The major apps don't cover South Africa
Copilot Money, Monarch and Rocket Money serve US accounts, and YNAB's automatic import doesn't extend to South African banks. If you budget in South Africa you are doing manual entry regardless of what you subscribe to, so the sensible move is choosing an app built for it. Cash Compass tracks spending from Standard Bank, FNB, Capitec or a wallet of cash with no difference in handling.