
Mostura: Homebrew Beer
Brewing recipes & calculator
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Free
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About
Mostura follows your homebrew from start to finish: recipe, brew day, fermentation, packaging and tasting.
RECIPES
• Build a recipe and see OG, FG, IBU, color and ABV calculated as you type, with the style ranges.
• Start from one of the 12 recipes in the library, from first batch to more adventurous, all-grain or extract.
• Scale the volume, keep versions and compare what changed.
• Share a recipe as a file with another brewer.
BREW DAY
• Checklist before you start, with an inventory check.
• Focus mode: one step per screen, timers that keep running with the app closed, alerts for every boil addition and progress on the Lock Screen.
• Short tips on every step, more detailed on your first batch.
• Measurements as you go and the real efficiency of your system.
FERMENTATION AND PACKAGING
• Gravity readings with a chart, estimated finish and temperature alerts.
• Fermentation profile with steps and dry hops, with reminders.
• Bottling or kegging with the priming math and the date it will be ready.
• Tasting notes with rating, comments and photos; what to change becomes a tweak for the next version.
INVENTORY
• Malts, hops, yeasts and other ingredients, with expiry dates and automatic deduction for each batch.
• "What You Can Brew" shows what you can make with what you already have, and a shopping list for what is missing.
TOOLS
• Calculators for ABV, priming, strike water temperature, hydrometer correction, refractometer, dilution and water salts, each one explaining the math.
• Glossary and troubleshooting guide, from stuck fermentation to off-flavors.
YOUR WAY
• Metric or imperial units, SG or °Plato, SRM or EBC, °C or °F.
• Everything stays on your iPhone: no account, no sign-in, works offline. File backup whenever you want.
For adults of legal drinking age. Please drink responsibly.
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What's New in Mostura
1.0
October 28, 2026






