AI Tone Coach · 5 free checks a day

The co-parenting app that keeps the peace — not just the record

Larkling's AI Tone Coach turns hostile messages into calm, child-focused ones before you hit send. Shared calendar, secure messaging, expense tracking and Solo Mode — free core plan, built for every kind of family.

Try Premium free for 14 days — it starts on your first export For both homes

📬 No spam · Unsubscribe anytime · Free core plan, Premium when you need it

Free core plan · Premium £6.99/mo when you need it.

Good morning, Jordan 🐦
Rowan is with you today
School Pickup — Rowan
Today · 3:00 PM
Mine
Football Practice
Tue · 5:30 PM
Shared
£86 pending split
Football boots · Alex
Review
🔒
Timestamped
Unalterable records
🤖
AI Coach
Calm tone guidance
Built for families across the US & UK

All the tools. None of the drama.

Built by listening to what co-parents actually need — not what big apps charge a fortune for.

📅
Shared Calendar

Colour-coded custody schedule, event sharing and custody change requests — all timestamped.

Free
💬
Secure Messaging

Unalterable messages that can't be edited or deleted — a timestamped, tamper-evident record of every conversation.

Free
💰
Expense Tracking

Log shared costs, request 50/50 splits, track payments and reimbursements — all fully trackable.

Free
🤖
AI Tone Coach

Checks your messages before you send and suggests calmer, more constructive wording. 5 free checks a day, or 30 a day with Premium.

5 free a day
📔
Private Journal

Timestamped private entries for your eyes only. Share with your solicitor via secure link.

Free
📁
Document Vault

Store parenting plans, court orders, medical records and school documents. Share selectively with co-parent. Free for up to 3 documents, unlimited with Premium.

Free · 3 docs
🏳️‍🌈
Inclusive by Design

Custom pronouns, flexible family structures, identity options — Larkling was built for your family, not the other way around.

Free
🗺️
Local Resources

Enter your postcode or ZIP to browse a growing directory of LGBTQ+-friendly family solicitors, counsellors and community groups.

Free
⚖️
Tamper-Evident Exports

Export timestamped, tamper-evident PDF records of messages, expenses and journals — a printable format solicitors can work with. Whether any record is accepted is a decision for the court.

Premium

Your family. Your terms.

Most co-parenting apps were built for traditional families. Larkling was built for all of them.

🏳️‍🌈
Same-Sex Couples
Inclusive language throughout
⚧️
Trans & Non-Binary Parents
Custom pronouns & identity
👶
Donor-Conceived Families
Flexible parental roles
🌈
Blended Families
Multiple homes, one app
🏡
Single Co-Parents
Solo mode — no sign-up needed from ex
❤️
Polyamorous Families
Add multiple caregivers
🧡
Foster & Adoptive Parents
All family types welcome
💪
High-Conflict Situations
AI Tone Coach & timestamped records

Up and running in minutes

Works in your browser or on Android. Nothing to install to get started.

1
Sign up free

Create your account in 60 seconds. No subscription, no hidden costs. Just your email.

2
Set up your family

Add your children, set your custody arrangement, and invite your co-parent — or use Solo Mode if they won't join.

3
Start co-parenting better

Everything documented, organised, and calm — so you can focus on what matters: your kids.

Free to use. Really.

Messaging and the calendar are always free for both parents — that's our promise. Premium starts with a free 14-day trial on your first export — no surprise bills, cancel any time.

Free
£0 / month

Everything you need for peaceful co-parenting.

  • Secure unalterable messaging
  • Shared colour-coded calendar
  • Expense tracking & splits
  • Private journal with timestamps
  • Document vault (up to 3 documents)
  • Info library for child details
  • Tone Coach — 5 free checks a day
  • Resources directory (US & UK)
  • Export messages as CSV
Sign up free

Both parents can message on the free plan. Premium covers the whole family — not per parent.

🐦

Two nests.
One family. Flying together.

Join families across the US and UK who are co-parenting with less conflict and more clarity.

Works in your browser or on Android · Free core plan

🐦
Create your Larkling account
Messaging and the shared calendar are free for both parents. Try Premium free for 14 days when you first export.
30 Tone Coach checks a day
Tamper-evident exports
Covers both homes
Unlimited document storage
Expense tracking
Unlimited children
Priority support
No thanks — I'll just use the free plan
No spam. Unsubscribe anytime.
By continuing you agree to our Terms and Privacy Policy.

You'll finish setting a password on the next screen.
🐣
Redirecting you to Larkling…
We're taking you to the app to finish setting your password.
If nothing happens in a few seconds, click here.

Two nests. One family. Flying together. 🐦
🐣

Stay in the loop

New features, co-parenting tips and Larkling updates — straight to your inbox. No spam, ever.

No spam. Unsubscribe anytime. We hate bad emails too.