Start session
Create a session in the app. Your device will control the shared page number.
PAGE DISPLAY FOR CLASSROOMS AND READING GROUPS
The current page number.
For thewhole class.
One book, many learners, one shared page number. With the Android app SendNumber, you control the page display in class, in courses, or in reading groups. Connected devices show the current number in real time.
For Android · One app. One shared status.
SENDNUMBER/ DEMOSync
Your controller128
Display 01128
Display 02128
Change the page number and watch both example displays update. Local demo, not a real session.
A CONTROLA SHARED REFERENCE
MORE TIME FOR CONTENT.Join via QR codeReal-time updates
01 / The Principle
Flip together.
From the first connection to the next page: three simple steps for a shared view.
Connect group
Share the QR code or the 6-digit session ID. Other devices will join your session.
Follow together
Change the number with + and −. All connected displays update to the new page number in real time.
02 / Your Display
Space for
easy readability.
Whether at the front of the classroom or on your own device: adapt the display to your learning situation.
Select a preset to test the text size.
Your shared page128
80–500 px · Preview scaled down
FOUR DISPLAY STYLES IN THE APPClassic / Minimal / Card / Fullscreen
Access on your terms
Protect entry with an optional password if needed.
Pause without restarting
Pause and resume the session without disconnecting devices.
Flexible continuation
Quickly rejoin your last session and switch between controller and display as needed.
SENDNUMBER / APP INSIGHTS
Control, monitor, and stay in sync
The provided app recordings show the controller and two views of a shared page number.
Real Android screenshots of the multilingual test version, using a local demo session. The current Google Play version may differ.
IN PRACTICE
A page display for your class
When everyone is working with the same materials, a visible page number is often enough for orientation. Here is a possible workflow for a shared reading phase – from preparation to discussion.
Before class: check the correct edition
Determine which book or script you are using. Different editions may have different page numbers. SendNumber transmits the number, not the book content; learners keep their own copy in front of them.
To start: a session for the learning group
As a teacher, start a session and share the QR code or the 6-digit session ID. Participants join via the app and use their device as a display. An optional password can protect access.
While reading: keep the reference visible
Adjust the page on the controlling device using + and −. As you move through the text, the display follows on the connected devices. Test the text size from the learners' seats; not every distance requires the same layout.
During discussion: pause intentionally
Pause the session for a discussion and then resume it without disconnecting the devices. Audio signals for number changes are optional – decide if they support your reading phase.
03 / Shared use
For the moments
when everyone is reading along.
Classroom
A visible page number for collaborative work with the textbook.
Reading groups
Everyone finds the right spot – and stays on script.
Courses
A shared reference for scripts and course materials.
Presentations
Keep track of the current page across multiple displays.
04 / Good to know
One more
question?
Does everyone need to use the same book edition?
For a shared page reference, material page numbers should match. With different editions, page 128 might be a different text passage; SendNumber does not sync book editions.
Can I send a textbook or PDF to the class?
SendNumber shares the current number between connected devices. Distribute books and files separately. The app is not a PDF delivery service or an e-book library.
Is the app only for schools?
Language courses, professional training, and reading groups can also work with a shared page number. The key is using the same reference point in your materials.
What is synchronized between devices?
SendNumber synchronizes the current page number. One device controls the number, and connected displays show the same reference. Books, documents, and presentation slides are not transferred.
How do participants join a session?
Via the QR session code or by entering their 6-digit session ID in the app. If you set an optional password, it will be required to join.
How can I customize the display?
Set the text size between 80 and 500 px and choose your own text and background colors. Styles include Classic, Minimal, Card, and Fullscreen, plus presets like Chalkboard, Whiteboard, Night Mode, and High Contrast.
Can page changes be audible?
Yes. You can enable optional sound signals for number changes in the app.
Is the demo here a real session?
No. The demo shows the principle locally in your browser. For sessions with connected devices, use the SendNumber app. The display is a simplified illustration, not an app screenshot.
Ask fewer questions.
Learn together more.
Get your study group on the same page with SendNumber.