Comparison

Flash Reader vs Knowix, LLC

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

Head to head
About

Flash Reader

Enhance your reading speed and comprehension with this app. It presents text one word at a time, in chunks, or as a traditional reader, allowing you to adjust speed and track progress. Supports various file types and offers a free tier with an optional Pro upgrade.

Highlights
  • Word-by-word reading mode
  • Chunk reading mode
  • Traditional reader mode
  • Adjustable reading speed
  • Supports PDFs, EPUBs, Word files
  • Camera scanning for text
  • Siri integration
Features
Read full description

Flash Reader is back, and better than ever. It read you one word at a time years before that was a trend. On the App Store since 2010, rebuilt from scratch for version 4, and everything happens on your device. Paste it, share it from any app, open a PDF, EPUB or Word file, or point the camera at a page, and you're reading. Every document keeps your place, and a widget, Control Center or Siri takes you straight back in. THREE WAYS TO READ • Flash: one word, one spot, and the pages fly. One letter in red holds your eye. • Chunk: a few words at a time, for when you would rather stroll. • Reader: the whole text, for a look back. Tap to pause. Play picks the sentence back up, so you never lose the thread. SPEED, WITH RECEIPTS Understanding holds to about 350 words a minute, then it slips. Flash Reader starts you at 250, a colored chip names your zone, and your real speed counts the pauses too. Go faster whenever you like; the chip tells you what it costs. Little words pass quickly, long or rare ones get a beat more, and a full stop gets its pause. Rest breaks when you want them. READ ANYTHING, START ANYWHERE • Copy anything, anywhere. Tap the clipboard chip, or the button in Control Center, and it flashes. • Share text, a web page or a link from any app: articles, mail, messages, notes. • Open PDF, EPUB, Word and text files from the Files app. • Point the camera at a page, or pick a photo or a screenshot. The text is read on your device. • Drop in a link and get the article, with none of the clutter around it. • Say "Flash my clipboard" or "Resume reading" and Siri does the rest. • Every document keeps its place, its mode and its speed. • Search, sort and rename. Deleted documents wait in Recently deleted. BACK IN ONE TAP Continue Reading and Streak widgets for the Home and Lock Screens. Flash clipboard and Resume reading in Control Center. Stats keep words read today, your streak and your real speed, pauses and all. ROOM TO READ Four themes (Paper, Ink, Sepia and High Contrast), a choice of fonts, an adjustable word size, and reading in landscape. On iPad, the library sits beside the reading view and a keyboard drives both. Designed for iPhone Duo: open it and the page unfolds beside the words. The whole app speaks 50 languages. FREE AND PRO Free to start. Text you paste, copy or share reads free, forever, at full quality: every mode, every speed, every theme, links, TXT and Markdown files, and three documents on the shelf at a time. Pro opens PDF, EPUB, Word, RTF and HTML files, scans and photos, and an unlimited shelf. One purchase covers iPhone and iPad, and your library and your place travel between them through your own iCloud. Choose Pro by the year with a 14-day free trial, by the month, or pay once and keep it. Annual and monthly Pro renew automatically until cancelled in your Apple Account settings, at least 24 hours before the period ends. No account. No ads. No analytics and no tracking. COMING BACK? Your books, your speed and your bookmark come along from the old version. If you bought Pro inside Flash Reader before, it is still yours: Restore purchases in Settings brings it back on any device. If you bought the separate Flash Reader Pro app, write to us and we will sort it out. More formats and modes are coming as free updates. Flash Reader 4 needs iOS 26 or later. On an older iPhone or iPad, the App Store keeps offering the last version that runs there. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy: https://flashreaderapp.com/privacy Questions: support@flashreaderapp.com

About

Knowix, LLC

Features
Read full description

We deliver actionable data that improve safety, reduce operational costs, and drive system-wide improvements. Knowix’s patented technology enables the collection of in-use data which in conjunction with its patent pending software and analytics provide actionable insights. We deliver real-time measurements, asset status, location services providing unparalleled situational awareness. Knowix’s technology is highly modular and scalable which allows solutions to be tailored to market and end-user needs. Knowix empowers users; Stop modeling, Start KnowingTM.

Screenshots

Flash Reader4 screens
Knowix, LLC4 screens

Verdict

The call

The clearest difference is in-app purchases: Knowix, LLC at none against Flash Reader's 10. Knowix, LLC also leads on iOS requirement (13.0 vs 26.0). On price, update cadence, ads 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

Both are free to download. Flash Reader sells 9 in-app purchases, starting at $4.99 per month. Knowix, LLC asks for nothing beyond the download.

UpkeepUpdate frequency

Flash Reader ships an update every 6 weeks, Knowix, LLC every 3 months. The most recent releases landed on November 13, 2026 and November 7, 2026 respectively.

Scorecard2 real differences · 8 level
Flash Reader versus Knowix, LLC: the parameters behind the verdict, then further details
ParameterFlash ReaderKnowix, LLC
PriceFreeFree
Rating4.2 (164 ratings) — better—
Positive reviews49.3% of reviews—
Number of ratings164 — better—
Update frequencyEvery 6 weeks — betterEvery 3 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS26.013.0 — better
Further details — not scored
Size23 MB43 MB
Age rating4+4+
DeveloperDidstopiaKnowix, LLC

Bugs and requests

Flash Reader

Reported bugs

5 issues
  • Login screen freezes
  • Incompatible with older devices
  • Crashes when switching modes
  • Loses reading progress
  • Inaccurate resume times

Requested features

10 requests
  • Fancy text like newer video captions
  • Bookmarks and navigation
  • Support for Google Drive
  • Quick rewind option
  • Table of contents
Show 5 more
  • Search option
  • Ability to go backward/forward
  • Choose page to go to
  • Dark mode
  • Advanced analytics dashboard

Knowix, LLC

Not enough reviews yet to summarise bugs or requests.

In-app purchases

9 purchases

Flash Reader

Subscriptions2
  • Pro Monthly$4.991 Month
  • Pro Annual14 Days trial$29.991 Year
One-time7
  • Flash Reader Pro$0.99
  • Flash Reader Pro2 variants$1.99
  • Flash Reader Pro$2.99
Show 4 more
  • Flash Reader Pro$3.99
  • Flash Reader Pro$4.99
  • Pro Lifetime$39.99
  • Pro Lifetime$79.99
None

Knowix, LLC

No in-app purchases

Questions

Is Flash Reader free?
Flash Reader is free to download, with in-app purchases available.
Is Knowix, LLC free?
Knowix, LLC is free to download, with no in-app purchases.
Do Flash Reader or Knowix, LLC have ads?
Neither Flash Reader nor Knowix, LLC shows ads.
Which is updated more often, Flash Reader or Knowix, LLC?
Flash Reader ships an update every 6 weeks, and Knowix, LLC every 3 months. Most recently, Flash Reader was updated on November 13, 2026 and Knowix, LLC on November 7, 2026.

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