"Free" means different things across scanner apps. Some are genuinely free forever. Others are trials dressed as free tiers. This page ranks five iPhone scanner apps by how much they actually give you for $0 — no watermark smuggling, no 3-day trial bait.
The App Store lists dozens of "free" scanner apps. In practice, "free" can mean:
This ranking uses the first four categories and avoids apps in the fifth (trials dressed as free tiers). For each app, we state exactly what the free tier covers.
Cost: $0 forever, built into iOS 11+.
Account: Apple ID (you already have one).
Watermark: None.
OCR: Live Text on images inside Notes (not an OCR layer inside the exported PDF).
Limits: No searchable PDF export, no merge/split/compress, no AES-256 password protection, no dedicated ID or passport modes.
Verdict: If your scan stays inside a note or goes out as a one-off PDF, Apple Notes is the right answer — zero install friction, zero cost. The moment the PDF needs editing, locking, or a searchable OCR layer, you outgrow it. See ScanLens vs Apple Notes Scanner for the full breakdown.
Cost: $0 forever, no paid tier.
Account: Microsoft account required for most features (save to OneDrive, OneNote, Word).
Watermark: None.
OCR: Microsoft cloud OCR, used when exporting to Word or Excel.
Limits: Cloud-first — most operations require internet. No PDF editing (merge, split, compress, password-protect). Deeply integrated with Microsoft 365 but limited outside it.
Verdict: If you work inside Microsoft 365, Lens is hard to beat — free forever, direct-to-OneNote/Word/Excel. If you do not use Microsoft 365, the value drops quickly. See ScanLens vs Microsoft Lens for details.
Cost: Free download, free tier with watermark; Premium $4.99/mo, $29.99/yr, or $79.99 Lifetime.
Account: Not required.
Watermark: Yes, on free-tier exports. Removed with Premium.
OCR: On-device via Apple Vision framework, 50+ languages (Premium).
Limits: Free covers scanning, crop/rotate/filters, PDF/JPG/PNG export, folders. Premium unlocks OCR, searchable PDFs, merge / split / compress, AES-256 encryption, e-signatures, and cloud sync.
Verdict: Free tier is genuinely usable — the watermark is the only limit that matters for occasional users. Premium (especially the $79.99 Lifetime) is the lowest total-cost option if you scan regularly and want the full toolkit without a subscription. See what is free in ScanLens or full pricing.
Cost: Free download; Adobe Acrobat Premium at ~$9.99/mo for advanced features.
Account: Adobe ID required (can sign in with Apple or Google).
Watermark: None on exports.
OCR: Adobe cloud OCR — industry-leading accuracy, but requires internet and uploads your scan.
Limits: Free tier has monthly page quotas on OCR and export-to-Word/Excel; cloud upload of every scan is mandatory; some advanced PDF editing requires Acrobat Premium.
Verdict: For users already in the Acrobat ecosystem with a Creative Cloud or Acrobat subscription, Adobe Scan is the obvious choice — mobile/desktop parity, Acrobat's recognized OCR, and polished UX. For everyone else, the cloud-first architecture and account requirement are dealbreakers. See ScanLens vs Adobe Scan.
Cost: Free with ads; Premium ~$4.99/mo or ~$49.99/yr.
Account: Required for sync and most features.
Watermark: Yes, on free-tier exports.
OCR: Cloud-based (CamScanner's servers).
Limits: Free tier shows ads and watermarks every export. All scanning and OCR processes through CamScanner's servers in China — a privacy consideration for sensitive documents. See the is CamScanner safe guide for the full history.
Verdict: Functionally competent and widely used across iOS and Android. The cloud-first, China-jurisdiction architecture makes it a questionable choice for medical records, tax files, legal documents, and anything covered by DLP policies. Cross-platform teams may still prefer it. See ScanLens vs CamScanner.
Side-by-side on the features that matter for sending scans to other people.
| Feature | Apple Notes | MS Lens | ScanLens | Adobe Scan | CamScanner |
|---|---|---|---|---|---|
| Free forever | Yes | Yes | Yes (watermark) | Yes (quota) | Yes (ads + watermark) |
| Watermark on export | No | No | Yes on free | No | Yes on free |
| Account required | Apple ID | Microsoft | No | Adobe ID | Required |
| OCR on free | Live Text only | Cloud (with quota) | Premium feature | Limited pages/mo | Cloud (with quota) |
| Searchable PDF export | No | No | Premium | Yes | Premium |
| On-device processing | Yes | Partial | Yes | No | No |
| Merge PDF on free | No | No | Premium | No | Limited |
| Password-protect PDF | No | No | Premium | Acrobat Premium | Premium |
| Ads | No | No | No | No | Yes |
If "completely free" means no paid tier at all and no account-gated limits, Apple Notes is the best option — it is built into iOS, requires nothing to install, and has no ads or watermarks. For users inside Microsoft 365, Microsoft Lens matches on the "no paid tier" promise and adds deeper integration with OneNote, Word, and OneDrive. Both are limited compared to paid scanner apps on PDF editing and OCR, but for simple scanning they are genuinely free forever.
ScanLens is free to download and free to use for basic scanning (document, ID, passport capture with PDF/JPG/PNG export). Free-tier exports include a ScanLens watermark. Premium ($4.99/mo, $29.99/yr, or $79.99 Lifetime) removes the watermark and unlocks OCR in 50+ languages, searchable PDFs, merge/split/compress, password protection, e-signatures, and cloud sync. No account is required for the free tier. See what is free in ScanLens.
Apple Notes (uses your existing Apple ID, which you already have) and ScanLens (genuinely no account — you can install and scan without signing up for anything) are the two options without a separate account. Microsoft Lens, Adobe Scan, and CamScanner all require creating an account to access their free-tier features.
Adobe Scan is free to download and works for basic scanning with an Adobe ID. The free tier has monthly quotas on OCR pages and some export formats. Advanced features — unlimited OCR, export to Word or Excel without limits, password protection — require an Adobe Acrobat Premium subscription (~$9.99/mo). For occasional scanning the free tier is usable; for heavy document workflows the Acrobat subscription is effectively required.
CamScanner is generally safe from malware today — the 2019 Android advertising-SDK incident was resolved and has not recurred. The ongoing consideration is architectural: CamScanner processes documents on servers under Chinese data jurisdiction, which may matter for sensitive documents under HIPAA, GLBA, or corporate DLP policies. For routine scanning of non-sensitive material the safety record is fine. For medical, tax, legal, or financial documents, on-device alternatives (Apple Notes, ScanLens) are structurally better. See the full CamScanner safety history.
On the free tier specifically: Adobe Scan leads on accuracy (limited by monthly page quota), followed by Microsoft Lens for Word/Excel conversion. Apple Notes uses Live Text on images but does not embed OCR into the exported PDF. ScanLens's OCR (via Apple's Vision framework) is Premium-only. If you need free OCR with no install, Adobe Scan is the answer for occasional use; for heavier use, ScanLens Premium or Adobe Acrobat subscription make more sense financially.
Free scanning with no account required. Keep the free tier forever — or unlock the full PDF toolkit with Premium when the watermark starts to matter.
