
DOS App
Meet real people around you. Control your visibility, get precise nearby alerts, and keep your data safe with privacy-first design.
Features
Login options
Sign in with Instagram, Snapchat, Facebook, LinkedIn, or X on iOS/Android. The chosen app appears on your profile; you can link others anytime.
Realtime Nearby
Discover people within 0–500 m with quick presets. Turn location off to be invisible.
Smart notifications
Get notified when a relevant user is nearby. Anti-spam and fair limits keep it useful.
Profile basics
Main photo shows in Nearby; more when someone opens your profile. Add age, studies, and linked socials.
Privacy controls
Instant hide switch. No background tracking unless you enable it. Minimal data collection.
Security
Firestore Rules, scoped tokens, and Cloud Functions protect user actions.
Precision engine
Dynamic radius & recency
Results are ranked by distance and freshness. Someone 80 m away seen 2 min ago ranks higher than someone 300 m away seen 30 min ago.
Movement awareness
We de-prioritize stale pings and fast passers-by to avoid “ghost” matches, and keep steady nearby profiles more visible when you linger in the same place.
How it works
Trust, performance & access
Safety commitments
- Visibility is always opt-in; quick hide switch in one tap.
- Rate-limited pings to prevent spam and stalking behavior.
- Report & block built-in; repeated abuse leads to device bans.
Performance & battery
- Location updates use adaptive intervals based on motion.
- On-device filtering reduces network calls when idle.
- Heavy logic runs server-side to keep the app light.
Accessibility & languages
- Large tap targets and tested contrast in dark/light.
- Screen-reader labels for key actions.
- English & Romanian at launch; more languages planned.
For event hosts & venues
Host mode (pilot)
Create a temporary zone so attendees can discover each other inside your venue only, during your event window.
Partner with DOS
Universities, coworking spaces, and festivals can request access to early tools and analytics.
Screens


