PDF Reader – Reader & Editor by ora tools packs a lot into one Android app: viewing across PDF, Word, Excel, PowerPoint, and EPUB, a document scanner, annotation and signing, a PDF-to-image converter, and AI summarisation. Six million downloads say plenty of people use it. But the bundle depends on cloud AI calls, a paid tier gates most editing tools, and the developer footprint is small compared with the established PDF names below.
The seven PDF Reader alternatives below cover the same jobs (viewing, editing, scanning, converting) with vendors most people already trust from desktop or work. Two are fully open source. Two ship a full office suite. One is the standard-setter that every other PDF app is compared against.
Quick comparison
| App | Best for | Free plan | Starting price/mo | Standout feature |
|---|---|---|---|---|
| Adobe Acrobat Reader | Highest fidelity with any PDF | Yes, viewing and basic edits | Around $10 | Full Acrobat editing when you upgrade |
| Xodo PDF Reader & Editor | Free editing without paywalls | Yes, most features free | Around $10 (Pro) | Cloud sync across devices, real annotation |
| WPS Office | Full office suite with PDF built in | Yes, ad-supported | Around $3 | PDF, Word, Excel, PowerPoint in one app |
| Foxit PDF Editor | Serious PDF editing on mobile | 7-day trial | Around $10 | Desktop-grade editing with cloud connectors |
| PDF Reader by KDAN | Note-heavy PDF workflows | Yes, limited | Around $5 | Bookshelf view plus handwriting tools |
| Google PDF Viewer | Fastest possible viewer with no clutter | Fully free | Free | Ships with Android, zero setup |
| Librera Reader | EPUB plus PDF with total layout control | Fully free | Donation | Reads EPUB, MOBI, FB2, TXT alongside PDF |
Why people leave PDF Reader by ora tools
- AI summary needs a cloud call. Your document leaves the device. Many readers, especially in regulated jobs, need a viewer that never uploads.
- Editing is paywalled quickly. The scan and read features are free, but real editing (annotating, merging, compressing) pushes upgrade prompts.
- Ads inside a productivity tool. The free tier interrupts flow with interstitials.
- Small developer footprint. ora tools has one app and a GitHub Pages site. For a viewer that opens contracts, invoices, and IDs, most people prefer a name they already know from work.
- Feature overlap with Android itself. Google PDF Viewer opens PDFs from the Files app without any install. If a viewer is all you need, ora tools is doing extra.
Which PDF Reader alternative should you pick?
- Adobe Acrobat Reader for the highest fidelity with any PDF, especially forms.
- Xodo for editing that stays free without paywalls.
- WPS Office if you also need Word, Excel, and PowerPoint on mobile.
- Foxit PDF Editor for desktop-grade editing on a phone.
- PDF Reader by KDAN for study notes and handwriting.
- Google PDF Viewer for the lightest possible viewer.
- Librera Reader for EPUB and PDF in the same reader.
1. Adobe Acrobat Reader, highest fidelity with any PDF
Adobe wrote the PDF format, and Acrobat Reader is the reference implementation on mobile. It renders every PDF quirk correctly (forms, embedded fonts, digital signatures), handles fillable government and tax forms without breaking layout, and supports commenting, highlighting, and simple annotations for free.
Where it falls short: the interface has grown busy over the years, and full editing (merging, splitting, converting) needs an Acrobat subscription. The app footprint is heavy.
Pricing:
- Free: view, sign, comment, fill forms, simple annotations.
- Paid: Acrobat Standard from around $10 per month for editing, OCR, and conversion.
- vs PDF Reader by ora tools: the free tier alone matches ora tools on viewing and beats it on forms.
Migrating from PDF Reader by ora tools: install Acrobat, sign in with a free Adobe account, open the same file from your storage. Annotations you saved in ora tools live in the PDF itself and carry over.
Download: Aptoide · Google Play
Bottom line: the safest pick when compatibility and form fidelity matter.
2. Xodo PDF Reader and Editor, editing that stays free
Xodo is the app most people land on after leaving Acrobat. It reads, edits, annotates, merges, splits, signs, and fills forms in the free tier, syncs with Google Drive and Dropbox, and does not paywall the basics. Xodo is owned by Apryse, which also builds the SDK behind many enterprise PDF products.
Where it falls short: the free version shows a small Xodo Pro promo. Cloud storage integrations occasionally need a re-auth.
Pricing:
- Free: viewing, annotation, editing, merging, form filling.
- Paid: Pro from around $10 per month for cloud sync, offline access, and priority features.
- vs PDF Reader by ora tools: strictly more capable on the free tier.
Migrating from PDF Reader by ora tools: install Xodo, open your PDFs from the same folder or a linked cloud drive. Highlights and comments saved to the file carry over.
Download: Aptoide · Google Play
Bottom line: the best free PDF editor, full stop.
3. WPS Office, full office suite with PDF built in
WPS Office is a full office suite that treats PDFs as a first-class citizen. You get Word, Excel, and PowerPoint viewing and editing, a PDF reader and editor, cloud storage, and a document scanner. If you deal with a mix of file types (contracts as Word, quotes as Excel, PDFs of both), one app opens everything.
Where it falls short: the free tier shows ads. Some PDF export features and advanced editing sit behind Premium. WPS is owned by Kingsoft; some users prefer to keep Chinese-headquartered apps off work devices.
Pricing:
- Free: full office viewing and editing, ad-supported, basic PDF tools.
- Paid: Premium from around $3 per month.
- vs PDF Reader by ora tools: broader by category, similar in feel.
