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Compare ScanLens, CamScanner, Adobe Scan, OneDrive, and Apple Notes by document storage, text recognition, and the PDF workflow you need.
Disclosure: We make ScanLens. Recommendations below reflect documented workflows and our product knowledge; they are not an independent benchmark of image quality or OCR accuracy. Sources were reviewed on October 6, 2026. App features and purchase options can vary by version and region.
Write down the destination and output you need before choosing a scanner. A PDF attachment is different from a shared link. Search inside an app is different from a text layer that travels with the PDF. Cloud upload is different from where OCR runs.
For a broader shortlist, see seven iPhone scanner options. For workflows available without payment, see the free scanner comparison. The matrix below covers five commonly compared workflows without assigning unsupported quality scores.
If you already use Scanner Pro, review ScanLens vs Scanner Pro before changing how your library, OCR, and exported files are handled.
| Requirement | ScanLens | Adobe Scan | OneDrive | Notes / Files | CamScanner |
|---|---|---|---|---|---|
| Where the document goes | Local library; optional backup and cloud export | Adobe cloud storage; copies can be shared to other apps | Selected OneDrive location | A note or selected Files folder | Check the account, storage, and sharing settings |
| Text recognition | On-device OCR; searchable PDF tools | Text recognition; document-length limits apply | Do not infer scanner OCR from cloud search | Notes can search scans; test the exported PDF | Check the required recognition and export workflow |
| Free output | First three pages unlocked; ScanLens branding | Free scan/PDF workflow; additional tools vary by plan | Account/cloud destination | Built-in multi-page scan and Markup | Check current free export terms |
| Work beyond scanning | Merge, split, sign, protect, and organize PDFs | Continue in Acrobat; some tools require a purchase | File storage and sharing in OneDrive | Markup signature and built-in file handling | Verify the tools and platforms you use |
| Offline requirement | Test local capture, OCR, and PDF export | Test capture separately from cloud saving and sync | Destination depends on OneDrive access | Choose a local folder and test reopening | Test each required feature without a connection |
The matrix describes documented workflows and checks to perform. It does not measure OCR accuracy, handwriting coverage, security, or processing speed. A missing verified claim is not a “No” score.
Apple documents scanning, saving from Files, and adding a signature in Notes. A dedicated scanner is useful when you repeatedly manage a library or need additional PDF operations. Apple scanning guide. Read ScanLens vs Apple Notes and the built-in scanning steps.
ScanLens performs scanning and OCR on the device. Cloud backup and linked accounts are optional. Purchases, diagnostics, account data, and document metadata are handled as described in our Privacy Policy. On-device document processing does not mean the app collects no data.
Adobe documents cloud storage and sharing a copy of a scan with other apps. Its text recognition limit depends on document length and subscription. Confirm the destination and complete PDF before choosing. Adobe Scan FAQ, export documentation, and OCR limits. Read ScanLens vs Adobe Scan.
Microsoft recommends OneDrive after retiring Lens and says its scanner cannot save locally on the device. If local files matter, capture with a scanner that exports to Files, then upload the copy. Microsoft guidance. Preserve old files with the Microsoft Lens migration guide.
CamScanner’s listing includes advertising, purchases, and developer-reported privacy practices. Test the export you need rather than assuming every feature uses the same storage or recognition method. CamScanner App Store listing. Read ScanLens vs CamScanner and the source-based safety review.
Prepare one non-sensitive two-page sample with small print, a date, a reference number, and a total. Keep lighting and framing similar. The following checks make a comparison useful for your own workflow; no measured results are claimed here.
| Check | What to inspect | Why it affects the choice |
|---|---|---|
| Capture | Edges, small print, glare, page order | A readable image is the foundation for both sharing and OCR |
| Export | Page count, branding, file size, destination | An in-app preview does not confirm the recipient’s file |
| Searchable PDF | Find the reference number in another PDF reader | Search inside a scanner does not guarantee portable text |
| Copied text | Compare totals and one paragraph with the source | Recognition mistakes can change important details |
| Offline access | Close the app and reopen a local copy without a connection | A synced preview and a usable local file are different |
| Repeat workflow | Rename, file, and send a second sample | Repeated tasks reveal steps that a feature checklist misses |
If you publish a benchmark, include app versions, document samples, settings, and the actual results. For your own selection, use only the checks that matter to the recipient. See searchable PDF verification, PDF export quality, and document storage choices.
Compare the complete exported document, its destination, page limits, branding, account requirements, and whether text remains searchable in another PDF reader. Test the workflow you will repeat.
No. Document recognition and cloud storage are separate functions. An app can process text on the device and then upload a document when you enable backup or export. Check each developer’s documentation and your settings.
For many simple forms and letters, yes. Notes and Files support built-in scanning, and Notes supports a Markup signature. A dedicated app may fit better when you need a separate document library or repeated PDF operations.
Export the same sample from each shortlisted app, open each copy in another PDF reader, search a reference number, and select a paragraph. Compare the recognized text with the original pages.
This comparison does not establish a security winner. Check processing location, optional backup, account settings, permissions, and the current privacy policy. On-device OCR does not mean an app collects no diagnostics or account data.
Capture or import a document, review its pages, and export a copy. Free access covers the first three pages per document; exported files include ScanLens branding. See the pricing page for additional tools.
