Harvest is a mature tool for anyone who bills by the hour: timer to project to invoice runs like a pipeline. Desktop and browser are reliable. The mobile app lost ground after being rewritten in React Native: the timer glitches, entries get lost, and reports and estimates are only available in the browser.
評価点：The timer-to-project-to-invoice flow works without manually copying data. Reporting is flexible and clear. Support helps you structure projects and tasks to match non-standard billing arrangements.
不満点：The mobile timer sometimes shows a stale value and hitting Start overwrites previous entries. Estimates are not available in the app only through the website. No Live Activity or Dynamic Island support to show a running timer in the background.
向いている人：Freelancers and small agencies who bill by the hour: designers, consultants, developers.
HoneyBook builds the entire client journey inside one document: quote, contract, invoice, and signature are all bundled into a smart file. Automatic payment reminders remove manual follow-up. The problem is that the mobile app is a stripped-down view editing smart files and lead forms can only be done on desktop, and opening a project in iOS frequently shows a blank screen.
評価点：Smart files combine contract, invoice, and client signature in one flow, contract templates with a solid structure built in, automatic payment reminders.
不満点：The mobile app doesn't let you edit smart files or forms anything complex requires a browser. Blank screens when opening a project in iOS, and the menu disappears behind the keyboard.
向いている人：Photographers, event planners, and designers who sell through a contract-plus-invoice flow and manage several projects at once.
FreshBooks offers a useful set of features: a time tracker that feeds hours directly into invoices, receipt scanning with auto-categorization, and mileage tracking. In practice, the mobile app doesn't sync with the web clients see a different total in the PDF than what the user sees in the app. Mileage tracking records roughly one trip in ten. Face ID doesn't persist between sessions.
評価点：Time tracker with direct billing integration, receipt scanning with auto-categorization, and a solid foundation for small-business tax reporting.
不満点：The mobile app and web show different data for the same invoice. Mileage tracking is unreliable (catches about 10% of trips). The session resets every time you open the app despite the Remember This Device setting.
向いている人：Freelancers and consultants who sell time and want to track hours inside the same tool they use to invoice.
Wave used to be the gold standard for free small-business accounting, but after a monetization pivot most features moved behind a paywall. The remaining free tier is too thin for real work. The desktop version is significantly more capable than the mobile app.
評価点：Invoice and estimate creation works well: professional PDFs, built-in late-payment reminders for clients, and a notification when a client opens an invoice. Accountants note that the bookkeeping logic is cleaner and more correct than QuickBooks.
不満点：The mobile app is a stripped-down shell: account balances are unavailable without desktop, and categorizing transactions requires scrolling the entire list from the top after each save. Bank transaction sync breaks periodically and support goes quiet.
向いている人：Freelancers and micro-businesses who need integrated bookkeeping and invoicing in one place and are okay working mostly through a browser.
Invoice Simple does one thing well: a quick invoice from your phone with an SMS notification to the client. A loyal base built up over 6+ years, but the product has been monetized aggressively: the price has tripled and the limit has shrunk to 3 invoices per month on a paid plan. That's not a bug it's a product decision that destroys value for small businesses.
評価点：SMS invoice delivery to the client directly from the app a rare feature that speeds up closing the deal on the spot.
不満点：The invoice limit is tied to your plan and can drop without warning after an update. PDF and email sending occasionally break entirely and require a reinstall.
向いている人：Mobile tradespeople (tire shops, mobile services) who need to send an invoice by text right from the job.
