# Fermenticus Brew Log — Homebrew Calculator & Logbook

> Homebrew calculator, logbook, and recipe formulator for brewers. (iPhone/iPad app by Mark Hambly.)

- Source: https://appshunter.io/ios/app/fermenticus-brew-log/id627800046 (this page in markdown: same URL + `.md`)
- Developer: [Mark Hambly](https://appshunter.io/developer/627800469)
- Category: Utilities, Food & Drink
- Price: Free with in-app purchases
- Rating: 4.20/5 from 46 App Store ratings · 73 written reviews indexed
- Age rating: 17+
- Requires: iOS 11.0 · 4 MB
- Languages: American English
- Released: 2013-04-04
- Data updated: 2026-06-09
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/fermenticus-brew-log/id627800046/reviews.md

## What is Fermenticus Brew Log?

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!

## Key features

- 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

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| 10 Recipe Slots | $2.99 | one-time |
| 25 Recipe Slots | $5.99 | one-time |
| Unlimited Recipe Slots | $11.99 | one-time |
| 10 Additional Recipe Slots | $2.99 | one-time |
| 10 More Recipe Slots | $2.99 | one-time |
| 25 Additional Recipe Slots | $5.99 | one-time |
| 25 More Recipe Slots | $5.99 | one-time |
| To Infinity... And Beyond! | $11.99 | one-time |


## Recent user reviews (10 of 73)

All indexed reviews: https://appshunter.io/ios/app/fermenticus-brew-log/id627800046/reviews.md

### 5/5 — Awesome app

*2023-05-09, version 5*

Best designed app I have seen for recipe keeping and brew tracking. Huge ingredient list. Easy to use interface. Numbers are spot on. Makes brew day a breeze.

### 5/5 — Great app

*2020-10-10, version 5*

I’ve used this app for 70+ brews. It does everything I need. The ability to export to the iPhone outlook app would be useful.

### 5/5 — Great app

*2020-05-18, version 5*

I’ve used both brewlog and BeerSmith and I will keep with brewlog because it is easier to follow and you can export and print your recipes.  In the app there is a log that is continuous and allows me to make notes.  Thanks for the updates

### 5/5 — The best recipe app out there

*2020-05-12, version 4*

This app is so user friendly.  It is also customizable to meet your recipe spec needs.  I strongly encourage using this app for all recipe designs.  The best!!

Testimonial from 2006 California Homebrewer of the Year.

### 4/5 — Great calculator

*2019-12-15, version 2.6*

I love this app but Mark Hambly would you please update it? There’s many more hops, yeasts, and specialty malts since it was last updated. Would also appreciate highlighting the selected recipe to be able to navigate easier within recipes, like another user reviewed.

### 1/5 — Terrible

*2019-12-10, version 2.6*

Very difficult to use. When you’re messing around something for 10 minutes and still can’t figure it out that’s why it’s time to go to another app. Do not download this app terrible.

### 5/5 — Great App

*2019-09-28, version 2.6*

Easy to use. 43 recipes and counting

### 5/5 — Brew

*2019-08-04, version 2.6*

Muito bom!

### 1/5 — No longer in active develooment... or support

*2019-06-14, version 2.6*

Did not notice that the app had not been updated in 3 years.  Paid to add 25 recipes, which caused the app to crash on open.

If it was actively supported, this would be a great app.

### 4/5 — Ok

*2018-12-16, version 2.6*

Reds to update hops selection lemondrop hops not on it and would be great if had the ability to select coopers products as a lme addition

## Frequently asked questions about Fermenticus Brew Log

### What does Fermenticus Brew Log do?

Fermenticus Brew Log acts as a digital logbook, calculator, and recipe formulator for homebrewers and small craft brewers. It allows users to input ingredients, automatically calculate key brewing metrics like gravity, color, and bitterness, and manage their brewing recipes efficiently.

### What are the key features of this app?

Key features include a comprehensive ingredient database, automatic calculations for gravity, color, and bitterness as you add ingredients, mash rest and sparge calculations, brew-house efficiency and yeast attenuation tracking, and support for both US and Metric units. Recipes can also be saved, organized, and exported via email.

### How much does Fermenticus Brew Log cost?

The app is free to download and use with a limitation of 5 empty recipe slots. Additional recipe slots can be purchased through in-app purchases, with options for +10, +25, or unlimited slots. These purchases are permanent and shared across devices.

### What devices is Fermenticus Brew Log compatible with?

The app is optimized for both iPhone and iPad, offering a clean design that is easy to navigate on either device. Purchases are tied to your iTunes account and can be restored on any of your devices.

### How can I use this app for my brewing projects?

This app is ideal for planning and tracking your brewing sessions. You can use it to formulate new recipes by inputting ingredients and seeing instant calculations, log your brew day activities, and organize your past recipes for future reference. It supports various brewing methods, from extract to all-grain.

## Version history (last 5 releases)

### 5 — 2020-05-16

* Malt, hops, and yeast lists are now periodically updated online! Go to the settings screen to refresh manually.
* You can now suggest any missing malts, extracts, adjuncts, hops, or yeasts you'd like to see added to the default lists. Approved ingredients will be added without requiring an app update.
* A new "whats new" screen will show up whenever the app updates and can be found in the Settings as well.

New in version 4
* iPad will now visually maintain selection of recipe on left column
* Fixes selection state when tapping on recipe

New in version 3:
* Updated for modern devices layouts.
* New delete buttons.
* Many little layout fixes and minor adjustments

### 4 — 2020-05-11

New in version 4
* iPad will now visually maintain selection of recipe on left column
* Fixes selection state when tapping on recipe

New in verison 3:
* Updated for modern devices layouts.
* New delete buttons.
* Many little layout fixes and minor adjustments

### 3 — 2020-05-10

* Updated for modern devices layouts.
* New delete buttons.
* Many little layout fixes and minor adjustments

### 2.6 — 2016-03-09

Updated with the new BCJP 2015 style guidelines, and now featuring Mosaic hops (along with a bunch of others too!).

Fixed some minor text display issues and funky iPad landscape text entry issues on the stats and notes pages.

### 2.5 — 2014-10-28

This update includes iOS 8 support and iPhone 6/6+ compatibility.

Crashes related to iOS 8 should be resolved, you can add dates again!

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## More apps by Mark Hambly

- [APOD Astronomy Pics and Widget](https://appshunter.io/ios/app/apod-astronomy-pics-and-widget/id1532969874)

All apps by Mark Hambly: https://appshunter.io/developer/627800469

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-09.*