Child Maintenance Dispute Assistant

Your private record for a child maintenance case

Log overnight care, payments and calls with the Child Maintenance Service, write CMS letters and keep your documents in one place. Everything stays on your phone, and the other parent doesn't need the app.

Coming soon toGoogle Play See what it does
  • Built for UK parents with a CMS case
  • For paying and receiving parents
  • More than one CMS case? Keep each one separate
  • No account, and nothing stored on our servers
The CDA home screen with Calendar, Case Manager, Letters, Wizard and Childcare tiles, the next deadline, draft letters, nights this month and recent activity Childcare Arrangements: choosing who had the child overnight and tapping the nights on a calendar Childcare History with a year graph and a month-by-month breakdown of nights with each parent The CDA calendar for a month, with a dot under each day showing whether the children stayed with you or the other parent Payment History grouped by month, with money received and sent for the year The CMS calculator showing an estimate of £63.30 a week with shared care applied A mandatory reconsideration letter with your details and CMS address filled in, ready to download or print Case Manager with folders for evidence, CMS letters, bank and payments, screenshots and other documents, and the CMS dispute pack

Everything CMS asks for, kept as you go

When something goes wrong, CMS wants dates, amounts and evidence. CDA keeps them organised and ready to send.

Overnight care

Log who had the children each night or set a weekly pattern. History by week, month or year, exported with a cover letter.

Payments

Record payments sent or received – paid in full, late, missed or duplicate – with monthly totals and a statement to export.

CMS calculator

Estimate maintenance with the published CMS rates – use the nights from your log or just your usual pattern – and compare it with what CMS charges.

Call log

Note every call with CMS – adviser, reference and outcome. Follow-up dates go straight into your calendar.

CMS letters

Templates for a mandatory reconsideration, grounds of appeal, a request for a copy of your CMS records, and complaints at every stage – to CMS, asking for a review, the Independent Case Examiner (ready to email) and your MP, found from your postcode. Your details and signature are added for you.

CMS dispute pack

Keep CMS letters, statements and screenshots sorted, then turn your records and documents into one numbered PDF for CMS or a tribunal. See a sample.

Deadlines & reminders

A calendar for hearings, deadlines and calls, with reminders before they're due – and on your monthly payment day.

CMS guidance

Plain-English steps for 28 common payment and case situations, challenging a decision, complaints and changes you must report – with time limits.

Private by design

No account, and nothing is stored on our servers. Optional fingerprint lock, plus encrypted backups – to a file, or automatically to your own Google Drive.

Case timeline

Everything on your case in date order – letters, calls, deadlines, documents, nights and payments. Star key events, add your own and export it.

Step-by-step wizard

Not sure what to do next? Answer a few questions about your problem and CDA suggests the next step, with a letter ready to open.

Support when it's hard

Free, independent help in one place, for your part of the UK – someone to talk to now (Samaritans, Shout), money and debt (StepChange, National Debtline), separation and parenting (Gingerbread, Family Lives), legal advice (Citizens Advice) and staying safe (Refuge, Men's Advice Line).

See it before you start

A sample CMS dispute pack

This is what CDA makes from your records: one PDF with a numbered index and a page number on every page, ready for CMS or a tribunal.

  • Your statement and a numbered index
  • Case timeline, with shared-care band changes
  • Night-by-night childcare schedule
  • Payment statement, calls and key dates
  • Your documents, each one numbered
Browse the sample Download PDF

Made-up parent and records, marked "Sample" on every page.

Three pages of a sample CMS dispute pack: the front page with its index, the overnight childcare schedule and the payment statement

Your own record – not a shared app

Co-parenting apps need both parents to join. CDA is for keeping your own clear, dated record, especially when things are disputed.

CDATypical co-parenting apps
Who uses itJust youBoth parents
Where your data livesOn your phone, plus any encrypted backups you chooseOnline accounts
Overnight care, the CMS wayYesUsually not
CMS letters, calls and time limitsYesUsually not
Evidence ready to sendExports with a cover letterRaw logs

Simple pricing, 7 days free

Try everything free for 7 days, then choose a plan. Cancel any time in Google Play.

6 months

£14.99

£2.50 a month

  • Every feature
  • 7-day free trial
  • Renews every 6 months

12 months Save 17% vs 6-monthly Launch offer

£24.99 £22.49

first year (£1.87 a month), then £24.99 a year

  • Every feature
  • 7-day free trial
  • Renews every 12 months

10% off your first year for new subscribers who choose the 12-month plan by midday on 16 January 2027.

Plans renew automatically until cancelled; you'll get a reminder before the trial ends and before each renewal. If a plan ends, you can still view and export all your records – nothing is deleted. Prices include VAT.

Your record, ready when CMS asks

CDA is coming soon to Google Play. Questions in the meantime? Email support@cdaapp.co.uk.

Coming soon toGoogle Play