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InvoiceKoi

Offline invoices, estimates and receipts for tradespeople

Business Tools Mobile App Paid

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In short

InvoiceKoi helps electricians, plumbers, builders and small trade businesses create invoices, estimates and receipts on their phone, including offline. Drafting is free; issuing documents requires a subscription.

About InvoiceKoi

InvoiceKoi is an invoice app for electricians, plumbers, builders and other small trade businesses. Create invoices, estimates, receipts and PDFs on your phone, including offline. Saved clients and rates, time tracking and reports help keep paperwork together. No account is needed for core invoicing. Setting up your business and writing drafts is free; issuing documents requires a subscription. The Android app is available on Google Play; the iPhone app is in App Store review. A separate free browser invoice generator requires no account or watermark. Built and operated by Fang in Singapore.

What problem does it solve?

It reduces invoice and estimate paperwork for small trade businesses, including on jobsites with poor or no mobile signal.

What you can do with it

Create estimates, convert estimates to invoices, generate PDFs, issue receipts, save clients and rates, track time, record expenses and payments, and export reports.

Key features

Offline invoice and PDF creation
Estimates converted to invoices
Receipts
Saved clients and price book
Time tracking
Expense receipt scanning
Payment tracking
Reports
Nine PDF templates

Capabilities

Integrations: Stripe payment links; PDF sharing through the device email and messaging apps.

Who it’s for

Electricians, plumbers, builders, contractors and other one-person or small trade businesses.

Recommended for: Sole traders and small trade businesses that invoice from a phone.

FreelancerSmall BusinessConstruction & Architecture

Not designed for

Enterprise dispatch, workforce scheduling, payroll, and a full general ledger accounting system.

Pricing

PaidSubscription (Only Paid)

Starting at: US$99.99/year or US$9.99/week. Free setup and drafts. Store prices vary by country.
Billing: Yearly
Card needed for free plan: No
Pricing page: See plans

Prices are set by the provider and can change. Always check their pricing page.