Prevent overspending by sweeping card balances into locked savings sub-accounts

Prevent overspending by sweeping card balances into locked savings sub-accounts targets a $4.0B = 200M US credit-card holders x $20 ARPU/year (low-cost subscription model) total addressable market with medium saturation and a year-over-year growth rate of 12% fintech consumer tools CAGR.

Key trends driving demand: Open banking/APIs -- easier aggregation and control across banks and card issuers lowers integration cost and enables cross-card features.; Rising consumer credit/debt -- more consumers look for tools to limit credit exposure and avoid surprise balances.; Behavioral finance apps -- proven value of rules/automation (round-ups, pots) increases adoption for automated earmarking.; Subscription fintech monetization -- consumers are willing to pay modest fees for trusted financial control features..