This one's easy to get wrong, because on the surface both apps do the same thing: point your camera at paper, get a clean digital copy. But they're built for different lives. Microsoft Lens is a capture tool for the Office world — whiteboards into OneNote, printed pages into Word, everything into OneDrive. Paperlock is a private vault for your personal papers — the receipts, IDs, and medical letters you'll need to find and understand months from now.
Pick based on where the document is going, not on how it gets scanned.
The short answer
If you live in Microsoft 365 — OneDrive at work, OneNote for meetings, Word for everything — use Microsoft Lens. It's free, it's mature, and it feeds the tools you already use better than almost anything else.
If the documents piling up are personal — insurance letters, warranties, passports, prescriptions, that receipt you'll need for a return in March — a scanner only solves the first half of the problem. You'll have tidy PDFs and no idea what any of them say. That second half is what Paperlock is for.
What Microsoft Lens genuinely does well
Credit where it's due — Lens is one of the best free scanners you can put on a phone, and a few things about it are honestly excellent:
- Whiteboard mode. Lens was practically born in conference rooms. It straightens the board, kills the glare, and boosts the marker strokes so a photo of a brainstorm is actually readable next week. No other mainstream scanner does this as well.
- Business card mode. It captures cards and gets the details into OneNote, which is quietly one of the most useful things at any conference.
- Exports that keep working. A scan can become a Word document, a PowerPoint slide, a OneNote page, a PDF, or a file in OneDrive. If your scan's destination is a Microsoft app, Lens speaks its language natively.
- Free with a Microsoft account. No subscription just to scan. For a lot of people that settles the scanner question by itself — though if you're weighing it against other capture apps, our Paperlock vs. Adobe Scan comparison covers the other big free option.
If you asked us "what should I use to scan handouts into OneNote?", we'd say Microsoft Lens without blinking. It suits that reader better than Paperlock does.
Where a scanner stops
Here's the honest boundary, and it applies to every scanner app, not just Lens: a scanner's job ends the moment the file is saved. What you have afterward is a picture of a document — sharper and straighter than a camera photo, often with searchable text underneath (that's the text-recognition trick scanners use, explained without jargon). What you don't have is anyone who read it.
So the rest is on you. You name the file something better than
Scan_2026-07-17(3).pdf, or you don't. You file it in the right OneDrive
folder, or you don't. And eight months later, when you need to know whether the
dishwasher warranty covers the pump, you're opening PDFs one by one, because
search can match words but it can't answer questions.
That's the real difference between these two apps. Lens is intake: getting paper into the digital world quickly and cleanly. Paperlock is memory: knowing what your documents say after you've forgotten you saved them.
What Paperlock does instead
Paperlock scans too — auto-crop, straighten, multi-page — and imports PDFs and images from Files, email, or your photos. But capture is just the doorway. Once a document is in:
- It gets read, not just stored. Paperlock works out what the document is, who it's from, the date, the amount, when it expires — even from handwriting — and gives it a clear title like "Blue Bottle Coffee receipt — $14.20". No folders, no tags, no naming. There are deliberately no folders at all.
- You find things by asking. "When does my passport expire?" "How much did I spend at Blue Bottle?" "Find receipts from that cafe last fall." Answers come with the source documents attached, and if the answer isn't in your vault, it says so instead of guessing. That's the heart of how Paperlock works.
- It's locked, properly. Documents are encrypted on your phone, the app locks with Face ID on open and again after about a minute in the background, and sensitive documents — IDs, passports, medical papers — show blurred thumbnails until you re-confirm with Face ID. No account, no sign-up, no email.
- Expiries take care of themselves. Anything with an expiration date — passport, insurance, warranty — triggers reminders 30 days and 7 days out, automatically.
That last set matters most for exactly the papers Lens isn't aimed at. A whiteboard doesn't need Face ID. Your medical records do.
Side by side
| Microsoft Lens | Paperlock | |
|---|---|---|
| Built for | Capturing documents into Microsoft 365 | Storing and remembering personal papers |
| Whiteboards & business cards | Excellent, dedicated modes | Not the focus |
| Exports | Word, PowerPoint, OneNote, OneDrive, PDF | Any document exports/shares as PDF |
| Finding things later | Your folder names and file search | Ask in plain English; answers cite the source document |
| Reads dates, amounts, expiries | No — organizing is up to you | Yes, automatically, even handwriting |
| Expiry reminders | No | Automatic: 30 days and 7 days before |
| Privacy model | Files live in your Microsoft account | Encrypted on your phone, Face ID lock, no account at all |
| Price | Free with a Microsoft account | Free for 25 documents; Plus at $4.99/month or $39.99/year |
Which one should you pick?
Pick Microsoft Lens if your scanning is mostly work: whiteboards after meetings, handouts into OneNote, contracts into OneDrive, anything that needs to become a Word file. It's free, it's good at all of that, and nothing about Paperlock replaces it there.
Pick Paperlock if the paper stressing you out is personal — the drawer of receipts, the insurance renewal you'll forget, the passport whose expiration date you genuinely do not know. You want those locked behind Face ID, read for you, and answerable later, not sitting in a folder tree you have to maintain.
Use both if your life has both halves — most do. Lens for the office pipeline, Paperlock as the private vault for everything with your name, your money, or your health on it. Scans from Lens are just PDFs, and Paperlock imports PDFs happily, so the two even chain together.
One scans for your job. The other remembers for you. Paperlock is coming soon to iPhone — and Lens is free to use right now, so if the office half is your problem, you don't have to wait for anything.