The complaints are real: monthly invoice caps, price hikes right after subscribing, paying $25 a month to send PDFs. But several small developers are already building the generic version. Build the narrow one.
The gap it found
Solo tradespeople can't get an app that just lets them invoice from the truck, because every option either caps how many they can send, raises the price after they subscribe, or buries invoicing in a $59+/month suite.
How to win
“Unlimited quotes and invoices for one-person trade businesses. One price that never goes up, and it works with no signal.”
What customers said
“Context: I keep hearing from solo plumbers/electricians/HVAC techs that Jobber and Housecall Pro are too expensive and too complicated for one person, and ServiceTitan is completely out of reach.”
“QuickBooks is solid for the accounting side but overkill if you just need quote-to-invoice.”