Comparison

DocReader vs OpenViewer

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

Head to head
About

DocReader

This app allows you to read PDFs and EPUBs offline, with a text-to-speech feature that reads content aloud. It offers customizable reading settings and supports various file formats, keeping your library local.

Highlights
  • Offline PDF and EPUB reading
  • Text-to-speech with highlighting
  • Customizable reading comfort settings
  • Local library management
  • Support for various file formats
  • On-device OCR for scanned PDFs
Features
Read full description

DOCREADER — READ PDFS & EPUBS, LISTEN OFFLINE, KEEP YOUR LIBRARY LOCAL DocReader is a full-featured reader for study, work, and leisure: open PDFs and EPUBs from your device, resume where you stopped, and switch to read-aloud with highlighting when your eyes need a rest. Reading and listening with system or offline voices is free—no account needed. READ-ALOUD & VOICES Start, pause, or stop from the toolbar; highlighting follows speech where content supports it. Skip chosen headings or lines in manuals and reference EPUBs. • System TTS: built-in voices, no download. • Kokoro offline voices (Sherpa ONNX): natural speech from an optional pack, synthesized on-device. • Supertonic: an optional pack for very fast on-device speech—great for long documents and cooler phones. Adjust rate and speaker, or keep the screen awake during playback. READING COMFORT Light, dark, or system theme, with a PDF dark mode tuned for legibility. Set default PDF and EPUB scale (fit page, fit width, and more) and scroll speed. In-document panels keep theme, fonts, and voice settings a tap away. LIBRARY & FORMATS Recent documents with timestamps on the home screen. Open files through the system picker, and DocReader remembers your last page or section. Beyond PDF and EPUB, open Markdown, text, logs, subtitles, JSON, CSV, source code, HTML, and common images. SCANNED PDFS / OCR When a PDF has no text layer, on-device OCR recovers text for reading and read-aloud, without sending page images to a cloud OCR service. PROJECT GUTENBERG Browse and download public-domain titles when online; they join your library for offline reading and listening. DOCREADER PREMIUM (OPTIONAL SUBSCRIPTION) Everything above is free. A subscription adds: • Background listening: keep reading aloud with the screen off or in other apps • Premium cloud voices: natural, expressive voices from leading speech providers • Sync: your books (1 GB of cloud storage) and reading progress on every device signed in to your account • Monthly credits for premium voices, used by how much you listen Subscribing requires a free DocReader account. Your plan and credits are shared across your devices. AVAILABLE PLANS • Lite: USD 4.99 / month, 2,500 credits each month • Pro: USD 14.99 / month, 7,500 credits each month Credit packs (one-time purchases for subscribers; credits never expire): • 2,500 credits: USD 4.99 • 10,000 credits: USD 19.99 Prices may vary by country and are shown in your local currency before you buy. SUBSCRIPTION TERMS • Payment is charged to your Apple Account when you confirm the purchase. • Subscriptions renew automatically at the same price unless cancelled at least 24 hours before the current period ends. Your account is charged for renewal within 24 hours before the period ends. • Manage or cancel anytime in your App Store account settings. Cancelling stops the next renewal; your plan stays active until the period ends. • Unused monthly credits expire at the end of each period. TERMS & PRIVACY Terms of Use: https://docreaderapp.blogspot.com/2026/04/docreader-terms-and-conditions-of-use.html Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://docreaderapp.blogspot.com/2026/04/docreader-privacy-policy.html Your library, preferences, and reading positions stay on your device unless you subscribe and sync. The network is used only for features you choose: Gutenberg, voice-pack downloads, cloud voices (the text being read is sent to the speech provider), and sync. SUPPORT Questions or bugs: 2asoftwaredevelopers@gmail.com or reach us through the contact us page in the app.

About

OpenViewer

Features
Read full description

OpenViewer is a lightweight viewer for all standard document formats. [Supported formats] PDF · HWP · DOCX · XLSX · PPTX · EPUB · TXT · Images [Key features] • Fast launch • Dark mode • Recent files + favorites • 100% on-device processing • Native HWP support for Korean documents [Why OpenViewer?] - No in-app purchases - No account required - Ad-supported (no ads inside viewer) - English, Korean, Japanese UI Contact: wowpia0127@gmail.com

Screenshots

DocReader4 screens
OpenViewer4 screens

Verdict

The call

The clearest difference is ads: DocReader at none against OpenViewer's shown. DocReader also leads on update cadence (every 3 weeks vs every 2 months). On price, in-app purchases, device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

DocReader ships an update every 3 weeks, OpenViewer every 2 months. The most recent releases landed on October 22, 2026 and October 2, 2026 respectively.

Scorecard2 real differences · 7 level
DocReader versus OpenViewer: the parameters behind the verdict, then further details
ParameterDocReaderOpenViewer
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS16.415.1 — better
Further details — not scored
Size124 MB41 MB
Age rating4+4+
DeveloperEmmanuel AdooliBongJun Park

In-app purchases

None

DocReader

No in-app purchases

None

OpenViewer

No in-app purchases

Questions

Is DocReader free?
DocReader is free to download, with no in-app purchases.
Is OpenViewer free?
OpenViewer is free to download, with no in-app purchases.
Do DocReader or OpenViewer have ads?
OpenViewer shows ads; DocReader does not.
Which is updated more often, DocReader or OpenViewer?
DocReader ships an update every 3 weeks, and OpenViewer every 2 months. Most recently, DocReader was updated on October 22, 2026 and OpenViewer on October 2, 2026.

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