HashDoc
Seal your data
Free · In‑App Purchases
Tamper-proof auditable evidence for your documents.
Tamper-proof auditable evidence for your documents.
Choose a file, and HashDoc creates a cryptographic hash on your device, seals that hash on the blockchain, and generates a proof you can store, share, and verify later. Your original files stay on your device and private at all times.
Use HashDoc to:
Create proof for documents, deeds, audits, code, photos, and video
Generate a shareable proof PDF
Verify whether a file still matches its original seal
Add optional account-backed attribution
Keep control of your files with local-first handling and full privacy
HashDoc is built for auditors, creators, IP professionals, compliance teams and individuals who need a clear integrity trail for the files that matter most.
Terms of Use (EULA):
https://www.apple.com/legal/internet-services/itunes/dev/stdeula
Terms of Use:
https://www.proofstack.eu/iosapptermsofuse/
Privacy Policy:
https://www.proofstack.eu/iosappprivacypolicy/
Disclaimer:
https://www.proofstack.eu/iosappdisclaimer/
FAQ Evidentiary use:
https://www.proofstack.eu/iosappfaq/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Bug fixes
The developer, Impact Makers (Apps), indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Impact Makers (Apps)
- Size
- 10.7 MB
- Category
- Utilities
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - iPad
Requires iPadOS 26.0 or later. - Mac
Requires macOS 26.0 or later.
- iPhone
- Languages
- English
- Age Rating
18+
- 18+
- In-App Purchases
Yes
- Pro $69.99
- Premium $11.99
- Basic $3.99
- Copyright
- © Impact Makers BV