Stamp Stack
Track Your Tax Stamps
Only for iPhone
$3.99 · Designed for iPhone. Not verified for macOS.
iPhone
Keep your NFA collection organized with Stamp Stack - the secure, private way to track your Form 4 approvals and tax stamps.
Key Features:
- Scan Form 4 documents with automatic text extraction
- Track pending submissions and approved stamps
- Monitor wait times and approval dates
- Organize items by type: suppressors, SBRs, SBS, AOW, machine guns, and more
- Manage NFA trusts and associated items
- Secure cloud backup with end-to-end encryption
- Biometric lock (Face ID / Touch ID) and PIN protection
- Import documents directly from email
Your Data, Your Control:
All data is encrypted on your device before syncing to the cloud. Only you can access your information - we can't see your items, documents, or personal details.
Perfect for:
- Suppressor owners tracking wait times
- Collectors managing multiple NFA items
- Trust owners organizing shared items
- Anyone waiting on Form 4 approval
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Daniel Goodwin, 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
- Daniel Goodwin
- Size
- 86.3 MB
- Category
- Utilities
- Compatibility
Requires iOS 15.5 or later.
- iPhone
Requires iOS 15.5 or later. - iPod touch
Requires iOS 15.5 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
9+
- 9+
- Infrequent
Guns or Other Weapons
- Copyright
- © Apex3D
