---
title: "Stamp Stack - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "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 "
---

# Stamp Stack — United States
> Track Your Tax Stamps

![Stamp Stack App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/dd/dd/1f/dddd1f0b-f978-0474-6bc4-8d18a7e596d1/AppIcon-0-0-1x_U007ephone-0-1-85-220.png/434x0w.png)

**Developer:** [Unknown](https://apptail.io/developer/unknown-kTcmS)
**Category:** Utilities
**Rating:** N/A (0 ratings)
**Price:** $3.99
**Bundle ID:** com.apex3d.stampstack
**Store:** Apple App Store
**Country:** United States
**Version:** 1.0 (released 2026-01-24)
**Original Release:** 2026-01-24
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id6757575828)
**AppTail Page:** [https://apptail.io/app/stamp-stack-cZmy/united-states](https://apptail.io/app/stamp-stack-cZmy/united-states)

## Stamp Stack Description
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

## Stamp Stack Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/0b/7b/6c/0b7b6c76-a9a0-2cbe-6b85-1d1ca962d2b8/IMG_1397_1320x2868.png/1320x2868.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/f4/17/7e/f4177ef9-b4f9-90cd-171c-8bf2f39aac55/IMG_1393_1320x2868.png/1320x2868.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/c2/13/4e/c2134e00-93a9-22d4-79c3-73c2e65cecbb/IMG_1392_1320x2868.png/1320x2868.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/a0/27/c2/a027c24b-38eb-3ba2-a768-c9e30cd18811/IMG_1398_1320x2868.png/1320x2868.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/c1/37/b3/c137b36e-26e5-6767-72b3-b79813c3b57e/IMG_1396_1320x2868.png/1320x2868.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/4d/32/be/4d32bea3-c9b0-4c27-6a91-b7b2fba5f0c1/IMG_1394_1320x2868.png/1320x2868.png)
- [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/da/57/0e/da570e58-e2f8-a3db-9fd1-791fd1ef8fef/IMG_1395_1320x2868.png/1320x2868.png)








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