Daily check-in
The user taps "I'm OK" on the Today or Check In screen. A note or mood can be added, but the core action stays large and direct.
Retrace Enterprises Presents
NOD
A private safety net for welfare checks, with missed check-in escalation, and explicit emergency actions.
- Local-first
- No cloud account or backend required.
- Trusted circle
- Manual contacts and transparent alert logs.
- Explicit emergency actions
- No silent calling or continuous tracking.
Check in
Remind
Escalate
Log outcomes
Guided Check-In Flow
Simple enough for daily use. Clear enough when a check-in is missed.
NOD centers on one important action: the user confirms they are OK. If that does not happen, the app moves through a visible escalation path instead of pretending to be a rescue service.
Local reminders
Missed windows trigger local reminders, including a stronger second reminder. Quiet hours can suppress early reminder noise.
Trusted circle
Configured contacts are used for later-stage welfare alert attempts, with per-contact permissions and visible priority ordering.
Emergency contact
The final stage targets emergency contacts through the configured delivery gateway and records each attempt in the alert log.
Safety Boundaries
Designed to be helpful without becoming surveillance.
NOD's product direction is deliberately restrained. It gives people a check-in path and a trusted-contact escalation trail, while avoiding claims or behaviors that would make it feel like medical monitoring.
No continuous location tracking
Location is only considered for explicit emergency sharing and uses permissioned device APIs.
No silent contact access
Trusted contacts are entered manually, avoiding broad address-book harvesting.
No automatic emergency calls
Dial actions open the phone dialer. The user stays in control before any call is placed.
No delivery overstatement
Alert logs distinguish configured, attempted, and not-sent outcomes so the app stays honest.
Application Surface
Seven core screens with one user-centered information architecture.
Current state and quick actions
Status, schedule summary, "I'm OK", remind-later, and emergency access live together so the daily path is obvious.
Deliberate confirmation
Optional note and mood capture without making the primary OK action harder.
Stage visibility
Current stage, next escalation timing, cancel controls, and recent alert log entries.
Trusted contacts
Priority order, relationship data, and alert permissions for missed check-ins and emergencies.
Timing policy
Daily, multiple, or day-specific windows, quiet hours, pause mode, and escalation delays.
Confirmed actions
Call flows and trusted-circle alerts require confirmation before sensitive actions proceed.
Profile and accessibility
Large text, high contrast, reduced motion preference, notification settings, and local data tools.
Who It Serves
A lightweight routine for people who need a welfare signal, and the people who care about them.
NOD is suited to people who prefer living alone, those who are non-verbal, and their families and neighbours.
It is not positioned as emergency dispatch, a medical device, or a guaranteed monitoring service.
Current Build
Functional demo, with production hardening clearly identified.
This is an Android Java MVP with Room, WorkManager, local notifications, explicit emergency interactions, and a guarded delivery gateway. The next phase is quality, safety, and consent hardening before real-world production use.
Version
0.1.0
Platform
Android
Architecture
Local-first MVP
Delivery
Guarded gateway
Needs validation, lifecycle architecture work, accessibility audit, dependency review, and consent-backed messaging before production use.
FAQ
Plain answers for a safety-adjacent app.
What does NOD do?
NOD helps a user record scheduled welfare check-ins. If a check-in is missed, it progresses through reminders, trusted-contact alerts, and emergency-contact alert attempts.
Does NOD track people continuously?
No. The app avoids continuous location tracking and broad contacts access. One-time location sharing is tied to explicit emergency action.
Does NOD call emergency services automatically?
No. Dial actions open the Android dialer and require the user to place the call. The app should not be described as a guaranteed rescue system.
Is messaging production-ready?
The current build includes a guarded alert delivery gateway. Real messaging needs consent, provider setup, delivery semantics, input validation, and regional/legal review before production deployment.