Anthropic: console.anthropic.com/settings/keys
OpenAI: platform.openai.com/api-keys
You'll be billed by Anthropic / OpenAI directly per use; the app shows a cost estimate before each Formula Check so there are no surprises.
Make sure both devices are signed into the same iCloud account and that iCloud Drive is enabled in Settings. Sync usually takes 10 – 30 seconds.
AI suggestions are imperfect. Use the match score (red / amber / green) as a confidence guide and feel free to override — you can always tap “Buy original” to ignore the substitute, or expand a row to see the alternative blend.
Yes — the Inventory tab has an Export CSV button that produces a standard CSV with all of your ingredients.