---
title: "Assay-KO - Reviews, Revenue and Downloads in Poland | Apple App Store"
description: "Assay is a public App Store tool for jewelry identification and a reference valuation range, based on photographs and notes you submit. Anyone may purchase and use it — no invitation and no company ac"
---

# Assay-KO — Poland

![Assay-KO App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/80/ea/6c/80ea6c7e-c8b8-93c5-b059-af0a32dd4d06/AppIcon-0-0-1x_U007epad-0-1-85-220.png/434x0w.png)

**Developer:** [江维 李](https://apptail.io/developer/developer-ekOAIc)
**Category:** Lifestyle
**Rating:** N/A (0 ratings)
**Price:** 499.99 zł
**Bundle ID:** com.knowonly.Assay
**Store:** Apple App Store
**Country:** Poland
**Version:** 1.0 (released 2026-09-20)
**Original Release:** 2026-09-20
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/pl/app/app/id6809536498)
**AppTail Page:** [https://apptail.io/app/assay-ko-CgJC/poland](https://apptail.io/app/assay-ko-CgJC/poland)

## Assay-KO Description
Assay is a public App Store tool for jewelry identification and a reference valuation range, based on photographs and notes you submit. Anyone may purchase and use it — no invitation and no company account.

Submit clear images of the piece, hallmarks, and any existing paperwork. Add an optional short video and notes. Track your submissions on this device.

When you need a formal report from an internationally recognized laboratory, Assay guides an offline mail-in process. Laboratory fees, shipping, and handling are settled outside the app — never as an in-app purchase.

Assay does not sell jewelry, run auctions, or offer consignment.

Important: opinions inside Assay are preliminary and for reference only. They are not certified laboratory reports or insurance appraisals.

## Assay-KO Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/b7/01/76/b70176d4-81a0-1c02-e486-d8961a21f0a1/01-cover.png/1284x2778.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/78/e4/31/78e4319f-4a3d-1799-8834-82eb77ed7996/02-cases.png/1284x2778.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/60/40/f0/6040f02d-e7ca-e61c-3199-2abfc95db83f/03-certs.png/1284x2778.png)




## Assay-KO Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Top Paid | Poland | Lifestyle | #5 |
| Top Grossing | Poland | Lifestyle | #44 |
| Top Paid | Poland | Overall | #173 |




---

## About AppTail

[AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. Track your app's performance, discover ranking keywords, monitor competitors, and analyze market trends.

- [Search Apps](https://apptail.io)
- [Top Charts](https://apptail.io/top-iphone-apps)
- [Sign Up for Full Access](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=footer)

*Data provided by [AppTail](https://apptail.io) - Mobile App Intelligence Platform*