Press: Hard Cider Calculator
iOS app by Roman Kopaliani. Food & Drink · Roman Kopaliani
- Store rating
- 0 / 5
- Store rating count
- 0
- Download price
- Free to download
- In-app purchases
- Unknown
- Version
- 1.3
- Listing last refreshed
- 2026-09-12
View the original store listing
Store description excerpt
Press is a hard cider chemistry calculator and batch tracker for home and small-batch cidermakers. Every dose math, every target band, every safety threshold cites a named source — Cornell, UVM, peer-reviewed papers, FDA Juice HACCP, Long Ashton Research Station, Vigo Presses. WHAT PRESS DOES • Recipe builder — Pick a target style (Common Cider, English, French Cidre, New England, Spanish Sidra) with BJCP 2025 vital statistics: OG, FG, ABV, total acidity. Live ABV preview from your starting and target final gravity. • Apple-blend targeting — Long Ashton 4-tier classification (sweet, sharp, bittersweet, bittersharp) with per-cultivar Brix bands. Kingston Black, Dabinett, Yarlington Mill, Foxwhelp, Roxbury Russet, Golden Russet, and more. • Malic acid TA dosing — Adjust titratable acidity to your style target. Malic acid grams to raise, CaCO₃ grams to reduce. • Yeast strain library — Lalvin EC-1118, 71B-1122, Fermentis S-04, Lalvin BM4x4. Temperature ranges, ABV tolerance, YAN requirement, H₂S risk profile cited to manufacturer TDS sheets. • YAN supplementation — DAP and Fermaid-O dosing math from juice YAN to per-strain target. Methionine pre-fermentation guidance for high H₂S-risk strains (Boudreau et al. 2017, Journal of the Institute of Brewing). • SO₂ U-curve — Free SO₂ to molecular SO₂ at your pH (Henderson–Hasselbalch). K₂S₂O₅ weight from target ppm. Source: cider.org.uk. • Keeving math — Calcium chloride dose (400 ppm max per Vigo Presses) and pectin methylesterase volume for French cidre. CaCl₂ immediately after press, PME the next day. Never together. • Patulin food safety — FDA action level (50 ppb) for apple juice. Windfall mold guidance per Cornell *Mechanized Harvesting for Cider Apples and Patulin Food Safety* (2025). • Hardware presets — Norwall, Speidel, Vigo Presses, Pleasant Hill Grain, Apera, Hanna. Typical price ranges + setup notes. • Multi-batch tracker — SwiftData per-batch readings timeline (SG, Brix, pH, TA, free SO₂, temperature) across the 3–9 month ferment. NAMED-SOURCE DISCIPLINE Press is a calculator + reference + log, not an AI advisor. Every numeric guideline traces to one of these sources: • Cornell — Dr. Greg Peck (HortTechnology, HortScience, G3, Frontiers in Plant Science) • UVM — Dr. Terence Bradshaw, UVM Fruit Program / UVM Horticulture Research & Education Center (Acta Horticulturae 2018, 2022, 2024) • Boudreau et al. 2017 (JIB) — methionine + H₂S • Song et al. 2020 (Frontiers in Microbiology) — YAN ↔ H₂S • Karl et al. 2020 (HortScience x2) — YAN raise • Cornell patulin webinar (2025-01-08) — Juice HACCP • FDA 21 CFR Part 120 — patulin 50 ppb action level • Long Ashton Research Station (Barker 1903) — apple classification • Vigo Presses (UK) — keeving CaCl₂ spec • cider.org.uk — SO₂ molecular equilibrium • BJCP 2025 Cider Style Guidelines PRICING Press is free to download with a one-time $9.99 unlock for the full chemistry surface. No subscription. No ads. No account. NOT A BEVERAGE APP Pres
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