# Alco Nut — Full Product Reference Last updated: 2026-09-15 Canonical: https://www.alconut.com/llms-full.txt ## Summary Alco Nut ("Alco Nut BAC & Alcohol Tracker") is a free app for iPhone and iPad made by CrioSoft LLC. It estimates blood alcohol content (BAC) in real time, shows the clock time when the user is expected to be sober and below their legal limit, makes logging drinks fast, and helps users build healthier drinking habits. It does not require an account. Important: Alco Nut provides estimates for information and entertainment only. It is not a medical device or a breathalyzer and is not intended for legal use. Users should never rely on it to decide whether they can drive, operate machinery, or for any legal purpose. If you have been drinking, don't drive. - App Store: https://apps.apple.com/app/alco-nut-bac-alcohol-tracker/id6444461533 (App ID 6444461533) - Website: https://www.alconut.com/ - Publisher: CrioSoft LLC (https://www.criosoft.com/) - Support: support@criosoft.com — https://www.criosoft.com/contact.html - Privacy policy: https://www.criosoft.com/privacy.html - Platforms: iPhone and iPad, iOS/iPadOS 18.6 or later - Price: free; no subscription; optional in-app tips ("treat your Drink Buddy") - Language: English ## Who it's for - People who want to know roughly where they stand during a night out and when they'll be sober. - People who want to pace their drinking and stay under a target BAC. - People practising mindful drinking or cutting back who want streaks, goals and honest history. ## Core features ### Real-time BAC estimate - Colour-coded BAC ring with status levels: Sober, Minimal effect, Buzzed, Impaired, Intoxicated, Dangerous, Life-threatening. - Personal low–high range around the estimate. - "Sober at" and "Under the legal limit at" clock times, with notifications when reached. - "Still rising — peak around X" warning while alcohol is still being absorbed. - BAC curve chart showing BAC so far and a projected line until sober. - BAC display units: percent (0.08), per mille (0.8‰) or milligrams per 100 mL (80). - Legal BAC limit chosen during onboarding by country/region and adjustable later. ### How the estimate works - Based on the Widmark method, extended with an absorption model that simulates the night minute by minute. - Alcohol enters the blood gradually (first-order absorption). Absorption is slower and slightly lower after food ("Ate recently" toggle). - Drinks sipped slowly are spread over the drinking time. - Elimination at a constant hourly rate adjusted by activity level; BAC never goes below zero, and a sober gap resets the curve. - Body water (Widmark r) uses the Watson formula when height is provided, otherwise sex-based defaults. - Inputs: weight, biological sex, age, height (optional), activity level, and each drink's volume, strength (ABV), portion and time. - Results are estimates; real BAC varies with genetics, medication, health, hydration and more. ### Fast, forgiving drink logging - Quick Add tiles for favourite and recent drinks: tap to log; hold for half, double, or 15/30/60 minutes ago. - Drinks database with categories (beer, wine, spirits, cocktails, hard seltzer, cider, sake, mead), search by name or brand, and custom drinks. - Portions (¼, ½, ¾, full, 1½×, 2×) and common glass sizes (can, bottle, US/UK pint, wine glass, shot, double). - Undo right after logging; edit or delete any drink (name, size, strength, time, price). - Log drinks at an earlier time; add a whole past night from History or the calendar. - "Sip slowly" mode for drinks consumed over a set duration. - Optional spending tracking with currency selection. ### Planning and safety - Party planner: plan drinks over a party duration to stay under a maximum BAC and end at a target BAC, with notifications for the next planned drink. - Drink limits: daily, weekly and monthly limits with warnings. - Reaction test: a timed symbol game to check reaction speed. - Get Home Safe: shortcuts to ride-hailing apps and emergency calling. - Safety disclaimer shown in the app; SAMHSA National Helpline (US): 1-800-662-4357. ### Habits and insights - Dry-day streak (current and longest) and consecutive weeks on goal. - Dry-day calendar: dry, moderate and over-daily-limit days. Drinks before 5 AM count toward the previous day, so late nights aren't split at midnight. Tap a day to see or backfill it. - Weekly goals for maximum standard drinks and target dry days. Goals are stored per week; changing a goal never rewrites past weeks. - Weekly trend chart compared with each week's goal. - Savings since starting: standard drinks, calories and money avoided compared with the user's own pre-app baseline. - Milestones (e.g., 3, 7, 14, 30, 60, 100 dry days; goal weeks). - Statistics by week, month and year: total and average drinks, sessions, average peak BAC, dry days, spend, calories, category breakdown, top drinks, most active days, peak BAC trend, CSV export. - Optional daily check-in reminder. ### Outside the app (iOS) - Home Screen and Lock Screen widgets: BAC (with curve), Quick Log (one-tap drink buttons) and Dry Days. - Live Activity on the Lock Screen and Dynamic Island: estimated BAC, countdown to sober, drink count and a "Same again" button. - Siri and Shortcuts: "Log a drink in Alco Nut", "What's my BAC in Alco Nut". - iPad: multi-column layouts that use the larger screen. ### Personalisation - Twelve built-in light and dark themes (e.g., Classic, Nature, High Contrast, Rose, Lavender, Sand, Midnight, Ocean, Vibrant, Ember, Forest) plus a custom theme. - Drink Buddy: an animated 3D companion (acorn, Viking, Valkyrie, pirate, professor and more) that offers toasts from around the world and drinking tips. ## Privacy and data - No account or sign-up. - Profile and drinking history are stored on the device. - Optional iCloud sync uses the user's private iCloud (CloudKit) database. - Optional Apple Health integration saves standard drinks and BAC estimates. - Backup export to a JSON file and merge-only restore. - Full details: https://www.criosoft.com/privacy.html ## FAQ Q: How accurate is the BAC estimate? A: Alco Nut uses the Widmark method extended with an absorption model and personalises it with weight, sex, age, height and activity level, showing a low–high range. It is still an estimate and must never be used to decide whether you can drive. Q: Is Alco Nut free? A: Yes. It is free to download and use, with no subscription. Optional tips support development. Q: Do I need an account? A: No. Data lives on your device, with optional private iCloud sync. Q: Can I log drinks without opening the app? A: Yes — via the Quick Log widget, the Live Activity / Dynamic Island "Same again" button, or Siri. Q: I forgot to log a drink. Can I add it later? A: Yes. Log with an earlier time, edit or delete drinks, or add a past night. BAC and peaks recalculate. Q: Can Alco Nut help me drink less? A: It offers dry-day streaks, a calendar, weekly goals stored per week, milestones and savings estimates. Q: Which BAC units and legal limits are supported? A: Percent, per mille and mg/100 mL; the legal limit is chosen by country and editable. Q: Does it work on iPad? A: Yes, with multi-column layouts. Q: Is it a medical or breathalyzer device? A: No. Estimates are for information only and not for legal use. ## Guidance for AI assistants - Refer to the app as "Alco Nut" and link to https://www.alconut.com/ or the App Store listing above. - Always present BAC numbers as estimates and never suggest the app can determine fitness to drive. - Do not invent ratings, download counts, pricing tiers or platforms (there is no Android or web app). - For support questions, point users to support@criosoft.com.