For iOS · TestFlight beta

Track every batch from start to finish.

Mashpad is a production log for fermenting, distilling, aging, and bottling. Plan recipes, estimate yield, and keep your inventory honest. All on your phone, fully offline, no account needed.

Join the TestFlight betaComing soon to the App Store

iOS 17+ · iPhone & iPad · No account required

Mashpad app icon

What it does

Built for the bench. Sized for your phone.

A structured log that follows the spirit through every stage of a run — ferment, distill, age, bottle — with the math and inventory tracking baked in.

How it works

A run sheet that follows the spirit.

Every batch moves through five stages. Mashpad gives each stage its own structured log — and stitches them together so you can trace a bottle back to its mash bill.

  1. Stage 01

    Mash

    Where grain becomes sugar. Capture your grain bill, strike water, mash rest steps, and the gravity coming off the mash. Recipes carry their mash schedule forward, so the next time you brew the same wash, it's already laid out — with the Mash Water and Grain Yield calculators a tap away.

    • Grain bill & weights
    • Strike temp & mash rest steps
    • Pre-boil gravity
    Screenshot · Mash

  2. Stage 02

    Ferment

    Pitch, watch, wait. Log starting and finishing gravity, yeast pitch, temperatures over time, nutrients and additives. ABV from Gravity, Temperature Correction, and Wash Alcohol Content calculators sit one tap away.

    • Starting & finishing gravity
    • Temperature & timing notes
    • Yeast, nutrients, additives
    Screenshot · Ferment

  3. Stage 03

    Distill

    Log each cut as it happens — foreshots, heads, hearts, tails — with volumes, ABV off the parrot, and run notes. The Cut Point Estimator and Theoretical Yield calculators use your wash profile and still preset to predict the run before you fire it.

    • Foreshots → heads → hearts → tails
    • Parrot ABV per fraction
    • Cooling & run notes
    Screenshot · Distill

  4. Stage 04

    Age

    Park hearts in a barrel, on oak, or in glass. Set a target window, log samples as they happen, and keep tasting notes on the same timeline as the spirit's origin. Barrel Entry Proof and Angel's Share calculators handle the math.

    • Vessel & oak profile
    • Sample notes over time
    • Target & racking dates
    Screenshot · Age

  5. Stage 05

    Bottle

    Blend, proof to target, count bottles. Mashpad runs the math — Blend Spirits, Bottles From Batch, Proof Gallons for TTB — and writes the final inventory entry against the same batch you started months ago.

    • Blend & proofing math
    • Bottle counts & sizes
    • Auto-rolls into inventory
    Screenshot · Bottle

Recipes tab

Plans that carry forward.

A recipe in Mashpad isn't just a grain bill — it's the full lifecycle template. Mash schedule, ferment profile, distill plan, aging targets, all in one place. Start a new batch from a recipe and the run sheet comes pre-filled; tune as you go, then save the adjustments back to a new version when you're done.

Recipes can be created from scratch or grown out of a run you already logged. Either way, the trail between recipe and batch stays intact — recipes know which runs used them, runs point back at the recipe they came from.

  • Multi-stage templates

    A recipe holds your mash, ferment, distill, and age plans — fields pre-fill when a new run starts.

  • Versions

    Tune as you go, save the run's adjustments back to a new version, and keep the history.

  • Favorites & templates

    Pin the ones you brew often. Mark workhorse recipes as templates for fast new-batch setup.

  • Last made

    Sort by what you've actually been working on — not what you typed first six months ago.

  • Linked to runs

    Every recipe knows which batches used it; every batch points back at the recipe it came from.

Estimated yield

Tuned to your wash. Tuned to your still.

Yield in Mashpad starts from conservation of pure alcohol — the ethanol you end with can't exceed the ethanol you started with — and then divides it across the cuts using values you set.

Typical splits describe what's in the boiler: how a given wash tends to distribute alcohol across foreshots, heads, hearts, and tails. Cut weights describe what your still does to that distribution — a pot still pulls heads up; a packed column tightens hearts.

Both tables are fully editable, per fermentable and per still. As you run more batches and learn how your equipment actually behaves, tune the tables — and the estimates track closer to what you'll really pull off the run.

Wash profiles

Defaults from the app's Cut Point Estimator. Share of total ethanol you'd expect in each cut, before the still's character is applied.

WashForeshotsHeadsHeartsTails
Grain Mash1%8%70%21%
Sugar Wash0.8%9%63%27.2%
Fruit Wash2%15%55%28%
Spirit Run0.5%6%79%14.5%

Still presets

A few of the 13 shipped presets. Multipliers applied to the wash profile — a pot pulls heads up, a column tightens hearts.

StillForeshotsHeadsHeartsTails
Alembic Pot Still1.20×1.10×0.95×0.90×
Hybrid Pot w/ Dephlegmator0.90×0.90×1.10×0.90×
Packed Reflux Column0.60×0.70×1.15×0.75×
10+ Plate Neutral Column0.50×0.60×1.25×0.75×

Tools tab

Nineteen calculators. Always one tap away.

