Mayer & Watt

App showcasing the world of colored gemstones from every corner of the globe.

Mayerandwatt · com.mayerandwatt.mayerandwatt

Not rated yet 100+ downloads v2.1.3 8.9 MB Android 6.0+ PEGI 3 · Everyone

Download APK 8.9 MB All versions

Same certificate as the 2 other versions checked Details

At a glance

Latest version: v2.1.3 (20103)
Updated: Feb 19, 2025 (1 year ago)
APK size: 8.9 MB
Requires: Android 6.0+ (API 23)
CPU support: Any (no native code)
Category: Education (app)
Listed since: Sep 15, 2021 (at least)
Permissions: 2
Website: mayerandwatt.com
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

Mayer & Watt is an app by Mayerandwatt in the Education category, listed since at least September 2021. It has no native code, so it runs on any Android processor.

It asks for 2 permissions, none of them sensitive. It asks for the same permissions as version 2.1.2.

What's new in v2.1.3

Gemipedia update More amazing stones

Description

From the listing uploaded by “appupdater”.

Mayer & Watt has developed the very first mobile app to showcase available inventory from the world of colored gemstones from every corner of the globe. Designed to be used by jewelry professionals and consumers alike. Jewelers can contact us directly for pricing and availability while consumers should visit their preferred jeweler. Current stock is always shown in the best photographic images of gemstones available today, along with images of past inventory. The Gemepedia section contains an alphabetical listing of the most popular colored gemstones available in today's market, from Alexandrite to Zircon, with images, lore, history, and science. "We deal in inspiration" We added a new Favorites feature and search bar for your everyday Gem-Nerd needs.

Version history

3 versions are listed, going back to v2.1.1. Since v2.1.3 it requires Android 6.0+.

v2.1.3 LATEST Feb 19, 2025 8.9 MB TRUSTED v2.1.2 Jun 10, 2024 8.7 MB TRUSTED v2.1.1 Jun 9, 2023 8.2 MB TRUSTED

All 3 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Certificate issued to “Mayer and Watt” Not the developer's name (“Mayerandwatt”). Names in certificates can't be verified, so this alone proves nothing.
Same certificate as the 2 other versions checked

Store checks and file details

Developer signature verified Feb 19, 2025
Signed byCN=Geoffrey Watt, OU=Sales / Owner, O=Mayer and Watt, L=Maysville, ST=Kentucky, C=US
Signing certificate (SHA-1)55:51:89:0B:A0:A0:2A:F9:3D:8C:92:28:47:88:06:9D:62:4F:C9:3B
File MD5c1af251ff401951a0c764c89aa2bed94
Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (2 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (2)

Mayer & Watt requests 2 permissions, none of them sensitive.

Full network access android.permission.INTERNET
Internal broadcast protection (app-defined) com.mayerandwatt.mayerandwatt.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

Required hardware & features

Basic touch input android.hardware.faketouch

Mayer & Watt APK: questions and answers

Is there a version of Mayer & Watt for older Android phones?

The current version needs Android 6.0 or later. Version 2.1.2 is the newest listed build that installs on Android 5.1 and later. It is an old build: apps that rely on online services may no longer connect when they are this old. Get version 2.1.2 · All versions

Can I install this APK over the version I already have?

Only if it is signed with the same certificate as the copy on your phone and isn't an older version. If Android says “App not installed”, the certificates differ; uninstalling your copy first works but deletes its data unless it is backed up.

Is the Mayer & Watt APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. It is signed with the same certificate as the 2 other versions checked. After downloading, check that the file's MD5 is c1af251ff401951a0c764c89aa2bed94.