Let's start with credit where it's due: Scanner Pro, made by Readdle, is one of the most polished scanner apps ever built for the iPhone. It's been around a long time, it's fast, the captures come out clean, and it's very good at the part most apps fumble — getting the finished scan out of your phone and to wherever it actually needs to go.
So this isn't a takedown. It's a fork in the road. Scanner Pro and Paperlock answer two different questions, and once you see which question is yours, the choice mostly makes itself.
What Scanner Pro does brilliantly
Scanner Pro's job is turning paper into a good PDF with as little friction as possible, then delivering it. Point the camera at a page and it finds the edges, crops, straightens, and cleans up the result. Multi-page documents come together quickly. And when the scan is done, the export side is where it really shines: Scanner Pro is built around sending — to email, to cloud storage, to wherever your scans are supposed to live — with upload workflows that make the routine version of that nearly automatic.
If your life includes a recurring loop of "scan this, send it there" — expense reports to accounting, signed forms back to the school office, paperwork to a lawyer — that loop is exactly what Scanner Pro was polished for, over many years, by a company that takes iOS software seriously. It's a paid, commercial app, and for people with that loop, it earns its keep.
Like most serious scanner apps, it can also recognize the text in your scans, so you can search for a word and find pages that contain it. That's genuinely useful, and it's also where the road forks.
The question each app is answering
Here's the honest core of it. A scanner app — even the best one — produces
pictures of documents. Beautiful, legible, well-compressed pictures, but
pictures. What they say is still your job to remember: you name the file (or
don't), you decide where it goes (or don't), and eight months later you're
scrolling a list called Scan 2025-11-03.pdf trying to remember which one was
the furnace invoice.
Paperlock starts from the opposite end. The scan is the easy part — your iPhone can already scan documents for free, and Paperlock's own camera does the usual auto-crop and straightening. The hard part is everything after, so that's what Paperlock does: it reads each document you save — what it is, who it's from, the date, the amount, when it expires — and files it automatically, with a clear title like "Blue Bottle Coffee receipt — $14.20." No folders, no tags, no naming. Even handwriting.
Then, when you need something, you don't search — you ask. "When does my passport expire?" "How much did I spend at Blue Bottle?" "Find receipts from that cafe last fall." Answers arrive with the source documents attached, and if the answer isn't in your vault, Paperlock says so instead of guessing. That's the whole idea of the app: intake is a solved problem; memory isn't.
One way to feel the difference: text search finds pages containing the word "warranty." A question — "which of my warranties are still active?" — needs something that actually understood the dates. That's the gap warranty paperwork falls into with every scanner app, and it's the gap Paperlock was built to close.
Side by side
| Scanner Pro | Paperlock | |
|---|---|---|
| Built for | Scan-and-send workflows | Keeping and remembering documents |
| Capture | Fast, polished, multi-page | Camera scanning, plus import from Files, email, and your photo library |
| After capture | You name, organize, and send | Reads, titles, and files each document automatically |
| Finding things later | Text search over scans | Plain-English questions, answered with sources attached |
| Expiry dates | Not its job | Automatic reminders 30 and 7 days before anything expires |
| Getting scans out | Excellent exports and upload workflows | Any document exports as a PDF |
| Privacy model | Standard app; scans go where you send them | Face-ID-locked vault, encrypted on the phone, no account or sign-up |
| Availability | On the App Store today | Coming soon, iPhone only |
Choose Scanner Pro if…
- Your documents have destinations. If almost everything you scan gets sent somewhere — a shared drive, an inbox, a bookkeeping system — Scanner Pro's export and upload workflows are the best reason it exists.
- You scan in volume. Big multi-page jobs, done often, reward a tool honed for exactly that.
- You need it today. Scanner Pro ships now; Paperlock is coming soon. Paper doesn't wait.
- You already have a filing system you trust. If your folder structure works and you actually maintain it (respect), a great scanner is all you're missing.
Choose Paperlock if…
- Your documents have no destination — they just need to be findable. Receipts, warranties, insurance cards, the pediatrician's after-visit summary. Nothing to send; everything to retrieve, someday, at a weird moment.
- You're the person who scans diligently and still can't find anything. The problem was never capture. It was the naming and filing you were supposed to do afterward, forever.
- Expiration dates ambush you. Paperlock reads expiry dates off passports, IDs, insurance, and warranties and reminds you 30 days and 7 days out, with no setup.
- The documents are sensitive. Paperlock is a locked vault first: Face ID on open, everything encrypted on the phone, blurred thumbnails on IDs and medical papers, no account required.
And if you're weighing Paperlock against scanner apps generally, the reasoning here carries over — our Paperlock vs. SwiftScan comparison walks the same fork with another well-made scanner.
Or, honestly, both
These two don't compete for the same slot in your life. Scanner Pro is a scanner with world-class delivery; Paperlock is a memory for your paperwork. If you already have a Scanner Pro routine you like, keep it — Paperlock imports PDFs, so the scans you make there can land in the vault and become things you can ask about. And the documents already hiding in your camera roll (there are more than you think — usually hundreds) Paperlock can find on its own, with your permission and your approval of every import.
The short version: if the scan is the product, get Scanner Pro. If the scan is just how a document gets into your life — and the real problem is what it says and when you'll need it — that's what Paperlock is for. Coming soon, to iPhone.