Migrating from PDF Reader by ora tools: install WPS, allow storage access, open your existing PDFs and office docs from the same folder.
Download: Aptoide · Google Play
Bottom line: the pick when a phone doubles as your travel office.
4. Foxit PDF Editor, desktop-grade editing on a phone
Foxit built its reputation as a lightweight Acrobat alternative on desktop, and the Android editor keeps that heritage. You can edit text and images inside PDFs, redact, add form fields, and connect to SharePoint, OneDrive, Google Drive, and Box. Rendering is fast even on very large files.
Where it falls short: the free tier is a 7-day trial. After that, editing needs a subscription. The full feature set is dense and takes time to learn.
Pricing:
- Free: 7-day trial with the full feature set.
- Paid: from around $10 per month on a yearly plan.
- vs PDF Reader by ora tools: pricier, but the editing capability is on a different level.
Migrating from PDF Reader by ora tools: install Foxit, activate the trial, connect your cloud drives, open the same PDFs.
Download: Aptoide · Google Play
Bottom line: the pick when the PDF editing on your phone has to hold up next to your desktop.
5. PDF Reader by KDAN, note-heavy PDF workflows
KDAN's PDF Reader targets students and researchers. It ships a Bookshelf view that groups PDFs like a library, freehand handwriting with palm rejection on stylus phones, a strong highlighting toolbar, and export to PDF or image with your annotations flattened. The interface leans clean rather than dense.
Where it falls short: the free tier caps some annotation tools and cloud sync. The paid tier is per-month rather than one-time.
Pricing:
- Free: viewing, basic annotations, bookshelf view.
- Paid: from around $5 per month.
- vs PDF Reader by ora tools: friendlier for study workflows, cleaner interface.
Migrating from PDF Reader by ora tools: install KDAN's app, import your PDFs into a shelf, restore or redo any handwritten annotations (they do not carry across apps).
Download: Aptoide · Google Play
Bottom line: the study pick when you annotate a lot and want a Bookshelf view.
6. Google PDF Viewer, lightest possible viewer
Google PDF Viewer is the invisible reader that lets Gmail preview PDF attachments and Drive open PDFs inline. It has no user interface of its own; it just renders when another app asks it to. If viewing is all you need, this is the smallest, fastest option, and it ships with almost every Android device.
Where it falls short: no editing, no annotation, no forms. It is a viewer and nothing else.
Pricing: Free, no ads, no upsell.
Migrating from PDF Reader by ora tools: uninstall ora tools and set Android's default PDF handler to Google PDF Viewer. Any PDF you open from Files, Gmail, or the browser will render immediately.
Download: Aptoide · Google Play
Bottom line: the answer when you realise all you actually needed was a viewer.
7. Librera Reader, EPUB and PDF in the same reader
Librera Reader treats PDFs, EPUBs, MOBIs, FB2s, and TXT files as one library. Layout control is unusually deep: custom margins, night mode, day mode, sepia mode, TTS reading aloud, and a bookshelf that scans your storage recursively. The Pro version drops ads and unlocks a few extras.
Where it falls short: not built for editing. If you need to fill a form or sign a contract, this is not the right tool.
Pricing:
- Free: viewing across all supported formats, ad-supported.
- Paid: Pro is a one-time donation for the ad-free build.
- vs PDF Reader by ora tools: wider format support, no cloud AI, no editor.
Migrating from PDF Reader by ora tools: install Librera, point it at your books folder, let it index. Bookmarks from PDF metadata carry over.
Download: Aptoide · Google Play
Bottom line: the reader for people who also read ebooks and want one app for everything.
How to choose
- Pick Adobe Acrobat Reader if your PDFs include forms, digital signatures, or unusual fonts.
- Pick Xodo for editing without paywalls.
- Pick WPS Office if you juggle Word, Excel, PowerPoint, and PDF on the same phone.
- Pick Foxit when you need desktop-grade editing on the go.
- Pick KDAN's PDF Reader for study notes and handwritten annotation.
- Pick Google PDF Viewer if all you actually needed was a viewer.
- Pick Librera Reader if you read ebooks alongside PDFs.
- Stay on PDF Reader by ora tools only if you specifically use its cloud AI summary and accept the trade-off of documents leaving the device.
FAQ
What is the best free PDF Reader alternative?
Xodo is the strongest free pick because it covers viewing, editing, annotation, and cloud sync without paywalls. Google PDF Viewer is the lightest option if you only need to read.
Can I edit a PDF for free on Android?
Yes. Xodo lets you add text, images, and annotations without an upgrade. Adobe Acrobat Reader's free tier includes signing and commenting. Full text editing usually needs a paid tier in any app.
Is Xodo better than PDF Reader by ora tools?
For most people yes, because Xodo does not paywall basic editing or route documents through a cloud AI. If you specifically want AI summarisation and do not mind the cloud call, ora tools has that built in.
Which PDF alternative works offline?
All of them read offline. Google PDF Viewer, Librera Reader, Xodo, and Foxit work fully offline once the document is on the device. AI features in ora tools do not work offline.
Can I import my bookmarks and highlights from PDF Reader by ora tools?
Highlights and comments saved into the PDF itself carry over to any other reader. App-specific bookmarks and shelves do not migrate; they need to be rebuilt in the new app.
Which PDF alternative is best for students?
KDAN's PDF Reader for its bookshelf and handwriting tools, or Librera Reader if your reading spans PDFs and EPUB textbooks. Both are lighter on the phone than Foxit or Acrobat.
