Comparison

Fermenticus Brew Log vs BrewingCalc

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Fermenticus Brew Log

This app is a comprehensive logbook, calculator, and recipe formulator for homebrewers and small craft brewers. It helps you input ingredients, perform calculations for gravity, color, and bitterness, and manage your brewing recipes.

Highlights
  • Recipe formulation and storage
  • Ingredient database
  • Automatic gravity, color, and bitterness calculations
  • Mash rest and sparge calculations
  • Brew-house efficiency and yeast attenuation tracking
  • US & Metric unit support
  • Recipe export via email
Features
Read full description

Fermenticus Brew Log is a logbook, calculator, and recipe formulator for homebrewers and small craft brewers alike. • Optimized for both iPhone & iPad. • Clean design - You can quickly input your ingredients and measurements, automatically perform important calculations, and concentrate on the brewing instead of the software! • Suitable for any level of expertise - Brew Log will handle all your extract, steeped grain, partial mash, or all-grain recipes. • Ingredients database - Add your own ingredients or select from lists of common malts, extracts, adjuncts, hops, and commercially available yeasts. • Save your recipes - Recipes are stored on your device for quick access at any time. You can also export your recipes via email in a convenient table format that can be pasted into any spreadsheet or printed out for brew day reference. • Organize your recipes - Sort your recipes with logbooks for organizing and archiving. • As you add grains or hops Brew Log instantly updates estimated gravity, color, and bitterness. Great for building recipes on the go. • Mash Rest & Sparge calculations for simple to complex mashes. Calculates volumes and temperatures for your strike water, infusions, and decoctions. • Built in calculators to determine original and final gravity, alcohol (ABV), bitterness (IBU), color (SRM), efficiency, attenuation, and more. • Choose a standard beer style or make up your own. • Designed to be an efficient brewing companion for quick logging during your brew day (“Do more with fewer clicks”). • US & Metric simultaneously supported. You can combine both US and metric units in your malt bill or hop bill. Recipes can also be converted from US to Metric and vice versa. • Unique date handling, so you can add dates with information about the date. Useful for logging information during fermentation or bottling! • Once you make your own measurement Brew Log will let you know your actual brew-house efficiency (for all-grain) and actual yeast attenuation. • Save your default settings such as typical batch size and if you brew extract/all-grain/steeped. Of course, this information can always be set on a recipe by recipe basis. ••• Important Information Regarding In-App Purchases ••• Brew Log has a limitation on the number of recipes you can store on your device. All users will get 5 empty recipe slots. There is no other limitation on any functions. The free slots are the exact same as paid recipe slots. Brew Log's In-App Purchases are tied to your iTunes account and are permanent. Your purchases on one device will be shared on all your devices. You can refresh to restore your purchases at any time. Upgrades of +10, +25, and unlimited slots are available for less than a beer at the pub. If you reach your maximum recipe limit, you will have to either delete existing recipes (I recommend exporting via Email first!) or purchase an upgrade before adding a new recipe or cloning an existing recipe. Cheers and Happy Brewing!

About

BrewingCalc

A professional toolkit for homebrewers featuring a suite of calculators for IBU, ABV, calories, and Brix. It also includes precise unit converters for volume, weight, temperature, and gravity, all without ads or subscriptions.

Highlights
  • IBU calculator (Glenn Tinseth)
  • ABV estimation (precision table & formula)
  • Calorie estimation (Real Extract method)
  • Brix/Refractometer conversion
  • Volume, weight, temperature, gravity converters
  • Metric and US unit support
Features
Read full description

BrewingCalc is a professional toolkit for homebrewers — clean, fast, and built for serious brewing. Whether you're calculating bitterness, estimating ABV, or converting between metric and US units, BrewingCalc gives you all the tools you need in one place. CALCULATORS INCLUDED • IBU (Glenn Tinseth) — Calculate International Bitterness Units for up to 5 hop additions. Enter hop weight, alpha acid %, boil time, batch volume, and wort gravity. Get per-hop and total IBU. • ABV Table — Determine alcohol by volume using a precision 60-point specific gravity interpolation table. Supports both Plato and SG inputs. • ABV Formula — Temperature-corrected ABV calculation using a polynomial formula. Accounts for measurement temperature of both original and final gravity readings. • Calories — Estimate total and per-100ml calories from original gravity, final gravity, and batch volume. Uses the Real Extract (RE) method. • Brix / Refractometer — Convert refractometer readings to gravity and ABV. Two modes: enter original and final Brix, or work backwards from current gravity and corrected Brix. Includes wort correction factor support. • Unit Converters — Four precision converters: – Volume: litres, millilitres, decalitres, US/UK gallons, fl oz, pints – Weight: kilograms, grams, pounds, ounces – Temperature: Celsius, Fahrenheit, Kelvin – Gravity: Plato ↔ Specific Gravity DESIGNED FOR BREWERS All formulas follow established brewing science — Glenn Tinseth's IBU model, the Real Extract calorie method, and standard Brix correction. No ads, no subscriptions, no account required. Works great on both iPhone and iPad.

