Privacy Policy

Effective Date: 22 October 2026

1. Introduction

G'day! Welcome to MemoryMateRix, your private notes app and offline organiser. This Privacy Policy explains how the MemoryMateRix app handles your information. We want to be completely upfront: we don't collect your personal data, MemoryMateRix doesn't send it anywhere, and we never will. There are three optional exceptions, each one your choice: cloud voice recognition, which is off by default (Section 8), a Premium purchase through Google Play, and the feedback form (both in Section 9).

MemoryMateRix is built on a simple principle: your memories stay yours.

2. Who We Are

MemoryMateRix is developed by Michael (an independent developer). If you have any questions about this policy, you can contact us at:

Email: hello@memorymaterix.com.au

Website: memorymaterix.com.au

3. Data We Do Not Collect

To be crystal clear, MemoryMateRix does not transmit, share, sell, or analyse any of the following:

• Your private memories or notes

• Your private contacts

• Your private calendar events

• Your private lists or reminders

• Your voice recordings or voice commands (see Section 8 for the optional cloud voice recognition setting)

• Your location

• Your device identifiers or advertising IDs

• Any usage analytics or behavioural data

There are no third-party analytics SDKs, advertising networks, or tracking libraries in this app.

4. Data Stored on Your Device

All data you enter into MemoryMateRix is stored exclusively on your own device. This includes your:

• Private Memories and notes you save

• Private Contacts you add

• Private Calendar events you create or import

• Private Shopping lists and list items

• Private Reminders and scheduled notifications

• Your app settings and preferences

This data never leaves your device unless you choose to create a manual backup (see Section 7). It is encrypted using a long, random key that is created on your phone and kept in its own secure hardware (the Android Keystore). Backup files are encrypted separately, with a password you choose.

5. Permissions We Request and Why

MemoryMateRix requests the following device permissions. Each one is explained plainly below.

Microphone

Used only so you can enter data or speak to Rix using your voice. The microphone is only active when you press a mic button or speak to Rix. By default, voice processing happens on your device using Android's offline speech recognition. If you choose to turn on cloud voice recognition in Rix Settings, your phone's speech service (usually Google's) may send your voice to its servers to turn it into text (see Section 8).

Contacts (Read only)

Used to allow you to read your existing Contacts from your phone’s system Contacts with MemoryMateRix. You can easily add these as Private Contacts. Once imported, those contacts are stored in your encrypted local vault. You may then choose to delete the originals from your system contacts to make them fully private. MemoryMateRix does not upload or share your Contacts with anyone.

Calendar (Read only)

Used to allow you to read your existing Calendar Events from your phone's system Calendar with MemoryMateRix. You can easily add these as Private Events. Once imported, those Events are stored in your encrypted local vault. You may then choose to delete the originals from your system calendar to make them fully private. MemoryMateRix does not upload or share your Calendar data with anyone.

Notifications

Used to deliver reminders, private event notifications and the Daily Digest you set within the app. Notification content is generated locally on your device and is not transmitted anywhere.

Alarms and reminders (exact alarms, optional)
Lets your reminders, alarms, private event notifications and Daily Digest arrive at the exact time you set. This is optional. If you don’t allow it, they still work, but Android may deliver them a little early or late while your phone is saving battery. You can turn it on or off at any time in Settings. They are scheduled locally on your device and nothing is transmitted.

Display over other apps
Used so a reminder can appear on screen even while you are using another app, so you don’t miss it. MemoryMateRix only uses this to show its own reminders. It cannot see or read what is on your screen or in other apps.

Opening your dialler, messaging and email apps (no permission needed)

When you ask Rix to call, message or email one of your Private Contacts (e.g. "Call John", "Message Sarah" or "Email Sarah"), MemoryMateRix opens your phone's dialler, messaging or email app, ready for you to call or send. This does not need any phone or SMS permission. You make the call or send the message yourself. MemoryMateRix cannot make calls or send messages on its own, and it does not read or log your calls, messages or emails.

6. Contact & Calendar Privacy, How It Works

MemoryMateRix gives you three ways to use your existing contacts and calendar events privately:

Option A: Full Privacy

Copy the contact or event into MemoryMateRix, then delete the original from your phone's Contacts or Calendar app. The information then exists only in your encrypted MemoryMateRix vault, and it no longer syncs to Google, Apple, or any other cloud service.

