Last updated 15 August 2026. Kiokonaki is made by one person, Diogo Dias.
Kiokonaki is a to-do app. It stores the things you ask it to remember, and nothing else. There is no advertising, no analytics, no tracking, and nothing is sold or shared for marketing. No third-party analytics or advertising code exists anywhere in the app.
Task content is end-to-end encrypted. It is encrypted on your device with a key derived from your passphrase, and the key never reaches the server. Encrypted before leaving your device:
Some fields stay readable by the server, because something server-side has to act on them:
Two honest exceptions.
Photos are not end-to-end encrypted. They are stored so that only your account can read them, but unlike task text they are not encrypted with your key. Do not attach a photo of anything you would not want stored on a server.
The home-screen widget stores task titles unencrypted on your own phone. A widget cannot ask for your passphrase, so it reads a small plain copy of your overdue task titles kept in the app's own storage on the device. This never leaves your phone and is not sent anywhere. If you do not want it, do not add the widget.
Because the server cannot read your task titles, the notification it sends contains no task content at all. It says "Reminder due now — tap to view." Your device fills in the real title after you open the app. If you see a title on the lock screen, that came from your own phone, not from the server.
These companies process data on the app's behalf. None of them are given your data for their own marketing.
Your task content cannot be recovered. That is the point of end-to-end encryption: nobody, including the developer, holds a copy of your key. Keep your passphrase somewhere safe.
Your tasks stay until you delete them or delete your account. Completed tasks stay in the DONE archive until you clear them. Photos attached to a task can be set to purge automatically; otherwise they are kept with the task.
You can delete it yourself, from inside the app: ACCOUNT → DELETE ACCOUNT. It asks twice, then removes your tasks, attached photos, settings, reminder address, encryption key and the sign-in itself. This happens immediately and cannot be undone.
Tasks that somebody else owns and shared with you are not deleted, because they are not yours to delete. You are simply removed from them.
If you cannot reach the app, email tintahollo@icloud.com from the address you signed up with and it will be done within 30 days, normally much sooner.
You can also ask for a copy of everything stored about you at the same address.
Kiokonaki is not directed at children under 13, and accounts are not knowingly created for them.
While the app is in TestFlight beta it is under active development. Things may break, and data loss during the beta, while not expected, is possible. Keep anything you cannot afford to lose somewhere else as well.
If this policy changes in a way that affects what is collected, the date at the top changes and the app will say so.