Your proactive
financial assistant.

For individuals, landlords and property managers

Cayn brings your bills, receipts and rental records together, flags changes, and prepares what needs doing next. You review the work and make the call.

Get it on Google Play, the App Store or the web app
Free 14-day trial on Personal and Rental plans

Watch the 2-minute film

See it in action

Meet Cayn in two minutes.

Play the Cayn launch film (2:08)
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Cayn on the web

Your whole picture.
A little more room.

Review your finances, organize rental records and work with your assistant, right in your browser. Sign in with your Cayn account. No download needed.

Open web app
Web dashboard · Sample data shown. Select the image for a closer look.

Built around your day

Your money. Your properties.
Less to keep track of.

Landlords & property managers

Keep tenant records, rent, expenses and lease documents organized by property. Catch overdue rent and prepare what needs doing next for the units you manage.

Explore rental features

Individuals

Check charges against receipts, notice bills that increase, and remember what you paid. No rental property needed.

Explore personal finances
01

Looks deeper

Past the transaction, into the receipt, the bill and the lease.

02

Learns what’s normal

Your prices, your bills, your rent cycles.

03

Notices what changed

Brings bill increases, charge differences and rent due to your attention.

04

Gets things done

Prepares the work. Acts only after you approve.

Personal finances

It remembers what you’d forget.

Connect your accounts and scan receipts, or import them through an optional Gmail connection. Cayn helps you spot what needs attention.

Receipts

More than a grocery total.

Cayn keeps your grocery receipt’s quantities, package sizes and item-level discounts together. See 16 oz strawberries, 64 fl oz oat milk and the savings on individual items, alongside the total you paid.

Sample groceries in Cayn’s native app with package sizes, quantities and green item-discount tags
Price memory

Your personal price memory.

Cayn reads the items on your receipts and remembers what you paid, store by store. Chicken breast was $3.99/lb at one store and $5.99/lb at another, and Cayn shows you where you save.

Comparable store prices for chicken breast
Recurring

Bills that creep up.

Cayn learns your recurring charges and speaks up when one jumps, like a garbage bill up 31%, with the history that shows what changed. You decide what to do next.

For landlords and property managers

Keep your rentals moving.

Properties, tenants, leases, rent and expenses in one place, with the state and local rules Cayn researched for each property.

Rental rules, researched for your property.

Cayn researches state, county and city rental requirements and connects them to your property’s location. Review source links, prepare documents and keep important notice deadlines in view.

Coverage varies by location and topic.

Four rental properties with income, expenses and occupancy
Every property’s income, expenses and occupancy at a glance.
Rental Review with Cayn matched transactions
Rental expenses found in everyday receipts, confirmed with one tap.
Tenants with rent and lease progress
Tenants, rent due dates and lease progress.
  • Rent decisions on time. Notice deadlines from your state’s rules, with Cayn’s market estimate.
  • Rent tracking. Payments matched to tenants and rent cycles, overdue rent flagged.
  • Leases and checklists. Prepared, signed and stored, from move-in to deposit return.
  • Schedule E. Income and expenses organized by property for tax time.

The Cayn assistant

Give it the outcome. It does the work.

“Tom emailed me about the rental. Get him set up.” Cayn finds Tom’s inquiry, fills in his details, applies your usual lease terms and prepares the lease to sign.

  1. 1Finds the email and pulls out the details
  2. 2Uses your terms and your state’s rules
  3. 3Prepares the lease for you to review
  4. 4Sends only when you sign and approve

Cayn does the work.
You make the call.

Schedule E report

Security & privacy

Your data, protected.

⚿We never see your bank password
◈Access is scoped to your account
◉Automated security monitoring
⊡Encrypted in transit and at rest
✋We don’t sell your data
  • Read-only bank connections
  • Read-only email access
  • AI acts only after you approve
  • Face or fingerprint unlock on supported devices
  • Bank connection tokens stay on our servers
  • Two-step sign-in codes
  • Hide your numbers in one tap
  • Delete your account anytime

Connecting Gmail is optional. Cayn’s access is read-only and used only to find financial and rental emails for these features. See our Privacy Policy.