Parent communication app
The common thread is not size. It is that the message matters more than the medium, and that the people who need it already know who you are.
Nothing that could identify anybody
Subscribing needs no account, no email address and no phone number. What a subscription actually holds is a random identifier the app generated, a platform, an app version, a language and a time zone — coarse enough that hundreds of millions of people share one. There is no name, no contact detail, no advertising identifier and no location, and there is no export that would let an operator build one. You cannot leak a list you never collected.
One handle, printed once, permanent
A channel lives at drop.top followed by its handle, and that address never changes. It cannot be edited after creation, because it ends up on a poster in a school entrance, on a festival gate and inside a QR code somebody has already laminated. The page behind it explains what the channel is, what it asks a phone for, and how to subscribe — so a stranger reading a poster can decide before installing anything. We generate the QR code for you, server-side, and it is never sent to a third-party image service.
A channel asks. The phone decides.
Every channel declares what it would like to be able to do: make a sound, show a banner, override Do Not Disturb, take over the screen, speak the text aloud. Each subscriber grants those one at a time, on their own handset, and can take any of them back later without unsubscribing. Nothing a channel asks for is granted by asking. The loudest thing an unpermitted channel can achieve is an ordinary notification — which still arrives, and still says what you wrote.
Questions, answered plainly
What do you collect about somebody who subscribes?
A random identifier the app generated, a push token, the platform, the app version, the language and the time zone. No name, no email address, no phone number, no location, and no advertising identifier. Subscribing needs no account at all.
Can I change my handle later?
No, and that is on purpose. It gets printed on posters and encoded into QR codes, and a handle that could change is a handle that turns somebody’s laminated sign into a dead link. Choose it the way you would choose a street name.
Can you guarantee my alert will make a sound?
No, and nobody honestly can. Whether it makes a sound is decided on the handset by what that subscriber granted your channel and by their own settings. What we guarantee is that the alert reaches every subscribed device. Any service promising more is either wrong or is describing a carrier cell broadcast, which is a different thing entirely.
Do subscribers need an account?
No. They install the app, subscribe to a handle, and that is the whole of it. Only the person running the channel signs up for anything.
Say it once. Every subscribed phone gets it.
Free up to 100 subscribers, no card to start, and the handle is yours permanently.
Start a channel