What you actually need is the capability rather than a dedicated tool. Transactions arriving automatically from your bank and card feeds, categorised consistently, with a receipt attached to anything that requires substantiation. Every mainstream accounting package does all three, including receipt capture through a phone application, and using it removes the reason most people go looking for something separate.
The situation that justifies a dedicated tool is having people other than you spending money. Expense claims, approvals, reimbursements, and per person limits are the problem those products solve, and none of them exist in a business of one. If you are a solo operator considering expense software, you are almost certainly looking at a solution to a coordination problem you do not have.
The requirement that actually matters is the receipt rather than the record. Tax authorities require substantiation for deductions, and a bank line reading a supplier name is weaker evidence than an itemised receipt. Photograph receipts at the point of purchase and attach them immediately, because collecting them later is a task that never happens and paper receipts fade to blank within a couple of years.
Be careful with the categories that draw scrutiny. Meals, travel, vehicle use, and anything with a plausible personal element need better records than everything else: who was present, what the business purpose was, and in the case of vehicle use, the mileage rather than an estimate. Those are the entries that get questioned, and a contemporaneous note takes seconds while a reconstruction two years later is neither accurate nor convincing.
Review the categorisation monthly rather than annually. Automatic categorisation is good and it is not correct, particularly for suppliers you use for more than one purpose, and errors compound quietly across a year. Fifteen minutes each month checking that things landed in the right place produces a year end that requires no reconstruction, which is the actual goal.
Decide how you will handle the expenses that are partly personal before they arise, because those are where the record becomes indefensible. A phone used for both, a vehicle used for both, a home office. Each has an established method for apportioning it, each requires a contemporaneous record rather than a year end estimate, and each is examined more closely than ordinary expenses. Ask your accountant once which method applies to your situation and then follow it consistently rather than deciding retrospectively.