You don’t need a scanner to scan a document. Your phone’s camera can turn a bill, a form, or a receipt into a clean PDF in about a minute. Here’s the short answer on the best free scanner app: use the tool that’s already on your phone first, like Notes on an iPhone or Google Drive on Android. If you want more features, Adobe Scan and Genius Scan are two popular choices, and both have a free version.
Start with what’s already on your phone
- iPhone: The Notes app can scan documents. Open a note, tap the camera button, and choose Scan Documents.
- Android: The Google Drive app has a scanner. Google’s help page says to open Drive, tap Camera, point the camera at a document, take the photo, adjust it, and tap Done. Google says scans save as searchable PDFs, and that it doesn’t use your Drive content for advertising. Read the Google Drive scanning help page.
For one-off jobs like a receipt or a form, these are often enough. Menu names can change with updates.
Free scanner apps at a glance
I compared each app’s App Store and Google Play listing. Prices and ratings are as of October 2026 and can change.
| App | Price | iPhone / Android | Rating | Best for |
|---|---|---|---|---|
| Adobe Scan | Free; Plus and Premium plans in the app | Both | 4.88 on App Store (1.6M); 4.62 on Google Play (3M) | Text recognition and PDFs |
| Genius Scan | Free; Plus and Ultra plans in the app | Both | 4.9 on App Store (1.4M); 4.86 on Google Play (617K) | Simple, fast scanning |
Adobe Scan: best for searchable PDFs
Adobe Scan is made by Adobe Inc. Its Google Play listing says it has OCR, short for optical character recognition, which turns the words in a photo into text you can search.
- Pros: Very popular, strong ratings, and works with other Adobe tools.
- Cons: The App Store lists Plus plans at $4.99 a month or $19.99 a year, and Premium plans from $9.99 a month, so read the price before you tap.
- Privacy (App Store label): Data used to track you: identifiers. Linked to you: purchases, contact info, user content, search history, identifiers, usage data, and diagnostics.
- Price: Free with in-app purchases.
Download it from the App Store or Google Play.
Genius Scan: best for a simple, light app
Genius Scan is made by The Grizzly Labs. It has a clean layout, high ratings on both stores, and a shorter privacy label than Adobe Scan.
- Pros: Simple, top ratings, and fewer data types on its label.
- Cons: Some features need a paid plan. The App Store lists Plus at $1.99 a month and $11.99 a year, and Ultra at $4.99 a month and $39.99 or $49.99 a year.
- Privacy (App Store label): Data linked to you: contact info and user content. Not linked to you: usage data and diagnostics.
- Price: Free with in-app purchases.
Download it from the App Store or Google Play.
How to scan a document with your phone
- Place the paper on a flat, dark surface with good light and no shadows.
- Open your scanner app, or the Notes app on iPhone or Google Drive on Android.
- Point the camera at the page, so all four corners are in view.
- Take the photo, and let the app crop the edges. If it’s off, adjust the corners by hand.
- Add more pages if you need them.
- Save as a PDF and name the file so you can find it later.
- Share the PDF from the share button, or save it to your files.
For more everyday apps, browse our everyday app guides and our free app picks.
Frequently asked questions
What’s the best free scanner app?
Start with the free tools on your phone. If you want more, Genius Scan is simple and Adobe Scan is stronger on searchable PDFs. Try them on one document and see which you like.
Are scanner apps safe?
The apps here are on the official stores. Still, they handle sensitive paper, so read the privacy label and delete scans you don’t need.
Can I scan without an internet connection?
The camera works offline on most phones. Some features, like cloud storage or text recognition, may need a connection, so check the app.
Will a scanned PDF be accepted by an employer or a school?
Often, yes, if it’s clear and complete. Check the requirements, such as file type and size, before you submit.
Bottom line
- Easiest: the scanner built into your phone.
- Best for searchable PDFs: Adobe Scan.
- Best simple option: Genius Scan.
Scan one document today to try it. Plans and prices change, so check each listing before you subscribe.
