Barm: Sourdough Starter Log
A calm sourdough companion. Peak prediction for every starter, a feeding log, a bake planner that works backwards from bake time, and the calculators bakers actually use.
Know when it peaks
Log a feed and mark the rise with a rubber-band line. Barm learns how fast your starter grows in your kitchen and predicts the peak, adjusted for room temperature.
Plan bakes backwards
Pick when you want bread out of the oven. Barm works backwards to the feed, levain, bulk, shape and bake, with every step on your Lock Screen as a Live Activity.
Calculators that speak baker
Baker's percentages, hydration with and without levain, feeding ratios and desired dough temperature, in grams or ounces and °C or °F.
Private by design
No account, no analytics SDK, no advertising SDK. Starters, feeds and photos stay on your iPhone and, if you choose, in your own private iCloud.
Widgets, reminders and iCloud
Home Screen widgets and Live Activities read a small snapshot Barm writes to a shared App Group on the device. Feed and peak reminders are local notifications scheduled by iOS. If iCloud is on, your data syncs through your own private iCloud database, which we cannot read.
Barm Pro
Barm is free for one starter, the feeding log and the calculators.
Barm Pro Lifetime is $29.99 as a one-time non-consumable purchase and unlocks Pro for the Apple ID that bought it.
Barm Pro Yearly is $14.99 per year as an auto-renewing subscription, with a 7-day free trial for eligible Apple IDs. Payment is charged to your Apple ID at confirmation of purchase. It renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period, and your account is charged for renewal within 24 hours before the end of the period.
Manage or cancel any time in iOS Settings > Apple ID > Subscriptions. Prices are shown in your local currency in the app before you confirm anything, and those figures are the authoritative ones.
A guide, not a guarantee
Peak predictions are estimates from your own feeds and rise marks. Flour, water, temperature and your starter all vary, so trust your eyes and nose too.
Legal and contact
Read the Privacy Policy and the Terms of Service. Barm is published on the App Store by VIIONR INFOTECH PRIVATE LIMITED. For anything else, email support@approtic.in.