天然酵母パンノート｜種と焼成の記録

Making bread with natural yeast (sourdough/levain) isn't a one-time process. A live starter requires feeding (re-feeding) every few days, and a single baking cycle—from preparation to primary fermentation, secondary fermentation, and baking—involves several hours to several days of continuous change. Searching for a recipe only returns a single result; it doesn't remember your starter feeding history or the results of each bake.

Natural Yeast Bread Notebook is a record-keeping app for natural yeast bread, documenting these "continuing processes" and guiding you to your next step.

■ Understanding Starter Feeding and Peak Conditions (The Core of This App)
You can register multiple starters and set feeding cycles for each (e.g., 1 day at room temperature, 2-3 days refrigerated). Once you record feeding, the app automatically counts down to the next feeding time and notifies you when it's time to feed. Furthermore, by recording the time from feeding to peak performance, the system predicts "almost ready to bake (near peak)" based on the average. This ensures you never run out of starter and never miss the optimal baking time.

■ Automatic Hydration Calculation
Simply add flour, water, starter, and salt, and the system calculates the baker's percentage (the ratio with flour as 100%). The key is to subtract the flour and water contained in the starter (levain) to determine the "true hydration rate" of the entire dough. The salt ratio, starter ratio, pre-fermented flour ratio, and total dough weight are all visible at a glance, making recipe reproduction and adjustment much easier.

■ Recording Primary and Secondary Fermentation and Dough Temperature
You can record the kneading temperature and the time taken for primary and secondary fermentation. Since the speed of fermentation is greatly affected by dough temperature, this is useful for reproducing the same bread the next time you bake it.

■ Compare Each Bake
Record photos of the finished product and crumb (cross-section), a 5-level rating, and notes. The calendar marks feeding and baking times, and the summary allows you to review the number of bakes per month, the number of bakes per type, the average hydration rate, and the distribution of results.

■ The Basics of Natural Yeast
Includes information on starter preparation, feeding, peak determination (float test), hydration rate, primary fermentation, secondary fermentation/over-fermentation, storage, and troubleshooting tips, each with its own source.

■ What it Can't Do (Listed First)
- There is no function to sell or mail-order bread or recipes. This is purely an app for keeping your own records.
- It does not automatically detect fermentation. Rising and peaks are estimates based on recorded time, temperature, and actual measurements. Fermentation varies depending on the flour and environment, so please check with your own eyes in the end.
- There is no automatic synchronization across devices. Records are saved only on the device used for input.

■ What It Doesn't Collect
There is no account registration or login. All records, photos, and settings for starters and baking are saved only on your device and are not sent to external servers. Please note that this app is provided free of charge, and therefore displays banner ads (Google AdMob) at the bottom of the screen. Communication with Google will occur for ad delivery. Ads will not be displayed during input screens. Uninstalling the app will erase all records, so it's recommended to save important photos in your device's photo album.

To begin, register one of the seeds you are currently growing. Each time you record feeding, the next feeding, peak feeding time, and the results of each roasting will accumulate.