PhotoMetrix PRO

Colorimetric analysis in mobile devices [ http://goo.gl/WOuvGZ ]

GHELFER.NET Inc. · com.ghelfer.photometrixpro

Not rated yet 10K+ downloads v1.1.11 7 MB Android 7.0+ PEGI 3 · Everyone

Download APK 7 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v1.1.11 (47)
Updated: Sep 30, 2026 (10 days ago)
APK size: 7 MB
Requires: Android 7.0+ (API 24)
CPU support: Any (no native code)
Listed since: Oct 20, 2020 (at least)
Permissions: 7 (3 sensitive)
Website: photometrix.com.br
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

PhotoMetrix PRO is an app by GHELFER.NET Inc., listed since at least October 2020. It has no native code, so it runs on any Android processor.

Since version 1.1.7, the minimum Android version rose from 5.0 to 7.0. It asks for 7 permissions, 3 of them sensitive: camera, read shared storage and modify shared storage. It asks for the same permissions as version 1.1.9.

What's new in v1.1.11

icon replaced

Description

From the listing uploaded by “appupdater”.

This app was created in 2014 and employs Single Linear Correlation technics for univariate analysis, Principal Component Analysis (PCA) and HCA for multivariate exploratory analysis and Partial Least Squares (PLS) for multivariate calibration. The image data are acquired using the device main camera and converted in RGB histograms. In addition, apart color channels of RGB, HSV, HSL and HSI systems are used during the univariate and multivariate processing. It is possible to send by e-mail the image data, analysis data and charts. In order to validate the obtained results, the same sets of data were tested using Microsoft Excel© and ChemoStat©. The results in both applications coincided in various combinations. This app calculates: eigenvalues, eigenvectors, scores, loadings, latent variables, RMSEP, REMSEC, REMSECV using Singular Value Decomposition and other statistical methods in Multivariate Analysis . Also calculates: slope (span), intercept (off-set) and regression (Pearson product-moment correlation coefficient) in Univariate Calibration Analysis. Also available in iOS and Windows Phone. https://dx.doi.org/10.5935/0103-5053.20160182 https://doi.org/10.1002/cem.3251

Version history

3 versions are listed, going back to v1.1.7. Since v1.1.9 it requires Android 7.0+.

v1.1.11 LATEST Sep 30, 2026 7 MB TRUSTED v1.1.9 Sep 17, 2025 6.6 MB TRUSTED v1.1.7 May 18, 2024 7.6 MB TRUSTED

All 3 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Sep 30, 2026.
Certificate issued to “-” This is the certificate of the Google Play version.
Same certificate as the 2 other versions checked

Store checks and file details

Developer signature verified Sep 30, 2026
Validated against Google Play Sep 30, 2026
Signed byCN=Gilson Helfer, OU=-, O=-, L=Santa Cruz do Sul, ST=RS, C=55
Signing certificate (SHA-1)FB:13:7B:CB:95:C2:48:AF:9C:A9:77:6D:91:03:1F:F9:6C:3F:2F:39
File MD5880ca4c68e1abdb68dcad044b56bfbd2
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 (7)

PhotoMetrix PRO requests 7 permissions, 3 of them sensitive.

Camera Sensitive android.permission.CAMERA
Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
Read shared storage Sensitive android.permission.READ_EXTERNAL_STORAGE
Full network access android.permission.INTERNET
Internal broadcast protection (app-defined) com.ghelfer.photometrixpro.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
View Wi-Fi connections android.permission.ACCESS_WIFI_STATE
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Camera android.hardware.camera
Camera autofocus android.hardware.camera.autofocus
Basic touch input android.hardware.faketouch
Landscape screen android.hardware.screen.landscape
Portrait screen android.hardware.screen.portrait

PhotoMetrix PRO APK: questions and answers

Is there a version of PhotoMetrix PRO for older Android phones?

The current version needs Android 7.0 or later. Version 1.1.7 is the newest listed build that installs on Android 5.0 and later. It is an old build: apps that rely on online services may no longer connect when they are this old. Get version 1.1.7 · All versions

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

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is the PhotoMetrix PRO APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. It is signed with the same certificate as the 2 other versions checked. After downloading, check that the file's MD5 is 880ca4c68e1abdb68dcad044b56bfbd2.