Phendo

Endometriosis. Tracked.

Citizen Endo · com.appliedinformaticsinc.phendo

Not rated yet 10K+ downloads v4.0.50 96.2 MB Android 7.0+ PEGI 3 · Everyone

Download APK 96.2 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v4.0.50 (50)
Updated: Oct 1, 2026 (7 days ago)
APK size: 96.2 MB
Requires: Android 7.0+ (API 24)
CPU support: x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
Category: Medical (app)
Listed since: Oct 15, 2020 (at least)
Permissions: 19 (5 sensitive)
Website: citizenendo.org/phendo
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

Phendo is an app by Citizen Endo in the Medical category, listed since at least October 2020. It includes native code for x86 32-bit, x86 64-bit, ARM 32-bit and ARM 64-bit, so it runs on practically every phone.

Since version 3.0, the APK grew from 31.5 MB to 96.2 MB and the minimum Android version rose from 5.0 to 7.0. It asks for 19 permissions, 5 of them sensitive, including camera, record audio and read phone status and identity. It asks for the same permissions as version 3.0.44.

What's new in v4.0.50

Bug fixes and enhancements. Added "Today felt kind of like…?" question.

Description

From the listing uploaded by “appupdater”.

Welcome to Phendo, a research app designed to transform the way individuals living with endometriosis understand and manage their condition, while contributing invaluable data to advance scientific research in the field. Symptom Tracking Phendo offers a platform for users to track their symptoms. Every aspect of your experience is documented, creating a personalized health journal, from pain intensity to endo belly. Self-Management Empower yourself with the ability to record and evaluate the effectiveness of various self-management strategies. Whether it's dietary changes, exercise routines, or medication schedules, Phendo helps you track what works or doesn’t work, enabling a more tailored approach to managing your endometriosis. Collaborative Care With Phendo, you're not just managing your condition; you're actively participating in your healthcare journey. The app allows you to explore your tracked data together with your care team and make informed decisions about which treatments are most effective for you. Contribute to Research By using Phendo, you're also contributing to a larger cause. The data you provide helps researchers gain a deeper understanding of endometriosis. Your participation is instrumental in advancing our knowledge of this complex condition. Eligibility Menstrual Requirement: Must have had at least one menstrual period. Age Requirement: Must be 13 or older. For those aged 13-17, parental or guardian consent is required. Join the Phendo community today, and take control of your endometriosis journey while contributing to vital research efforts! Phendo is a research app from Citizen Endo, a research initiative at the Columbia University Department of Biomedical Informatics.

Version history

4 versions are listed, going back to v3.0. Since v3.0.44 it requires Android 7.0+.

v4.0.50 LATEST Oct 1, 2026 96.2 MB TRUSTED v3.0.44 Jun 3, 2026 84.1 MB TRUSTED v3.0.35 Aug 28, 2025 74.9 MB TRUSTED v3.0 Jul 18, 2024 31.5 MB TRUSTED

All 4 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Oct 1, 2026.
Certificate issued to “Applied Informatics” 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 Oct 1, 2026
Validated against Google Play Oct 1, 2026
Signed byCN=Phendo, OU=Applied Informatics, O=Applied Informatics, L=Newyork, ST=Newyork, C=US
Signing certificate (SHA-1)F1:6A:51:48:9E:A0:8C:58:49:49:DD:7E:AB:0F:B9:80:DB:34:0F:51
File MD5b62d6cca33080dd30bffb034b8e8caac
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 (19)

Phendo requests 19 permissions, 5 of them sensitive.

Camera Sensitive android.permission.CAMERA
Display over other apps Sensitive android.permission.SYSTEM_ALERT_WINDOW
Read phone status and identity Sensitive android.permission.READ_PHONE_STATE
Read shared storage Sensitive android.permission.READ_EXTERNAL_STORAGE
Record audio (microphone) Sensitive android.permission.RECORD_AUDIO
Access notification policy android.permission.ACCESS_NOTIFICATION_POLICY
Control vibration android.permission.VIBRATE
Full network access android.permission.INTERNET
Google Play install referrer com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
Google Play license check com.android.vending.CHECK_LICENSE
Internal broadcast protection (app-defined) com.appliedinformaticsinc.phendo.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Prevent the device from sleeping android.permission.WAKE_LOCK
Receive push notifications com.google.android.c2dm.permission.RECEIVE
Run at startup android.permission.RECEIVE_BOOT_COMPLETED
Run foreground services android.permission.FOREGROUND_SERVICE
Schedule exact alarms android.permission.SCHEDULE_EXACT_ALARM
Show notifications android.permission.POST_NOTIFICATIONS
View Wi-Fi connections android.permission.ACCESS_WIFI_STATE
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Camera android.hardware.camera
Basic touch input android.hardware.faketouch
Microphone android.hardware.microphone
Wi-Fi android.hardware.wifi

Phendo APK: questions and answers

Is there a version of Phendo for older Android phones?

The current version needs Android 7.0 or later. Version 3.0.35 is the newest listed build that installs on Android 6.0 and later. Get version 3.0.35 · 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 Phendo 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 b62d6cca33080dd30bffb034b8e8caac.