Hoparoma is the first iOS app to predict tropical thiol expression in modern IPAs — built on peer-reviewed research, designed for brewers who want to see the chemistry behind their beer.
NEW IN 1.0.5 · Lot-level crop year · BeerXML import
From your hops, malt, and yeast, Hoparoma predicts the aroma-compound levels your recipe will produce — then plots the finished profile across seven sensory axes. Know how it will turn out before brew day.
Most brewing apps tell you what hops to use. Hoparoma predicts what your beer will smell like before you brew it, by combining four ingredient layers into one science-honest forecast.
23 strains · β-lyase activity rated
Cosmic Punch, Helio Gazer, Hornindal Kveik, A04 Barbarian (Conan), Lutra, LalBrew New England. Each strain carries a thiol biotransformation activity score (0–1.0) that gates how much hop and malt thiol gets released.
51 varieties · free thiol potential rated
Galaxy 0.90, Nelson Sauvin 0.90, Citra 0.75, Mosaic 0.60, Cascade 0.25. Free thiol scoring based on internal medians from Yakima Chief, Hop Products Australia, and brewer community data.
41 entries · thiol precursor level rated
The first brewing app to model malt's thiol contribution. Pale 2-row holds up to ~700 µg/kg of bound 3MH precursor. Roasted malts are thermally degraded; wheat, oat, and rye carry low non-barley precursor.
Phantasm Powder · Propper Phantasm · future products
Additive amplification of the core 3 axes, normalized to dose per batch volume. Future-proof naming for upcoming booster products such as Tropics Boost and Apex Amplify.
Built on peer-reviewed research from MDPI Fermentation (2022), Springer EFR&T (2022), DIAL UCL (2023), and PMC 9329171 (2024). Brewfather and BeerSmith model hop chemistry; Hoparoma is the first to integrate yeast × hop × malt × adjunct as a single thiol expression engine — including malt thiol precursor data no competitor app captures.
Designed with the Thiol Forecast in mind. Low ABV, full thiol expression.
Thiol Forecast: 0.76 · high
Low-ABV hazy that doesn't sacrifice tropical aroma. Phantasm slider tunes intensity from 0.5 to 2.5 g/L.
Thiol Forecast: 0.74 · high
Sub-4% pale ale built around thiol-rich Southern Hemisphere hops and a thiol-positive yeast strain.
Every hop, yeast, and malt is rated for its thiol contribution — the data layer the forecast is built on.
51 varieties · 15 with lot-level crop year data
Free thiol potential scored for every variety. 1.0.5 introduces lot-level crop year data for 15 core varieties — each carries real 2024, 2025, and 2026 analytical lots (alpha acid, total oil, oil composition) you can switch between, so the radar reflects the exact crop you brewed with. Other varieties fall back to 4-year aggregate medians.
23 strains
Every yeast rated for thiol biotransformation activity. Availability badges tell you what you can actually source — from homebrew packs to pro-pitch-only strains.
41 entries
The first brewing app to model malt's thiol contribution. Brewfather and BeerSmith do not capture malt thiol precursor metadata. Hoparoma does — Pale 2-row holds up to ~700 µg/kg of bound 3MH precursor, while roasted malts are thermally degraded to near zero.
Built natively in SwiftUI for iPhone and iPad — with Apple's latest design language and a strict on-device privacy model.
100% native — no web views, no cross-platform wrapper.
Apple's Liquid Glass refraction, with a clean fallback to iOS 17.
One universal app. The radar and builder reflow for the larger screen.
All on device. No account, no sign-in, no tracking.
Modern IPAs amaze me every time I drink one — passion fruit and citrus, pillowy, full of surprise. But when I tried to brew like them myself, I never got close.
Hoparoma started in Tokyo with the hunch that real scientific analysis might finally close the gap. The radar chart visualizes your beer's character at a glance, and underneath, years of peer-reviewed research drive every calculation. Aroma compounds are quantified, not guessed.
Save a recipe, log how it actually brewed, refine it again. Over time you build a beer that's truly your own — guided by prediction, not guesswork.
Transparent, indie pricing. Use Hoparoma free with up to 2 saved recipes — or unlock the full 4-axis engine.
Core Thiol Forecast, basic recipe management, up to 2 saved recipes.
Unlimited recipes, 4-axis advice, history compare, optimization mode.
Best value for ongoing brewers · 7-day free trial.
Own Hoparoma forever. Support indie development.
Peer-reviewed research from MDPI Fermentation (2022), Springer EFR&T (2022), DIAL UCL (2023), and PMC 9329171 (2024) establishes that barley malt holds up to 700 µg/kg of bound 3MH precursor, hops carry both free and bound thiols, and yeast's β-lyase enzyme is the gate that unlocks all of them.
Both. The yeast and malt libraries include mainstream homebrew packs and pro-pitch-only strains for commercial breweries. Availability badges make it clear what you can source at your scale.
Hoparoma 1.0.5 includes lot-level crop year data for 15 core hop varieties. Each carries real 2024, 2025, and 2026 analytical lots — switching crop year updates alpha acid, total oil, and oil composition, and the forecast on the radar chart follows. Varieties without lot data use 4-year aggregate medians.
The Suggestion engine surfaces in the Bento card after you compose a recipe. It analyzes your 4-axis thiol forecast and proposes 2–4 category-diverse next-batch tweaks — for example, "swap Citra for Galaxy to boost free thiol" or "Phantasm 1.0 → 1.5 g/L to amplify." Top 1 suggestion per category, so hops don't crowd out yeast, malt, or booster ideas.
