sound level metering (SPL)
  • Audio file analysis
  • Feedback detection
  • Loudness and true-peak analysis
  • Signal generator
  • Report export (Pro)
Features
Read full description

Soniclyze turns your iPhone and iPad into a professional sound measurement toolkit — and the core is free. Measure SPL, analyze frequency response in real time, inspect audio files, detect feedback, and export clean reports. No external audio interface required. Algorithms are implemented with reference to IEC, ISO, ASTM, and ITU-R standards. For noise & environmental monitoring Long-duration sound level measurement with A/C/Z weighting and Fast/Slow/Impulse time constants. Full statistics: Leq, Lmax, Lmin, Lpeak, L10, L50, L90, and SEL. Adaptive noise-event detection logs each event's level, duration, and rise/fall rate. NIOSH/OSHA noise-exposure dose for occupational settings, and automatic zone-limit assessment per GB 3096-2008. If a call or Siri interrupts a measurement, Soniclyze pauses and marks the interrupted interval automatically, then lets you continue. For live sound engineers High-resolution real-time spectrum analysis (FFT up to 32768). Octave-band resolution from 1/1 to 1/24. Six window functions including Flat-Top for pure-tone amplitude work. Real-time feedback detection. Microphone sensitivity correction (via known mV/Pa spec, optional 94 dB reference calibrator). Five built-in industry reference room-correction target curves spanning cinema, broadcast, and home-theater traditions, plus A/B/C/D snapshot comparison for before/after tuning. For broadcast, podcast & mastering Loudness and true-peak analysis (Integrated / Short-term / Momentary LUFS, LRA, 4x oversampled true peak), with compliance checks against 11 industry loudness targets spanning broadcast (EBU R128, ATSC A/85), streaming, podcast, cinema, and CD mastering. Anomaly detection for DC offset, clipping, spectral notches, transcoding artifacts, and band limiting. Multi-band phase/polarity inversion analysis (8-band + full-band) and mono compatibility. Play and analyze at once: waveform, spectrum, and waterfall views stay in sync as you audition. Toolbox Signal generator, parametric EQ designer, FIR filter designer, acoustic calculators, and frequency-response export. Free & Pro Free includes real-time analysis (RTA), sound level metering (SPL), and audio file analysis. Pro unlocks advanced modules and PDF/CSV/JSON report export. Pro also syncs your measurement records across iPhone, iPad, and Mac through your own private iCloud database, with location data and the names you enter stored using end-to-end encryption. If your subscription lapses, that data stays in iCloud and becomes available again when you resubscribe. Pro includes a 7-day free trial. Supports 17 languages. Reports export independently of the app's display language. Measurement accuracy depends on your device's microphone and calibration; for legal metrology, use equipment certified to the relevant national standard. Privacy Policy: https://soniclyze.com/legal/privacy/ · Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

PDF Reader Auto Scroll4 screens
Soniclyze4 screens

Verdict

The call

The clearest difference is price: Soniclyze at Free against PDF Reader Auto Scroll's $9.99. Soniclyze also leads on rating (5.0 vs 4.5). PDF Reader Auto Scroll's advantage is in-app purchases (none vs 4) and iOS requirement (13.0 vs 18.0). On review sentiment, ratings volume, update cadence and ads 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

Soniclyze is free to download; PDF Reader Auto Scroll costs $9.99 up front. Soniclyze sells 4 in-app purchases, starting at $4.99 per month. PDF Reader Auto Scroll asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Soniclyze holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

PDF Reader Auto Scroll ships an update every 5 days, Soniclyze every 10 days. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

Scorecard5 real differences · 5 level
PDF Reader Auto Scroll versus Soniclyze: the parameters behind the verdict, then further details
ParameterPDF Reader Auto ScrollSoniclyze
Price$9.99Free — better
Rating4.5 (2 ratings)5.0 (1 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings2 — better1
Update frequencyEvery 5 days — betterEvery 10 days
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFreemium — better
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS13.0 — better18.0
Further details — not scored
Size1 MB42 MB
Age rating4+4+
DeveloperAbdulkarim Nasir雄伟 赵

Customer experience

PDF Reader Auto Scroll

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Soniclyze

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

PDF Reader Auto Scroll

No in-app purchases

4 purchases

Soniclyze

Subscriptions4
  • Professional Monthly7 Days trial$4.991 Month
  • Professional Yearly7 Days trial$49.991 Year
  • Enterprise Monthly$199.991 Month
Show 1 more
  • Enterprise Yearly$999.991 Year

Questions

Is PDF Reader Auto Scroll free?
PDF Reader Auto Scroll costs $9.99, with no in-app purchases.
Is Soniclyze free?
Soniclyze is free to download, with in-app purchases available.
Which has better reviews, PDF Reader Auto Scroll or Soniclyze?
Soniclyze is rated higher. PDF Reader Auto Scroll averages 4.5 out of 5 from 2 ratings, while Soniclyze averages 5.0 from 1 ratings.
Do PDF Reader Auto Scroll or Soniclyze have ads?
Neither PDF Reader Auto Scroll nor Soniclyze shows ads.
Which is updated more often, PDF Reader Auto Scroll or Soniclyze?
PDF Reader Auto Scroll ships an update every 5 days, and Soniclyze every 10 days. Most recently, PDF Reader Auto Scroll was updated on November 4, 2026 and Soniclyze on October 31, 2026.

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