AllApps

The best document scanner apps.

Adobe Scan is the top pick for anyone who already has an Adobe account and just needs occasional quick scans. It's easy to use and reliable for basic jobs, though watch for features shifting behind a subscription over time. If you scan rarely and want a simpler scan-to-PDF flow without an existing Adobe account, Genius Scan is the better fit.

The filter. Every app here is rated 4.2 or better, has been updated in the last eighteen months, and has no significant number of reviewers reporting it broken. Price is not the rule on this list — some are free, some are not.
Top pick

Adobe Scan: PDF & OCR Scanner

Adobe Inc.
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Free4.9★ (1,589,052)Updated Sep 8, 2026unverified
Verdict
Adobe Scan is easy to use and reliable for basic scanning, but a meaningful slice of reviewers describe features getting locked behind subscriptions after the fact, plus some crashes and slowdowns.
Best for
Someone who already has an Adobe account and just needs occasional quick scans, not someone who wants full PDF export and editing to stay free long-term.
The catch
Multiple reviewers report being charged for a subscription they didn't intend to start, or finding core features like exporting DocX or scanning multiple documents suddenly paywalled after initial use.
Native app

CamScanner - PDF Scanner App

INTSIG Information Co., Ltd
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Free4.8★ (1,899,743)Updated Sep 7, 2026unverified
Verdict
CamScanner is easy to use for scanning, but the free version is stuffed with ads and the subscription pricing draws frequent complaints about surprise charges and paywalled exports.
Best for
Someone who scans documents rarely and is fine paying for a subscription immediately to avoid the ad-laden free tier.
The catch
The free version reportedly shows ads every few seconds, and exporting to PDF can require a paid subscription that some reviewers say charges without warning.
Native app

Scanner App: Genius Scan

The Grizzly Labs
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Free4.9★ (1,361,148)Updated Sep 13, 2026unverified
Verdict
Genius Scan gets consistent praise for being fast and simple to scan and export documents, but several reviewers hit a paywall wanting to export or share files, being pushed into a trial they didn't expect.
Best for
Someone who scans receipts or paperwork occasionally and wants a quick, intuitive scan-to-PDF flow without learning a complex interface.
The catch
Exporting or sharing scans can prompt a forced trial signup, and at least one user lost the ability to import screenshots outright — don't count on unrestricted free export.
Native app

iScanner: PDF Document Scanner

BPMobile
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Free4.8★ (1,400,795)Updated Aug 20, 2026unverified
Verdict
iScanner scans quickly and users find it easy to use, but the reviews show a pattern of subscription paywalls that limit basic scanning and complaints about being billed automatically or unclear cancellation.
Best for
Someone who just wants a quick, simple scan-to-PDF tool and is willing to pay for a subscription without scrutinizing the terms too closely.
The catch
Multiple reviewers describe being charged for a yearly subscription shortly after install, being blocked from scanning more than one page without paying, and finding it deliberately hard to cancel.
Native app

Scanner Pro・Scan PDF Documents

Readdle Technologies Limited
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Free4.9★ (335,215)Updated Aug 27, 2026unverified
Verdict
Scanner Pro scans and exports cleanly and most reviewers find it easy to use, but a recurring complaint is that core features now sit behind subscription paywalls and popups, and a smaller group reports crashes and lag.
Best for
Someone who already pays for a subscription-based scanning tool and just wants reliable PDF export, not someone looking for a free one-off scanner app.
The catch
Multiple reviewers say the app now pushes subscription upsells and popups aggressively, with some saying free functionality has been reduced to push the Plus plan; a handful also report crashes and freezing when browsing older documents.
Native app

Who should skip this entirely.

If your phone's built-in camera or a free Notes app scan feature already covers your needs, skip this category entirely. iPhones and many Android phones have native document scanning built into the Files or Notes app, and it costs nothing and has no subscription traps. Only look at dedicated scanner apps if you need OCR text recognition, batch scanning, or cloud sync that the built-in tools don't offer. Buying a subscription app for occasional one-page scans is solving a problem you don't have.

Questions.

Which of these apps is actually free to use long-term?None of them stay fully free for real document work. Every app on this list eventually pushes exports, multi-page scanning, or PDF conversion behind a paywall or subscription, so expect to pay something if you use it regularly.
Are the subscription charges a common complaint across all these apps?Yes. Reviewers across nearly every app here report being charged automatically, finding cancellation difficult, or discovering that features they expected to be free got paywalled after they'd already started using the app.
Which app is best if I only need to scan something once in a while?Genius Scan or Adobe Scan fit occasional use best since both are described as fast and simple for basic scan-to-PDF tasks. Just don't count on unrestricted free exporting with either.
Do any of these apps avoid ads and subscription pressure entirely?No. Even the ones praised for ease of use, like Genius Scan and Scanner Pro, have recurring complaints about paywalls, popups, or forced trials. Pick based on which tradeoff bothers you least, not on finding one with none.