Daybook

Privacy policy

In effect from October 24, 2026

The short version

  • Without an account, your log never leaves your phone.
  • With an account, your records are kept under your account and sent only to you, when you are signed in.
  • No ads, no tracking, and nothing is ever sold or shared.
  • A few anonymous counts once a day: whether the app was opened and how far setup got, and more only if you say yes. Never your words, your log or who you are, and you can turn them off.
  • If you leave a tip, Apple or Stripe handles the payment. Daybook keeps only a small supporter record, never your card details.
  • You can delete everything, and your account, from inside the app.

Who runs Daybook

Daybook is made by Jeff Smith, an independent developer. Questions about this policy or your information go to jeffreydsmith.cs@gmail.com.

Without an account

Everything you put in Daybook (your log of urges and slips, check-ins, notes, your journal, your plan, lessons, reviews and settings) is stored on your device only, or in your browser's storage when you use Daybook on the web. Daybook does not receive any of it. (The anonymous counts below, feedback you choose to send, and a tip you choose to leave, are not part of your log.)

With an account

An account is optional. When you make one, Daybook keeps:

Your records are used for one thing: sending them back to you, on your devices, when you are signed in. They are not viewed, analyzed, sold, shared, used for ads, or used to train anything.

What Daybook never collects

Anonymous counts

Daybook is built by one person, who needs to know whether people use it. So, without asking, the app sends two basic counts: that it was opened on a day (the act_ names below) and how far setup got (the setup_ names). Every other count below is kept on your phone and sent only if you say yes, in More, Anonymous counts. That page also turns all counts off, after which nothing is counted at all, and shows exactly what was sent last.

Once a day your phone sends, for days that are over, a short list of names and small numbers (each from 1 to 50), plus whether it is an iPhone, Android or the web and the app's version. The server adds them to totals for everyone, per day, and keeps nothing else: not who sent them, not your internet address, not the request. No count can be traced back to you, even by Daybook. These are every name that can be sent:

Never sent: anything you write, what led to an urge or slip, any time of day, your log, check-ins or plan, your name, email or account.

Feedback

If you send feedback from More, Daybook keeps your words, whether you were on an iPhone, Android or the web, the app's version, and when it arrived. No name and no email are sent, unless you type an address to get a reply. Feedback is read only by the person who builds Daybook and is deleted after 180 days.

Where it is kept, and how it is protected

Account records are stored with Amazon Web Services in the United States. They travel only over encrypted connections and are encrypted where they are stored. Each request is checked against your sign-in, so one person's records can never be sent to another. The server keeps short technical logs (the time of a request and any error, never the content of your records) for 14 days, to keep it running. The counts and feedback have their own store, apart from the records, with technical logs kept for 7 days.

On your phone, you can lock Daybook with Face ID, Touch ID or your passcode in Settings.

Tips and supporters

Daybook is free. A tip of $5 or more makes you a supporter, which opens sync, a safe copy of your log and the deeper stats. Everything for hard moments stays free for everyone. On iPhone you can tip with Apple's in-app purchase or on the web tip page; on the web, on the web tip page. Apple or Stripe handles the payment, under their own privacy policies (Apple, Stripe). Daybook never sees or keeps your card or bank details.

What Daybook keeps about a tip:

Delete my account removes your supporter record and the references linked to your account. The supporter record on your device stays after Delete everything, so a tip is never lost; deleting the app removes it.

Other companies

Amazon Web Services hosts the website and the account service. Apple and Google distribute the app. Apple and Stripe handle tip payments, and Apple handles Sign in with Apple if you use it. If you have chosen in your phone's settings to share crash reports with app developers, Apple or Google may send Daybook anonymous crash reports. No one else receives anything.

Ratings

At the end of setup, Daybook asks once whether you like it so far. Your answer is kept with your settings, only so it is not asked again, and is never sent as a count. If you say yes, the phone may show Apple's or Google's own rating sheet. A rating you leave there goes to the App Store or Google Play under their privacy policies; Daybook sees only what the store shows publicly.

How long it is kept, and deleting it

Your choices

You can see everything Daybook keeps in the app itself, and save your days and entries as a spreadsheet from Settings. You can change or delete any of it at any time. Wherever you live, if you want a copy of your information, a correction, or a deletion, write to us and it will be done, usually within a few days and always within 30.

Teenagers and children

Daybook is for anyone 16 or older who wants to change a habit, teenagers included. Information from people under 18 is kept and protected exactly as this policy says for everyone: never sold, shared, shown to anyone or used for ads. If you are under 18, a parent or another adult you trust can be a real help, if you choose to tell one.

Daybook does not knowingly collect information from anyone under 16. Without an account it collects nothing at all, and accounts are for people 16 and older. If you believe someone under 16 has made an account, write to us and it will be deleted.

Changes

If this policy changes, the new version is posted here with a new date. A change to what is kept or who can see it is also told to you in the app first, and never applied to what you already gave without your yes.