Screenshots

Fermenticus Brew Log4 screens
BrewingCalc4 screens

Verdict

The call

The clearest difference is rating: Fermenticus Brew Log at 4.2 against BrewingCalc's 3.5. Fermenticus Brew Log also leads on ratings volume (46 vs 2) and review sentiment (85% vs 73%). BrewingCalc's advantage is in-app purchases (none vs 8). On price, update cadence, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Fermenticus Brew Log sells 8 one-off in-app purchases. BrewingCalc asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Fermenticus Brew Log holds the better App Store score, 4.2 against 3.5. That said, the two scores are not equally well evidenced: Fermenticus Brew Log has 46 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 85% of Fermenticus Brew Log's written reviews are positive against 73% of BrewingCalc's.

UpkeepUpdate frequency

Fermenticus Brew Log ships an update every 6 weeks, BrewingCalc every 3 months. The most recent releases landed on October 7, 2026 and September 24, 2026 respectively.

Scorecard6 real differences · 4 level
Fermenticus Brew Log versus BrewingCalc: the parameters behind the verdict, then further details
ParameterFermenticus Brew LogBrewingCalc
PriceFreeFree
Rating4.2 (46 ratings) — better3.5 (2 ratings)
Positive reviews84.9% of reviews — better72.7% of reviews
Number of ratings46 — better2
Update frequencyEvery 6 weeks — betterEvery 3 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS11.0 — better26.0
Further details — not scored
Size4 MB12 MB
Age rating17+17+
DeveloperMark HamblyIlia Khokhlov

Customer experience

Fermenticus Brew Log

All ratings46 ratings
Positive80.4%
Neutral6.5%
Negative13.0%
Written reviews73 reviews
Positive84.9%
Neutral6.8%
Negative8.2%

BrewingCalc

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews11 reviews
Positive72.7%
Neutral9.1%
Negative18.2%

Bugs and requests

Fermenticus Brew Log

Reported bugs

15 issues
  • App crashes on open after paying to add recipes
  • Paid for additional slots and lost all recipes when changing from Android to iOS
  • Most recent version/update is over 2 years ago
  • App not functioning correctly, not estimating IBU
  • Cannot remove added items (grain, hops, mash rest)
Show 10 more
  • Mash water and temp calculations get messed up with second sparge/mash out
  • Cannot paste photos in notes
  • Export feature only goes to email
  • Dry hop calculator does not work
  • Water volume calculations appear off
  • Font on export email is tiny
  • App crashes when trying to enter a new fermentation or brew date (since iOS8)
  • Cannot expand current limit of 5 recipes (no in-app purchases)
  • App crashes when trying to share grain bills
  • After an update nothing seemed to work

Requested features

26 requests
  • Export to iPhone outlook app
  • Highlight selected recipe for easier navigation
  • Update ingredient list (hops, yeasts, malts)
  • Ability to select Coopers products as LME addition
  • UI font scaling
Show 21 more
  • Add common yeast strains for mead making
  • Sync between devices
  • Desktop site
  • Import recipes from home brew sites
  • Add timer
  • Add brewing salt addition calculator
  • Add common yeast strains for mead making
  • Export to BeerXML
  • iCloud syncing for other iOS devices
  • Calendar (or iCal integration)
  • Field to plug in gravity readings
  • Ability to delete entered items
  • Water dilution feature
  • Partigyle or second runnings brews
  • Export to Untappd
  • Print function
  • More brew sessions available
  • Upload step by step pics of brew
  • Timer and alert function
  • Dark mode option
  • Advanced analytics dashboard

BrewingCalc

Not enough reviews yet to summarise bugs or requests.

In-app purchases

8 purchases

Fermenticus Brew Log

One-time8
  • 10 Recipe Slots$2.99
  • 10 Additional Recipe Slots$2.99
  • 10 More Recipe Slots$2.99
Show 5 more
  • 25 Recipe Slots$5.99
  • 25 Additional Recipe Slots$5.99
  • 25 More Recipe Slots$5.99
  • Unlimited Recipe Slots$11.99
  • To Infinity... And Beyond!$11.99
None

BrewingCalc

No in-app purchases

Questions

Is Fermenticus Brew Log free?
Fermenticus Brew Log is free to download, with in-app purchases available.
Is BrewingCalc free?
BrewingCalc is free to download, with no in-app purchases.
Which has better reviews, Fermenticus Brew Log or BrewingCalc?
Fermenticus Brew Log is rated higher. Fermenticus Brew Log averages 4.2 out of 5 from 46 ratings, while BrewingCalc averages 3.5 from 2 ratings.
Do Fermenticus Brew Log or BrewingCalc have ads?
Neither Fermenticus Brew Log nor BrewingCalc shows ads.
Which is updated more often, Fermenticus Brew Log or BrewingCalc?
Fermenticus Brew Log ships an update every 6 weeks, and BrewingCalc every 3 months. Most recently, Fermenticus Brew Log was updated on October 7, 2026 and BrewingCalc on September 24, 2026.

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