PDF Scanner
Productivity · Android · Free
Scan documents, convert photo to PDF, extract text with OCR - all offline.
- ✓Image to PDF
- ✓OCR
Productivity apps — free productivity apps
iStack builds 5 free productivity apps for Android and iOS. Every app is free forever — no subscription, no account required, no dark patterns. Built by one indie developer with 419K+ total installs.
5Apps in category
FreePrice, always
4.6★Avg. rating
No accountRequired
All Productivity apps at a glance
| App | Platform | Key Feature | Get App |
|---|---|---|---|
 | Android | Google Forms manager with AI | Install |
 | Android | Word & Docs viewer | Install |
 | Android | PDF & document suite | Install |
 | Android | Image to PDF & OCR | Install |
 | Android | Sign & annotate PDFs | Install |
Editor's Choice
Top productivity apps from iStack
Forms
Productivity · Android · Free
Forms is a third-party Google Forms manager for Android. Create, edit, and manage Google Forms on your phone with AI-assisted form generation, response charts, QR code sharing, and PDF export.
- ✓Google Forms manager with AI
Document Reader
Productivity · Android · Free
Open DOC, DOCX & PDF files. Fast document viewer, word reader & file manager.
- ✓Word
- ✓Docs viewer
More productivity apps
Which productivity app is right for you?
TODO: Use case sub-sections — "Best productivity app for [use case]" — requires keyword research + human writing.
Frequently asked questions
What is the best free productivity app?
iStack offers 5 free productivity apps, including PDF Scanner, Forms, Document Reader. Each is completely free with no subscription required — just download and use.
Are all iStack productivity apps really free?
All iStack apps are free to download. On Android, apps are ad-supported with no subscriptions or in-app purchases. On iOS, apps are free to install and may offer optional premium features through in-app purchase or subscription.
Do iStack productivity apps work offline?
Most iStack productivity apps work fully offline. Core features do not require an internet connection. A few apps with live data — such as currency rates or map tiles — need connectivity for real-time updates, but core functionality still works offline.
Are iStack productivity apps available on iPhone?
The productivity apps listed here are currently available for Android on Google Play. iStack also publishes iOS-exclusive apps in other categories. Check back for future iOS productivity releases.
Do iStack productivity apps require creating an account?
No. iStack apps do not require an account, email sign-up, or any registration. Open the app and start using it immediately.
Who makes these productivity apps?
iStack is an independent app publisher that has shipped 45 apps on Android and iOS with 419K+ total installs. Every app is maintained and updated regularly.
How often are iStack productivity apps updated?
Most iStack apps are updated every few weeks. Updates bring new features, performance improvements, and bug fixes. You can check each app's Play Store or App Store listing for the exact update date.