Terms of Use

Last updated: 11 October 2026

These terms apply when you use the CDA app (Child Maintenance Dispute Assistant), provided by CDAAPP LTD, a company registered in England and Wales (company number 17499678), registered office 71–75 Shelton Street, Covent Garden, London WC2H 9JQ ("we", "us"). By using the app, you agree to them. If you don't agree, please don't use the app.

What CDA is

CDA helps you keep your own record of a child maintenance case and prepare letters and exports. It is an independent app. It is not part of, or endorsed by, the Child Maintenance Service (CMS), the Department for Work and Pensions or any government body.

Not legal or financial advice

The guidance, letter templates and calculator in CDA are general information to help you organise your case. They are not legal, financial or tax advice, and they may not cover your circumstances. Calculator results are estimates – your CMS decision letter is the official figure. Always check official GOV.UK guidance and your CMS letters, and get professional advice if you need it. You are responsible for what you send to CMS, a tribunal or anyone else.

Your records

Your records are stored only on your phone. You're responsible for keeping them safe – we recommend turning on the app lock and making regular encrypted backups. We can't recover data that is lost, deleted, or in a backup whose password is forgotten.

Free trial and subscriptions

• New users can try all features free for 7 days by starting a 6-month (£14.99) or 12-month (£24.99) plan through Google Play.
• You won't be charged during the trial. If you don't cancel before it ends, the plan starts and you're charged.
• Plans renew automatically at the end of each period until you cancel. You can cancel any time in Google Play → Payments & subscriptions; you keep access until the end of the period you've paid for.
• Payments, refunds and cancellations are handled by Google Play under Google's terms.
• If your plan ends, you can still open the app, view and export all your records and make backups, but you can't add or edit entries until you subscribe again. We never delete your records because a plan has ended.
• Launch offer: new subscribers who choose the 12-month plan by 12:00 noon (UK time) on 16 January 2027 pay £22.49 for their first year. After the first year the plan renews at the standard price of £24.99 a year unless cancelled. The 7-day free trial still applies – the £22.49 is charged when the trial ends. The offer is available once per Google account and can't be combined with any other offer.
• Prices include VAT and may change; any change will be shown before you're charged at the new price.

Outside services

Some features use services we don't run: Find my MP looks up your MP on UK Parliament's public website, Email to ICE and sharing open your own email or other apps, and backups can go to your own Google Drive. Their own terms and privacy policies apply, and we can't guarantee their details are always up to date – check your MP's details before you send a letter.

Using the app fairly

Please use CDA only for your own lawful purposes. Don't try to copy, resell, reverse-engineer or misuse the app.

Changes and availability

We may update the app, its features and these terms from time to time. We'll aim to keep the app available, but we can't promise it will always be error-free or available on every device.

Our responsibility to you

We provide CDA with reasonable care and skill. Nothing in these terms limits your rights under UK consumer law, or our liability where it can't legally be limited. Otherwise, we're not responsible for losses arising from decisions you make using information in the app, or from data lost on your device.

Contact and law

Questions? Email support@cdaapp.co.uk. These terms are governed by the law of England and Wales. If you live in Scotland or Northern Ireland, you can also bring a claim in your local courts.