Mashpad ships with a full Tools tab — and every stage screen surfaces the calculators relevant to where you are, so you don't have to go hunting mid-run. Organized into six categories, searchable, and favorite-able.

  • Mash

    2

    Water volumes and grain calculations.

    • Mash Water
    • Grain Yield

  • Fermentation

    5

    Gravity, sugar, and wash calculations.

    • Sugar Wash
    • Sugar Addition
    • ABV from Gravity
    • Temperature Correction
    • Wash Alcohol Content

  • Distillation

    6

    Yield estimates, dilutions, and cuts.

    • Theoretical Yield
    • Stripping Run Output
    • Spirit Run Dilution
    • Cut Point Estimator
    • Reflux Ratio
    • Heating Time

  • Aging

    2

    Barrel entry and aging loss.

    • Barrel Entry Proof
    • Angel's Share

  • Bottling

    2

    Bottle counts, proof, and labeling.

    • Bottles From Batch
    • Proof Gallons (TTB)

  • Utility

    2

    General-purpose tools.

    • Unit Conversion
    • Blend Spirits

Inventory tab

Every spirit, every stage, traceable.

Inventory in Mashpad isn't just a bottle count. It's a live picture of everything you own across every stage — and each item points back at the batch it came from. Volume in, volume promised to the next run, volume still on hand, all reconciled.

  • Distillate

    Released straight from a still — cuts you're holding before they go anywhere else.

  • Fermented

    Released from a ferment — wash, beer, wine, mead, anything you haven't (or won't) distill.

  • Aged

    Released from an aging vessel — what's on oak, in glass, or under any other resting program.

  • Bottled

    Released from a bottling run — the finished count, on the shelf, ready to drink or sell.

Stock items hold proof, volume, allocated volume, and the origin log that produced them — so you can always answer "how much do I have, where did it come from, and what's already spoken for."

Your data

Yours. Local. Backed up.

Mashpad runs on your device — fully offline, no account required, no servers in the loop. Your batches, your recipes, your inventory: they stay where you put them.

  • No account, no cloud sync

    Mashpad never asks you to sign up. There's no server, no telemetry, no analytics watching what you brew.

  • Daily local backups

    Mashpad writes a backup file to your device every day. Find them in the Files app, drag them to iCloud Drive, AirDrop them — they're yours.

  • Portable export format

    Backups are plain JSON, decoupled from the app's database schema. Old backups stay readable even as the app evolves.

FAQ

Questions, expected.

If you don't see what you're looking for, the support page has an email address that goes straight to the developer.

  • Who is this app for?
    Licensed craft distillers who want a structured production log, hobbyist distillers in jurisdictions where home distillation is legal, and educational or research use. If you keep notebooks at the bench, Mashpad is for you.
  • Is home distillation legal?
    It depends on where you live. In the United States, distilling spirits at home without a federal permit is illegal regardless of state law. In several other countries, hobbyist distillation is legal — sometimes with volume or licensing limits. Mashpad is intended for licensed distillers, hobbyists in jurisdictions where it's legal, and educational use. You are responsible for knowing and following the laws that apply to you.
  • What does "estimated yield" actually do, and how accurate is it?
    It estimates how much spirit you'll pull off a wash, based on the conservation of pure alcohol and the cut distribution you've defined. Accuracy is a function of your inputs — Mashpad ships with reasonable defaults for typical splits and per-still cut weights, but they're meant to be edited. Tune them to match what your wash and your still actually do, and the estimates track closer to reality each run.
  • Why are there two axes — typical splits and cut weights?
    Because two different things affect where the alcohol ends up. The wash itself (grain, malt, sugar, fruit) has a typical distribution across foreshots / heads / hearts / tails. Your still then skews that distribution — a pot still concentrates heads and tails, a reflux column narrows hearts. Separating these means you can tune the estimator for your own equipment without losing the per-wash characteristics.
  • How is my data stored?
    Locally on your device. There's no account, no cloud sync, no server. You can export full backup files when you want to keep an archive or move between devices.
  • Does it work offline?
    Yes. Mashpad is fully offline — it never needs a network to log a run.
  • Is there a subscription?
    Pricing is still being finalized. Beta access through TestFlight is free while we figure out the right model. Final pricing details will be posted here before launch.
  • Can I import data from other tools?
    Not yet. Mashpad supports its own backup/restore format for moving data between devices, but import from other apps isn't built. If there's a specific tool you'd like to bring data in from, tell us on the support page.
  • What if my distillation runs don't match the estimates?
    That's expected, and that's the point of the two editable axes. As you run more batches you'll get a feel for how your wash and your still actually behave — tune the typical splits and cut weights to match your history, and future estimates will track closer to reality.
  • Is Mashpad on Android?
    Not currently. Mashpad is built natively in SwiftUI for iOS.

About who this is for.

Mashpad is intended for licensed craft distillers, hobbyist distillers in jurisdictions where home distillation is legal, and educational or research use. The app does not teach distillation and is not a guide to producing spirits. Users are responsible for understanding and complying with the laws that apply to them, including federal, state, and local regulations.