Option B: Shared but with Private Notes

Keep the contact or event in your phone's system apps (so it remains available for sharing or syncing), but add private notes to it inside MemoryMateRix. The contact or event remains in your system, but your private notes about it are stored only in your encrypted vault and are never synced or shared.

Option C: Shared but with Private Copy

Keep the contact or event in your phone's system apps (so it remains available for sharing or syncing), but make a private copy inside MemoryMateRix. The contact or event remains in your system, but your private copy is stored only in your encrypted vault and never synced or shared. You can add additional private information. Rix uses this copy, as you can, to make calls, send messages or email.

This three-tier approach gives you flexibility. You choose what level of privacy is right for each piece of information.

7. Backup and Recovery

MemoryMateRix includes Manual and Auto-Backup & Restore features. When you create a backup:

• Your Vault Manual Backup file is saved to your downloads folder. You choose where your Auto-Backup file is saved.

• The Backup file remains encrypted and password-protected

• Save your Backup file to multiple external locations e.g. USB stick or PC

• MemoryMateRix does not upload Backups to any cloud service

It is your responsibility to manage where your Backup file is stored. If you choose to move it to a cloud storage service yourself, that is your decision and falls outside the scope of this app. We recommend keeping backups in a secure, private location.

If you uninstall MemoryMateRix without creating a backup, your data is permanently deleted from your device and cannot be recovered.

8. Voice Processing

On Android 13 or newer, with cloud voice recognition off (the default), your voice is turned into text on your phone using an offline speech pack.

On Android 12 or older, or on phones without an offline speech pack, voice input needs cloud voice recognition, which you can turn on in Rix Settings. When it is on, your phone's speech service (usually Google's) may send the sound of your voice to its servers to turn it into text, under that service's own privacy policy. Only your spoken words are sent. Your memories, contacts, events and lists are never sent.

MemoryMateRix does not record or store your voice either way.

9. Purchases, Reviews and Feedback

Premium purchase: MemoryMateRix is free to use. Premium is an optional one-off in-app purchase made through Google Play. Google processes the payment and keeps the purchase record under Google's own terms and privacy policy. MemoryMateRix does not receive or store your payment details. The app asks Google Play whether you own Premium, and keeps only that yes or no answer on your phone.

Promo codes: If you are given a promo code, you redeem it through Google Play, in the same way as a purchase. MemoryMateRix does not see who redeemed a code.

Rating the app: MemoryMateRix may occasionally ask whether you would like to rate it. The rating window is provided by Google Play, and anything you submit goes to Google Play under Google's own terms. MemoryMateRix does not see your rating or review.

Feedback form: The "Share your feedback" button opens an online form hosted by Tally (tally.so) in your web browser. Anything you type there, including the optional email address and phone details, is sent to us through Tally and is handled by Tally under its own privacy policy. It is completely optional and nothing is sent unless you press Submit. We only use your email to reply to your feedback, never for marketing.

10. Enhanced Privacy

Private by design;

Your data never leaves your device, unless you choose to create a backup
Your data is encrypted on your device
No cloud storage and no account
Screenshot protection, on by default (it is off while you have screenshots temporarily unlocked in Settings)
The clipboard is cleared after pasting on some screens
Voice processing on your phone by default (cloud voice recognition is optional and off by default)

11. How to delete data

Uninstalling MemoryMateRix deletes all data in the app. Then delete any MemoryMateRix backup files from your Downloads folder, and from wherever you chose to save Auto-Backups.

12. Children's Privacy

MemoryMateRix is not directed at children under the age of 13. We do not knowingly collect any information from children. The app itself collects nothing from anyone, whatever their age. The only things that can leave the phone are the optional features in Sections 8 and 9.

13. Changes to This Policy

If we ever update this Privacy Policy, we will update the Effective Date at the top of this document and notify users via the app. Because we do not collect contact information, in-app notification is our primary method of communication.

We do not anticipate material changes to this policy, as our core commitment, that your data stays on your device, is fundamental.

A note from Michael

MemoryMateRix will donate 25% of profits to dementia research. Your support of this app directly contributes to that cause. Thank you for trusting us with your memories. We take that trust seriously.