In short
- Test it in airplane mode: a private scanner works fully offline.
- Prefer no account, on-device OCR and no ads.
- Scanning runs on your phone, so a one-time price is fair. Backup is the exception.
Why this is harder than it should be
Scanning a document is a simple job: find the page, straighten it, clean it up, save a PDF. Yet many scanner apps wrap that job in things you didn’t ask for. Some want an account before the first scan. Some upload every page to their servers to process it or “sync” it. Many show a paywall that turns out to be a weekly or monthly subscription, sometimes behind a free trial that renews automatically.
None of that is needed to scan a page well. A modern Android phone is powerful enough to detect edges, correct perspective and even recognise text entirely on the device. So when you pick a scanner, it’s worth checking a few things before you trust it with your passport or your tax return.
A checklist for a private scanner
1. Does it work offline?
Turn on airplane mode and try a scan. If scanning, filters, text recognition and PDF export still work, the app is processing on your phone. If it stalls or asks you to connect, your pages are going somewhere.
2. Does it need an account?
An account links your documents to your identity and gives the app a reason to store them on a server. A scanner that works with no sign-up has far less of your data to lose.
3. Where does text recognition (OCR) run?
OCR is where many apps quietly upload images. Look for on-device text recognition, stated in the app description or privacy policy, not just “fast OCR”.
4. What does the privacy policy say it collects?
Read the Data safety section on the Google Play listing and the privacy policy. Look for clear statements that document content, file names and images are not collected, and for a way to turn off analytics.
5. Are there ads?
Ad-supported apps typically include advertising SDKs, which collect device identifiers. That doesn’t sit well next to your identity documents.
6. How is it priced?
Before you tap “start free trial”, find the renewal price and period. A scanner you use a few times a month can cost far more per year on a subscription than a one-time purchase costs in total.
Subscription vs one-time purchase
Subscriptions make sense for services that cost money to run every month, such as cloud storage. Scanning on your own phone doesn’t: once the app is installed, the work happens on hardware you already own. A one-time price matches that. You pay once, and the app is yours.
The honest exception is backup. Storing encrypted copies of your documents on a server does cost money every month, so a subscription for that is fair, as long as it stays optional and the scanner itself doesn’t depend on it.
How Scansy measures up
We built Scansy around this checklist. Here’s how it answers each point today:
| Question | Scansy |
|---|---|
| Works fully offline | Yes — scanning, filters, OCR and every PDF tool |
| No account needed | Yes — no sign-up, no sign-in wall |
| On-device text recognition | Yes — images are never sent anywhere for OCR |
| Documents stay on the phone | Yes — unless you turn on encrypted backup yourself |
| No ads | Yes — never |
| Analytics can be turned off | Yes — anonymous counts only, one switch in Settings |
| Pricing | 10 free scans, then Scansy Pro: one payment, yours for life |
Optional backup (Scansy Vault, coming soon) is the one subscription, because it is the one part that runs on a server. It is end-to-end encrypted on your phone before upload, so we can’t read what you back up. You can read exactly what Scansy collects in the privacy policy.
The trade-offs, honestly
- No automatic cloud sync. Documents stay on the phone you scanned them on. To move them, export PDFs and share them where you like (encrypted backup is coming soon).
- Android only. Scansy runs on Android 7.0 and newer.
- Your phone, your responsibility. Because we don’t hold your documents, we can’t restore them if your phone is lost. Keep copies of the ones that matter.