Используйте приложение APKPure
Историческую версию SMS Alert можно получить на Android
Отправляет SMS-оповещение экстренным контактам, введенным пользователем.
Sends SMS alert messages to emergency contacts entered by the user. In case of emergency the user pushes a button to send SMS messages to pre-identified contacts. The messages are sent all at once to all the emergency numbers. No SMS messages are received or processed by this app at all, and user privacy is preserved. This app does not share any information with any other party, or any servers, it only sends SMS messages.