HVAC
Organize service work, pricing, estimates, and invoices.
Professional paperwork for real field work
Estimates & invoices made simple.
Built for the people who actually do the work. Create clear customer records, professional estimates, and invoices without a subscription.
- One payment
- Works offline
- English + Spanish
A straight path from work to paid
Keep every job moving.
KAYENE keeps the essential field-service workflow focused and easy to follow.
- 01
Customer
Keep the customer details you need for the job.
- 02
Estimate
Build clear work and pricing before the job begins.
- 03
Invoice
Convert approved work into a customer-ready invoice.
- 04
Paid
Track the invoice through sent and paid status.
The real app
What you see is what you use.
These are real KAYENE Android screens—not mockups or fabricated product UI.
Made for field-service businesses
Start with the work you know.
KAYENE launches with practical service categories for HVAC, cleaning, and construction or remodeling. Other service businesses can still create their own work manually.
Cleaning
Build repeatable residential or commercial estimates.
Construction & Remodeling
Present scoped work and clear totals professionally.
Practical pricing, under your control
A useful starting point - never a rulebook.
Built-in Price Book
Start with practical service templates and adjust every price to fit your business. Suggestions are editable and are not market, legal, or accounting advice.
Custom work
Add your own work, description, quantity, price, and tax choice directly to an estimate or invoice. Reusable custom-job storage is not included in the current public version.
Customer-ready documents
Professional on paper, too.
Create clear Estimate and Invoice PDFs with readable totals and a presentation that is ready to share.
- Signature
- Graphite
- Mineral
Generated by the current KAYENE document engine with sample data.
Simple price. Full product.
$6.99
One-time purchase
- No subscription.
- No monthly fees.
- No ads.
Google Play availability is coming soon.
Offline-first by design
Your business stays yours.
KAYENE stores business, customer, estimate, and invoice information locally on your device. No KAYENE cloud account is required. The current app has no advertising and no analytics or telemetry.
No system can promise absolute security. Protect access to your device and the files you choose to share.
PrivacyEnglish and Spanish
Work in the language that fits.
Use the app interface in English or Spanish and choose a supported language for professional document labels. Your own customer names, notes, and descriptions remain exactly as you enter them.
Meet Kayene.
Built to keep going.
Kayene is the KAYENE honey badger - a symbol of persistence, resilience, and practical work. The brand is about getting the job done without unnecessary complexity.
See KAYENE at work
A closer look is coming.
The official product video will appear here after its final optimized asset is supplied.
Straight answers
Frequently asked questions
Is KAYENE a subscription?
No. KAYENE is a $6.99 one-time purchase. There are no monthly fees.
Does KAYENE work offline?
Yes. Its core customer, estimate, invoice, and PDF workflow is designed to work offline.
How much does it cost?
KAYENE costs USD $6.99 as a one-time Google Play purchase.
What businesses is it designed for?
KAYENE begins with HVAC, cleaning, and construction or remodeling service categories. Other field-service businesses can add custom work manually.
Can I create custom work?
Yes. You can add custom work directly to an estimate or invoice. A reusable custom-work library is not part of the current version.
Can I change prices?
Yes. Price Book suggestions are starting points that you can adjust for your business.
Can I create PDFs?
Yes. KAYENE creates customer-ready Estimate and Invoice PDFs that you can share.
Does it support Spanish?
Yes. The interface supports English and Spanish. Document labels can also use a supported language setting. User-entered text is not automatically translated.
Where is my data stored?
KAYENE stores its business and document data locally on your Android device. It does not require a KAYENE cloud account.
Can I back up my data?
Backup and restore are in release validation. Public recovery guidance will be added only after physical Android testing is complete.
Is KAYENE available for iPhone?
Not currently. KAYENE is being prepared for Google Play on Android. No iPhone release date has been announced.
Less paperwork. More getting it done.
Professional estimates and invoices for one straightforward price.