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CustodyBook

One-sided custody & expense journal

No accountWorks offline No adsPay once, no subscription

Log custody days, exchanges and shared expenses. Exact reimbursement math and a clean PDF you can print or share.

How to use CustodyBook

  1. Settings: set your name, the co-parent label and the expense split (their share %).
  2. Log each custody day, exchange and expense the day it happens — a dated, consistent record is easier to review later.
  3. For expenses enter the exact amount and who paid — the app computes who owes whom.
  4. Reports tab: the month summary, PDF reports (month, year or any date range) and "Copy summary as text".
  5. Settings → Backup: save a backup file and keep it somewhere safe (Files or Drive). Your record lives only on your phone.
  6. Everything stays on YOUR phone: no accounts, no messaging, no monthly fee.

FAQ

Does the other parent see anything?

No. This is YOUR one-sided record. Nothing is shared unless you export it.

Is the PDF legally binding?

CustodyBook gives you a factual, dated record of what you logged. It is not legal advice — ask your lawyer how to use it.

Support

Questions, bugs or ideas: support@getcustodybook.com. We answer within 2 business days.