Connected!
DOUBLE
BUMP
Meet. Bump. Remember.
Connect with people in the real world — just bump phones twice. No QR codes. No usernames. Just a physical moment.
Download on the App StoreAndroid — Coming Soon
How it works
Three steps.
One real connection.
1
Both open DoubleBump
You and your friend each tap into the Bump screen. That's it.
2
Tap phones together — twice
The double tap is both the gesture and the proof. BLE makes sure you're within 30 cm.
3
You're connected!
Screens glow yellow. Your connection is saved — forever on your map.
⚠ Both phones must be moving. One-sided won't work.
Features
Your real-world social map.
Every bump builds a permanent memory. See your connections, where you met, and every moment you've shared.
Bump to Connect
Double-tap phones together to create a real-world connection.
No usernames, no follows — just a physical moment.
Memory Map
Every bump pins a location on your personal map.
Relive exactly where you met each person.
Encounter Memory
Add a photo and a 100-character note to each bump.
Private between you two — no public feed.
Relationship Levels
Stranger → Acquaintance → Friend → Close Friend → Best Friend → Soul Mate.
Levels unlock as you keep bumping.
Live Nearby Radar
See who around you has DoubleBump open before you bump.
Bluetooth scans up to 2 m — you see a name, then you act.
8-bit Identity
Pixel-art animations. Retro font. Every interaction is tactile and playful — by design.
Security Model
Three layers. No spoofing.
A connection can only happen if all three layers pass simultaneously.
BLE
Proximity proof — Bluetooth RSSI must exceed −40 dBm (~30 cm).
Remote spoofing is physically impossible.
BUMP
Intent proof — The double-tap gesture is required.
A single accidental nudge will never create a connection.
MOTION
Shared event proof — Motion signatures from both phones are compared.
Both devices must have experienced the same physical collision within ±400 ms.
Ready to bump?
Available on iPhone. Free to download.
Download on the App StoreAndroid — Coming Soon