平台：reddit.com 日期：2026-10-17
“Right now he just does paper invoices and keeps the transfer copy in a folder. He wants to be able to keep record of filled invoices/estimates on his phone and also be able to fill/print invoices out in his van from a portable bluetooth printer.”
下一步
先判断它证明的是“有人抱怨”还是“有人付费”；再找 3 条独立来源，整理成机会卡。不要因为一条热帖就做产品。