# GOA

> Grading Owl is the official mobile authentication tool of GOA

Canonical page: [https://chrome-stats.com/d/com.gradingowl](https://chrome-stats.com/d/com.gradingowl)

## Overview

- **ID:** `com.gradingowl`
- **Platform:** Android
- **Type:** Android app
- **Status:** Removed
- **Publisher:** GRADING OWL
- **Category:** TOOLS
- **Downloads:** 59
- **Version:** 1.6.1
- **Last updated:** 2024-09-18
- **First published:** 2024-09-11
- **Publisher country:** HK
- **Size:** 34 MB
- **Data as of:** 2026-05-09
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.gradingowl)
- **Website:** [https://gradingowl.com/](https://gradingowl.com/)
- **Privacy policy:** [https://gradingowl.com/privacy](https://gradingowl.com/privacy)

## Description

Grading Owl is the official mobile authentication tool of Grading Owl Authentication (GOA). It verifies the authenticity of a GOA-graded card.<br><br>1. NFC and Certification Number Check<br><br>Each GOA-graded card is embedded with an NFC chip which stores an unclonable cryptographic authenticator of the card.<br><br>With an easy tap on the phone, users can easily access the grading information of a GOA-graded card. Users can also check the information by inputting the certification number manually.<br><br>2. Activity<br><br>Upon checking the record of each GOA-graded card, the app will record the users&#39; history. Users can revisit search records through the &quot;Activity&quot; page.

## Permissions and access

### Permissions

- `android.permission.INTERNET`
- `android.permission.NFC`
- `android.permission.VIBRATE`
- `com.gradingowl.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.gradingowl)