Try it before you sign in
A sample workbook for two made-up people, Alex and Sam. Switch between them to see how the private area changes, change who took a chattel, flag a line, ask Claude to check a receipt, share bank lines, and watch the history grow. Nothing you do here is saved.
Both of you see this. Every line says where its number came from.
| Starting figure | Proposed | $100,000.00 |
| House costs paid alone | From shared expenses | -$18,000.00 |
| Half of joint card debts | Calculated | -$1,500.00 |
| Half of the chattels difference | From Chattels tab | -$475.00 |
| Figure after deductions | $80,025.00 |
This is arithmetic on the figures entered, not a legal assessment. Change who took a chattel, or share more expenses from the Private tab, and watch this update.
How it fits together
The path, start to finish
- 1
Sign in
Email code. Your own login, never a shared one.
- 2
Safety questions
Private to you. Support links. You can stop here.
- 3
Record
Figures, files and notes. Start in your private area if you like.
- 4
Share
Invite the other person. Tick what moves across.
- 5
Check
Claude reads the document. A lawyer confirms the line.
- 6
Compare offers
Without prejudice, side by side, with the gap.
- 7
Lawyers certify
Two independent lawyers make it binding (s 21F).
Who sees what
Only you
- Bank and card imports
- Private notes
- Your private folder
- Your target and walk-away figures
- Your safety answers
- Your private history
Both of you
- Settlement figures
- Chattels, debts, house costs
- Shared expenses you ticked
- Shared evidence and file hashes
- Offers, comments, flags
- Messages and the history
Your lawyer
- Everything both of you see
- Any single private item you show them
- A button to mark a line as checked
- The export pack
The other person never sees your private column, and cannot tell what is in it. Nobody can edit or delete anyone else's lines.
Where your information goes
Your browser
Files are hashed here before upload. Quick exit lives here.
Halves on Vercel, Sydney
The pages and the rules about who can do what.
Supabase, Sydney
Figures, files and the hash-chained history. Row level security on every table.
Resend
Sign-in codes, invitations and message notices from hello@halves.nz.
Anthropic
Only when you press the check button: one file and one figure, no training.
Australia for storage and compute. No analytics inside the workbook. Deleted twelve months after a workbook closes unless an export or a hold is requested.