Keep everyone on the same page – literally

SendNumber synchronizes page numbers in real-time across multiple devices. One device controls, all others display – perfect for classrooms, presentations, and group activities.

What You Can Do
Create Sessions
Start a session in seconds, share a QR code, and connect unlimited devices wirelessly.

Control Page Numbers
Use simple +/- buttons to navigate. All connected devices update instantly in real-time.

Join Sessions
Scan the QR code or enter a 6-digit session ID to join any active session immediately.

Customize Display

Adjust font size from 80px to 500px
Choose custom colors for background and text
Select from multiple display styles: Classic, Minimal, Card Format, or Fullscreen
Apply design presets: Chalkboard, Whiteboard, Night Mode, or High Contrast
Password Protection
Secure your sessions with optional passwords to control who can join.

Sound Notifications
Enable optional sound alerts when page numbers change for better awareness.

Pause & Resume
Pause sessions during breaks without disconnecting participants.

Multiple Participants
Connect multiple devices simultaneously – perfect for group learning and large presentations.

Quick Reconnect
View and rejoin recently used sessions with a single tap from the home screen.

Switch Roles
Use any device as controller or display – switch anytime as needed.

Key Features
No registration required
No personal data collected
QR code for instant joining
Real-time synchronization
Works on Android & iOS
GDPR compliant
Auto-delete after 24 hours
Multi-language support (English & German)
Perfect For
Teachers keeping students synchronized during lessons
Presenters controlling multiple screens
Book clubs reading together remotely
Workshops guiding participants through materials
Training sessions with multiple attendees
Languages
English (complete localization)
German (vollständige Lokalisierung)
Auto-detect system language
Download SendNumber now and experience seamless page synchronization