What AA apps do well
They reduce copy-paste for bank balances, mutual funds, and some loans. If your wealth is mostly in linked accounts, auto-sync is convenient.
They also keep data on their servers (encrypted or not, you are still trusting a vendor). That is the opposite of a sheet in your Google Drive.
What a Google Sheet does well
You can add ancestral property, a family gold locker, a personal loan from relatives, or an ESOP that no aggregator knows about. The model matches your life, not a product catalogue.
You can export, copy, and keep history forever. CapitalMap is a UI on top of that sheet — not a replacement for it.
A practical split
Use an app if you want daily bank-level accuracy and accept vendor lock-in. Use a Google Sheet (with or without CapitalMap) if you want a household balance sheet you own, updated monthly.
Many people do both: glance at an app for cash, and keep the real net worth trend in a Vault they control.