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A paper notebook or a sourdough tracker app? Both work - the real difference is what each one gives you back six months later, and which one tells you when to feed.

Paper has a real advantage: nothing more honest than a flour-dusted page that's been near the dough. It also has a real disadvantage: you can't search it, you can't sort it, you can't filter feeds vs bakes, and the photos live in a separate device. Sourdough Tracker is the digital equivalent that respects what paper does well - one-tap entries, no nag, your data stays yours - while adding what paper can't: search, filtering, photos in line with the entry they belong to, and per-starter sharing. Many bakers happily run both.
The honest reason most bakers end up with a sourdough starter tracker app isn't the photos - it's the questions a notebook can't answer. Is my starter dead, or just slow? When should I feed it? A paper page holds the history, but it can't reason over it. When you ask "is my starter dead" at 7am, an app can look at your last feeds, the ambient temperature, and the rise pattern and give you a read; a notebook just shows you yesterday's handwriting. That's the line between a record and a companion.
It matters most exactly when a notebook lets you down: after a starter has sat in the fridge for weeks. The revival path - feed, warm, watch, repeat - is easy to get wrong from memory. Our guide to storing and reviving a starter from the fridge walks the diagnostic, and the app times each feed for you so you're not guessing whether 24 hours have passed.
Many of the bakers I admire run both: a digital journal as the system of record (search, photos, sharing) and a paper one for the feel of writing at the counter. Pick whichever feels alive and right; you can always export the digital one to a CSV later if you want to migrate. If you're weighing the app against other tools rather than paper, the alternatives hub lays out every comparison side by side.
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Read next
Why journaling sourdough beats memory + intuition
Why a journal is the single highest-leverage upgrade to your sourdough practice.
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"I Think I Killed My Sourdough Starter" - What's Actually Happening and What to Do
Why your starter is almost certainly just hungry - and exactly how to fix it.
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Troubleshooting a sluggish or 'dead' sourdough starter
The decision tree for reviving a starter that stopped responding.
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Sourdough Tracker vs Notes / Notion / Obsidian
Generic notes apps vs a journal that knows what a feed entry is.
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| Ours Sourdough Tracker | Theirs A paper notebook | |
|---|---|---|
Tactile + flour-friendly | ||
Searchable across entries | ||
Photos inline with entries | ||
Sortable feed vs bake feed | ||
Survives a coffee spill | Maybe | |
Share one starter w/ a friend | ||
Battery / wifi required | Yes |