Privacy policy

Last updated 4 November 2026. Custodo is published by BufferSol Technologies. Questions: buffersoltechnologies@gmail.com.

In short: your children’s names, schedule, exchanges, expenses and notes are stored only on your phone. We do not collect them, share them or sell them. There are no ads. Custodo never contacts or notifies the other parent.

What stays on your phone

Everything you enter: first names of children, parent labels, schedule and holiday changes, exchange check-ins, expenses, journal notes and communication log entries. This data lives in a local database in the app. We cannot see it. Android’s automatic cloud backup is turned off for the app, so Google does not copy this database either.

What we collect

Data	Collected?	Details
Your records	No	Stored on your device only.
Usage analytics	Only if you opt in	Off by default. If you switch on “Share anonymous usage” in Settings → Privacy, we receive which features are used (for example “exchange logged”). Never notes, names, amounts or dates. Purpose: improving the app. Not shared. You can switch it off at any time.
Crash reports	No	Not enabled in this version.
Location, contacts, messages, photos, microphone	No	The app does not request these permissions.
Advertising identifiers	No	No ads and no advertising SDKs.

Permissions

Notifications: to remind you before an exchange. Reminders are created on your phone.
Biometrics / screen lock: to protect the app with your fingerprint, face or phone PIN if you turn on App lock. Custodo never receives your biometric data.

Optional backup (when released)

A future version may offer optional backup and restore. If you choose to sign in, we will receive your email address for account management, and your backup is encrypted on your phone before upload, so our servers store ciphertext only. This will be optional. The app works fully without an account. This policy will be updated before backup is released.

Sharing

We do not sell or share your personal data. When you create a PDF summary, it is made on your phone and only goes where you choose to share it.

Security

Any data sent over the network uses HTTPS. You can lock the app with your phone’s screen lock. Keep your phone secure: anyone who can unlock it can open the app unless App lock is on.

Your choices and deletion

You can erase everything at any time in the app: Settings → Backup & account → Erase data on this phone. Uninstalling the app also removes it. See how to delete your data.

Children

Custodo is for adults (18+). It stores only the first names a parent chooses to enter, on that parent’s phone.

Changes

If this policy changes we will update the date above and, for material changes, tell you in the app.

Not legal advice

Custodo is a record-keeping tool. It is not a law firm and does not give legal advice. Laws vary by place; talk to a qualified professional about your situation.