One reminder.
Every number stays active.
Keep your SIM and eSIM numbers, keep-alive deadlines, linked accounts, and reminders together—without the worry of a suspended line, reset balance, or lost login.
For iPhone and iPad · Requires iOS 18 or later
Know before a number expires.
Give each number its own keep-alive window. SIMMemo schedules local reminders before the deadline, so you have time to act.
Numbers and accounts, clearly connected.
Link every number to the service accounts that depend on it. Optional passwords stay protected in the iOS Keychain and are available only when you need them.
Your data stays in your hands.
Records are stored locally by default. Optional private iCloud sync keeps your devices up to date—no SIMMemo account and no developer-operated record server.
SIMMemo, explained
Common questions, answered clearly.
Quick facts about managing numbers, reminders, devices, and privacy with SIMMemo.
What is SIMMemo?
SIMMemo is an iPhone and iPad app for keeping SIM and eSIM numbers, keep-alive dates, linked accounts, balances, and reminders together.
Which devices does SIMMemo support?
SIMMemo is available for iPhone and iPad and requires iOS 18 or later.
Where is SIMMemo data stored?
Records are stored locally by default. Optional private iCloud sync can keep devices up to date, and SIMMemo does not require a SIMMemo account or use a developer-operated record server.
What reminders can SIMMemo provide?
SIMMemo can schedule local reminders before a number's keep-alive deadline so you have time to act.
One small reminder for every important number.