Brevo.

Brevo is your private home baking calibration studio. Log oven temperature offset tables for baking recipes, track material spending habits, save a journal diary, and chart weekly balance trends — all on your device with no account, no cloud, and no feed. **Oven offset tables** Register each recipe, enter target bake temperature, oven dial setting, and optional probe readings. Brevo computes your offset live and builds a multi-row calibration table you can revisit before every bake. Save to update the recipe chip badge instantly. **Material spending** Log spend slips with merchant, amount, and category chips. HeatPulse turns your week into a donut breakdown so you see where flour, dairy, and tools actually go. **Bake journal** Write reflective entries with mood tags, finished-bake photos, and spoken notes — separate from structured offset logs. **Weekly balance trends** The HeatPulse dashboard shows today's snapshot counts and a donut chart with tap-through category detail. Export a weekly summary card to your photo library when you want a shareable snapshot. **History archive** CrumbArchive lists every offset table, spend slip, and journal entry in one chronological feed with searchable filters and full detail pages. **Privacy and data** All data stays on your iPhone. Photos and recordings are stored in the app sandbox using relative paths. No tracking, no server sync. **In-app purchases** Crumb Coins are optional consumable credits for extra recipes, saves, and chart exports after free monthly quotas. Purchases are handled securely through the App Store.