It depends on how you feel about tracking: Fast Scanner declares data used to track you. The sensitive items are location. In total the label lists 4 data types; 64% of document scanners we checked declare tracking.
Fast Scanner privacy in one look
- 1Collects nothing
- 2Not linked
- 3Linked
- 4Tracks you
Built only from the developer's App Store label. It describes disclosure, not tested behaviour.
Fast Scanner's developer reports using location, identifiers, usage data, diagnostics to track you across other companies' apps and websites.
Did Fast Scanner ask for something?
Pick the permission prompt you saw. We compare it with what Fast Scanner's developer declared.
Fast Scanner lists Location on its label, including for tracking. Choose While Using and turn off Precise Location if the feature works without it.
User Content is not on Fast Scanner's label. That can be fine: data used only on your iPhone does not have to be declared. If the data would need to leave the phone for the feature to work, ask why it is missing.
Contacts is not on Fast Scanner's label. That can be fine: data used only on your iPhone does not have to be declared. If the data would need to leave the phone for the feature to work, ask why it is missing.
Fast Scanner declares data used to track you, so expect the “Allow to track?” prompt. Tap Ask App Not to Track; the app must keep working without it.
Health & Fitness is not on Fast Scanner's label. That can be fine: data used only on your iPhone does not have to be declared. If the data would need to leave the phone for the feature to work, ask why it is missing.
A permission is what the app can reach on your iPhone; the label is what the developer says leaves it. They answer different questions.
What Fast Scanner collects, explained
| Data type | What it covers | Where to limit it |
|---|---|---|
| LocationSensitiveUsed to track youLinked to you | Where your phone is, either precisely (street level) or approximately (city or area). | Settings › Privacy & Security › Location Services: choose Never or While Using, and turn off Precise Location if the app does not need it. |
| IdentifiersUsed to track youLinked to you | An account ID, screen name, customer number or a device-level ID such as the advertising identifier. | Settings › Privacy & Security › Tracking: turn off Allow Apps to Request to Track, or tap Ask App Not to Track when prompted. |
| Usage DataUsed to track youLinked to you | What you tap, open and view inside the app, plus which ads you have seen. | There is no single iOS switch. Look for an analytics or personalised-ads toggle in the app's own settings. |
| DiagnosticsUsed to track youLinked to youNot linked to you | Crash logs, launch times, hang rates and energy use. | Settings › Privacy & Security › Analytics & Improvements › Share With App Developers controls what Apple passes on; the app's own crash reporting is separate. |
What Fast Scanner's label means for you
Fast Scanner's label has 4 types under “Data Used to Track You”, 4 types under “Data Linked to You”, 1 type under “Data Not Linked to You”. A data type can appear in more than one section when it is used for different purposes — for example, identifiers used for both analytics and advertising.
Tracking is the declaration that most separates apps. It means location, identifiers, usage data, diagnostics from Fast Scanner can be combined with data from other companies to target or measure ads, or shared with data brokers. On iOS 14.5 and later, the app must ask your permission before tracking you through the advertising identifier; answering “Ask App Not to Track” blocks that identifier and tells the developer you have declined.
The items that deserve the most attention are location. Location history reveals home, work and routines. Precise location deserves the most scrutiny.
Scanners handle IDs, contracts, receipts and medical letters. Many offer cloud OCR, which means your document images leave the phone. Prefer on-device text recognition where offered, and check whether scans sync to the developer's cloud by default.
Among the 173 document scanners in our snapshot with a label, 64% declare tracking, 68% collect data linked to you and 20% say they collect nothing. Fast Scanner lists 4 data types, more than the average of 2.8 for this group.
Business apps often handle other people's data — clients, colleagues and customers — so what they collect can affect more than you.
Settings to check for Fast Scanner
- 1
Tracking
Settings › Privacy & Security › Tracking. If “Allow Apps to Request to Track” is off, apps cannot ask, and they are told to treat you as having declined. You can also turn it off for this app alone.
- 2
Location
Settings › Privacy & Security › Location Services › Fast Scanner. Choose While Using or Never, and switch off Precise Location if a city-level answer is enough.
- 3
Photos
Settings › Privacy & Security › Photos. Limited Access lets you pick exactly which pictures the app can see; Add Photos Only lets it save without reading your library.
- 4
Lock the app
On iOS 18 and later, touch and hold the icon and choose Require Face ID. Anyone who picks up your unlocked phone then needs your face, fingerprint or passcode to open it.
- 5
Notifications
Settings › Notifications › Fast Scanner › Show Previews: When Unlocked keeps message and account details off the Lock Screen.
Does Fast Scanner track you?
Location, identifiers, usage data and diagnostics. Apple defines tracking as linking data from this app with data from other companies' apps, websites or offline sources for targeted advertising or ad measurement, or sharing it with a data broker.
Does Fast Scanner track you? Full answer and how to stop it →
Lock Fast Scanner behind Face ID
- Find Fast Scanner on your Home Screen or in App Library.
- Touch and hold the icon until the quick-actions menu opens.
- Tap Require Face ID (or Require Touch ID / Require Passcode, depending on your iPhone).
- Tap Require Face ID again to confirm. Fast Scanner now asks for authentication every time it opens.
The lock is an iPhone feature, so it works whether or not Fast Scanner has a passcode of its own. It does not change what the app sends to its developer.
About Fast Scanner
| Developer | Hang Nguyen |
| App Store category | Business |
| Latest version | 3.8.9, released December 2025 |
| First released | January 2013 |
| Requires | iOS 13.0 or later |
| Size | 61 MB |
| Age rating | 4+ |
| Languages | 2 (EN, RU) |
| Bundle ID | com.coolmobilesolution.fastscanner.lite |
The current version shipped in December 2025. That is recent enough that the label should reflect current practices, but check the App Store page again before relying on it.
Also by Hang Nguyen: Fast Scanner - PDF Doc Scan.
What the label cannot tell you
- A label is self-reported. Apple publishes the developer's answers and can reject apps that misrepresent them, but it does not independently verify what Fast Scanner sends.
- It does not say where data is stored, how long it is kept, whether it is encrypted, or which companies receive it. The privacy policy covers those points.
- Optional data counts: if a feature lets you add something (a profile photo, a phone number), the type is listed even if you never use the feature.
- Data handled only on your iPhone is not 'collected', so a no-collection label is compatible with an app that reads your files locally.
- Third-party sign-in, payment processors and SDKs are supposed to be included, but a label can lag behind a new version.
The question to ask Fast Scanner's developer: Are my scans processed on the phone or uploaded for OCR?
Fast Scanner vs similar document scanners
- Fast Scanner (this app)
- PDF Scanner・Document Scanner・
- PDF Scanner Photo Converter
- Document Scanner Pro
- Scanner PDF Document Scan App
- Scanory
- EasyScan
Fewer types is not automatically safer: a cloud backup app has to collect your files to work. Compare like with like.
Look up any of our apps in seconds, or put two labels side by side.
Apps similar to Fast Scanner
All document scanners → Who tracks you? A–Z → Apps that collect location → Privacy label decoder →
Your Fast Scanner privacy checklist
Done. You have applied every control the label points to.
True or false?
- Right.Not quite.
True: it lists location, identifiers, usage data and diagnostics under Data Used to Track You.
- Right.Not quite.
Labels are self-reported by developers. Apple can reject or remove apps that misrepresent practices, but it does not audit each label.
- Right.Not quite.
True: Location appears on its label.
- Right.Not quite.
It is collected and sent; the developer says it is de-identified rather than tied to your account or device.
- Right.Not quite.
Apple's rules require apps to work the same whether or not you allow tracking.