day9 coffee

Coffee freshness, tracked

Free · Designed for iPad. Not verified for macOS.

Coffee tastes best on Day 9. Track when each bag hits peak flavor, log brews, and never guess "is this fresh?" again. Freshness, not roast date. Most coffee bags tell you the roast date. None of them tell you when the coffee actually tastes best. day9 is built around one idea: coffee has a freshness curve. It's too gassy in the first few days after roast, hits peak flavor around days 7–14 depending on the bean, then slowly declines. Roasters know this. Baristas know this. Most coffee drinkers don't — because nobody's ever made it easy to track. day9 fixes that. ADD A BAG Snap a photo of the label or enter the details manually. day9 reads the roast date, origin, and roaster, then maps out where your bag sits on the freshness curve right now and when it'll hit peak. KNOW WHEN TO BREW Get a clear signal: "too fresh," "approaching peak," "at peak," "declining." No more wondering whether yesterday's pour was off because of the grind or because the bag is past it. LOG BREWS, NOT JUST BAGS Tap to log a brew. Notice patterns: which bags taste best on which days, which roasters consistently hit your sweet spot, which origins fade fast. Your own taste history, built over time. DISCOVER ROASTERS Browse a curated directory of specialty roasters from around the world. Find new bags from operations you trust. Read why each roaster matters. WHY DAY 9? Because for most specialty coffees, that's roughly when the gas has settled, the flavors have rounded, and the bag is genuinely ready. It's a name, not a rule — every coffee is different, and day9 tracks yours specifically. NO ACCOUNTS, NO PASSWORDS Sign in with your email. We send you a link. That's it. No social logins, no data harvesting, no marketing emails. Built for people who care about coffee but don't want another app pretending to be a coffee shop. Just the timing.

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The developer, Brian Diamond, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Linked to You

    The following data may be collected and linked to your identity:

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    • User Content
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Information

Seller
  • Brian Diamond
Size
  • 2.7 MB
Category
  • Food & Drink
Compatibility
Requires iOS 15.0 or later.
  • iPhone
    Requires iOS 15.0 or later.
  • iPad
    Requires iPadOS 15.0 or later.
  • iPod touch
    Requires iOS 15.0 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
  • English
Age Rating
4+
Copyright
  • © 2026 BrianOnAI, LLC
  • Developer Website
  • Privacy Policy

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