Roast Master vs OLLA Brew Lab
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Roast Master
Read full descriptionHide full description
Roast Master puts your roasting data and an AI coach in one app. Log every roast, see it clearly, and get AI coaching on exactly what to change next โ batch after batch. AI ROASTING COACH Roast, log your curve, and AI analyzes it โ your temperature curve, your events, your cupping โ then gives you a focused, practical tip for your next batch. It's like having an experienced roaster review the roast with you and tell you exactly what to try next. SEE YOUR ROASTING DATA Every roast, captured and visualized: โข Full temperature curves โ Bean Temp, Environmental Temp, and Rate of Rise โข Key events โ charge, first crack, drop โ with development time (DTR) โข SCA-style cupping scores: aroma, flavor, acidity, body, balance, sweetness, and more โข Agtron roast color readings YOUR ROASTING DASHBOARD โข Roast DNA: flavor radar, Agtron distribution, and DTR gauges โข Cupping trends over time and batch comparisons โข Activity heatmap to see your roasting rhythm at a glance FOR ROASTERS WHO WANT TO IMPROVE Every batch becomes data you can review and compare โ with AI helping you turn it into your next, better roast. FREE & PREMIUM โข Free: roast logging, curves, cupping, dashboard, and PDF export โข Premium: a generous allowance of AI Coaching sessions Export any roast to PDF, free. No ads. Start roasting smarter today. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://roast-master.app/privacy
OLLA Brew Lab
Read full descriptionHide full description
OLLA Brew Lab is a coffee workbench for iPhone and iPad that keeps roast curves, brew logs and cupping records in one place. It is made for home roasters, specialty coffee enthusiasts and small roasters. Bean cards, brew logs and cuppings are free. In Roast to Cup, the roastery workbench for curves, roast profiles and inventory, the design workbench opens free; adding and delivering are OLLA Pro. ROAST CURVES (OLLA PRO) Log a roast live with large buttons for charge, yellowing, first crack and drop; development ratio and weight loss follow from what you record. Replay any curve, compare batches, and set a batch as your baseline. Import curve files in 11 formats; the source is detected from the file itself. ROAST PROFILES: DESIGN BEFORE YOU CHARGE Free: dial targets for first crack, drop and development ratio, and read the projected first-crack window, drop temperature and development ratio, with no machine connection. With OLLA Pro, save a design to the curve library, start a roast from it, or export it as .alog, JSON or CSV. YOUR BEAN LIBRARY One card per bag: origin, variety, process, estate, altitude, roast level, roast date, purchase details and your own notes. Resting and drinking windows count down on their own; a Home Screen widget shows a pinned bean. Photograph a label, a bean list or a cafe menu and OLLA reads it on device, showing the words each field came from; nothing is saved until you confirm. On supported devices, Apple Intelligence fills gaps, corrects misreadings and adds explanations and translation in three languages, all on device. The Coffee Codex holds 1,700+ cross-linked entries, from origins and varieties to processing and brewing. BREW LOG Record dose, grind, water temperature, ratio, TDS, extraction yield, timing and sensory impressions. The Tools tab sits alongside, with a step-recipe brew timer, an extraction-yield calculator and brewing-water recipes. CUPPING Score on a classic ten-attribute sheet, or use sensory scoring: cup profile, quality impression and five-cup consistency. Describe flavor with 16 everyday words or the full flavor wheel, and export a cupping sheet as a PDF. OLLA Pro adds multi-sample blind assessment, with cup-by-cup records and a five-class verdict from L5 to L1. FIELD GUIDE City coffee guides, one volume per city, readable offline. Tokyo, Osaka, Kyoto and Fukuoka are published; the other cities on the city bar are marked Planned. Each list is selected from public data by OLLA's own scoring. COFFEE JOURNAL Beans, brews, cuppings and roasts stay linked, gathered in one archive with search, filters and yearly stats. HOW PEOPLE USE OLLA ยท A home roaster designs the next batch, logs it, and cups it a few days later on the same bean card. ยท A specialty coffee drinker scans a new bag, watches its resting window and dials in a pour over. ยท A small roaster keeps green and roasted stock, lot codes and labels in one ledger with OLLA Pro. PRIVATE BY DESIGN No sign-up is required. No tracking, no ads, no third-party analytics. Your records stay on your device, and in your own iCloud if you turn on sync. Camera access is requested only when you scan and photo access only when you pick a photo; recognition runs on device. OLLA works in English, Simplified Chinese and Japanese. OLLA PRO OLLA Pro includes adding and delivering in Roast to Cup, iCloud sync across devices, PDF reports with your shop name, advanced widgets, and selected LAB chapters and data. Roast and inventory records from before 1.3.0 stay viewable. OLLA Pro is a monthly or annual auto-renewing subscription, or a one-time purchase; the annual plan includes a 7-day free trial. Payment is charged to your Apple Account at confirmation. A subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Manage or cancel it in your Apple Account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Roast Master at none against OLLA Brew Lab's 3. Roast Master also leads on iOS requirement (13.0 vs 16.0). On price, update cadence, ads and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. OLLA Brew Lab sells 3 in-app purchases, starting at $1.99 per month. Roast Master asks for nothing beyond the download.
Roast Master ships an update every 2 weeks, OLLA Brew Lab weekly. Both last shipped on November 5, 2026.
| Parameter | Roast Master | OLLA Brew Lab |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks | Weekly โ better |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 13.0 โ better | 16.0 |
| Further details โ not scored | ||
| Size | 66 MB | 169 MB |
| Age rating | 4+ | 4+ |
| Developer | Seokmin Bang | HU JIANHUA |
In-app purchases
Roast Master
No in-app purchases
OLLA Brew Lab
- OLLA Pro Monthly$1.991 Month
- OLLA Pro Annual7 Days trial$14.991 Year
- OLLA Pro Lifetime$29.99








