Show HN: SubSweep – find recurring charges in an Australian bank statement CSV

A developer shipped SubSweep, a tool designed to surface recurring charges lurking in Australian bank statement files. The project, shared on Hacker News as a Show HN submission, processes CSV-formatted bank statements to identify subscriptions and other repeat transactions that might otherwise go unnoticed.

The tool addresses a common pain point: subscriptions accumulate silently over time, and spotting them in a wall of bank data is tedious. SubSweep automates that work by parsing transaction records and flagging patterns that match recurring charges. The service is built specifically for Australian banks and their statement formats, making it relevant to that region's banking ecosystem.

The author, jqadan on Hacker News, positioned this as a small utility to help people audit their subscriptions—a useful complement to existing subscription-tracking tools. The submission arrived with zero comments at launch, suggesting an early-stage Show HN with limited initial engagement on the platform.

Recurring charges and subscription bloat are a growing friction point for consumers. With dozens of apps and services charging monthly or annual fees, many users lose track of what they're paying for. Tools that help surface hidden subscriptions tap into real demand, though the market already includes various subscription managers and expense trackers. SubSweep's angle—direct CSV parsing for Australian statements—carves out a specific niche rather than competing head-to-head with broad consumer finance apps.