Comparison

Roasters Pal vs Metric Conversions Premium

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Roasters Pal

Features
Read full description

Roasters Pal is a roasting log for home and small-batch coffee roasters. Record every roast, see your rate of rise live, keep your green beans in order and learn from each batch. Version 3.0 is a complete redesign. ROAST WITH CONFIDENCE • Pre-roasting checks: roaster, units, log interval, logging mode and Bluetooth status on one page. Tap any line to change it and come straight back. • Log temperatures automatically from a Roasters Pal Bluetooth thermometer or a supported Bluetooth probe, or enter them by hand. • Live graph of bean temperature (BT), environment temperature (ET) and rate of rise (RoR), with auto zoom. • Mark charge, dry end, first crack, second crack and drop with one tap. Drying, Maillard and development phases are worked out for you. • Alarm sounds keep you on time while your hands are busy. KEEP EVERY ROAST • Each roast keeps its full curve, weights, weight loss, roast level, rating, notes and the beans used. • Taste notes from the coffee flavour wheel, best drink and brewing recommendations. • Select several roasts at once to upload, export as one zip file or delete. Import a zip back at any time. • Back up and restore all your data. GREEN-BEAN INVENTORY • Track green-bean lots with origin, process, supplier, moisture, density and stock. • Stock goes down as you roast, and each lot keeps its history. PRINT AND SHARE • A full roast report as a PDF, ready to print or send. • Export a roast and share it with another Roasters Pal user. ROASTERS PAL CLOUD • Create a free Roasters Pal Cloud account right in the app. • Roasts upload automatically after each roast, or when you are back online. • See your roasts on a big screen in the web app, compare two roasts on one chart, and share roasts with other roasters. • Download or archive many roasts at once. AI ROAST ANALYSIS (PREMIUM) Ask for an evaluation of a profile, how to improve the next roast, what to expect in the cup, brewing suggestions or a check for roast defects. Premium includes 25 AI requests every month, and you can add packs of 25 more. Answers are saved with the roast and open again for free, and a request keeps running if you leave the page. MAKE IT YOURS • Six styles: Classic, Wood, Steel, Glass, Forest and Sky, each in light and dark mode. • °C or °F; g, kg, lb or oz. • Extra space under the tabs for bigger fingers or phones with navigation buttons. • On tablets: roasts and green beans in two columns, and a Size setting to make everything larger. PREMIUM Premium removes ads, unlocks all styles and AI analysis, and lets your Roasters Pal Cloud account keep up to 500 roasts (50 on Free). It is a monthly or yearly subscription, renewing automatically until you cancel it at least 24 hours before the end of the period in your App Store account settings. Premium is linked to your Roasters Pal Cloud account, so it works on each phone you sign in on. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://roasterspal.com/PrivacyPolicy_RPal.html

About

Metric Conversions Premium

This utility app offers a comprehensive suite of unit and currency conversions with a clean interface. It works offline and provides precise results, breaking down complex units into smaller components for detailed analysis. Users can save frequent conversions for quick access.

Highlights
  • No ads or data tracking
  • Offline functionality
  • Over 30,000 unit conversions
  • 130+ currencies with hourly updates
  • Save favorite conversions
  • Precise results up to 5 decimal places
  • Detailed unit breakdowns
Features
Read full description

Premium version of the unit converter app from the most popular metric conversions website in the world, metric-conversions.org. Over a billion visitors have used our website, try our app and see why we're so popular! FEATURES: No advertisements, tracking or any of your user data used Easy to use clear interface Works offline All popular unit conversions (over 30,000 of them) Over 130 currencies (including Bitcoin) with exchange rates updated every hour Store your favorite conversions for quick access Answers in fractions where needed. Obtain conversion results with up to 5 decimal places Imperial units split into other imperial units – so you can get a weight in stones and pounds, pounds and ounces, etc. Lengths break down into feet and inches, etc. WEIGHT: Kilograms, Pounds, Stones, Ounces, Grams, Carats, Grains, Hundredweights, Microgram, Milligrams, Ounces, Pennyweights, Tons, Troy pounds, Troy ounces TEMPERATURE: Celsius, Fahrenheit, Kelvin, Rankine, Newton, Réaumur, Rømer, Delisle. LENGTH: Miles, Yards, Feet, Inches, Kilometers, Meters, Centimeters, Chains, Decimeters, Furlongs, Leagues, Lightyears, Microinches, Microns, Millimeters, Parsecs, Nautical Leagues, Nautical Miles. AREA: Square Miles, Acres, Square Yards, Square Feet, Square Inches, Square Kilometers, Hectares, Square Meters, Square Centimeters, Square Millimeters, Square Microns, Square Microinches. VOLUME: Cups, Tablespoons, Teaspoons, Gallons, Pints, Gills, Ounces , Cubic Meters, Liters, Centiliters, Milliliters, Cubic Yards, Barrels, Quarts, Gills. SPEED: Miles per hour, Kilometers per hour, Meters per second, Knots, Mach, Light speed and more. TIME: Seconds, Minutes, Hours, Days. ANGLE: Degrees, Radians, Minutes (Angular), Seconds (Angular), Centrad, Gradians, Milliradians, Sign PRESSURE: Atmospheres, Bar, Pascals, Pound Force per Square Inch, Inches of Mercury, Inches of Water, Kilogram Force per Square Meter, Millibar, Millimeters of Mercury, Millimeters of Water, Newtons per Meter Squared, Pounds per Square Foot, Torrs CURRENCY: All state sponsored world currencies as well as Bitcoin. If you need anything added, email us at appcontact@metric-conversions.org and we'll do our best to put them in for you!

Screenshots

Roasters Pal4 screens
Metric Conversions Premium4 screens

Verdict

The call

The clearest difference is price: Roasters Pal at Free against Metric Conversions Premium's $4.99. Metric Conversions Premium's advantage is in-app purchases (none vs 2) and ads (none vs shown). On update cadence, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Roasters Pal is free to download; Metric Conversions Premium costs $4.99 up front. Roasters Pal sells 2 in-app purchases, starting at $0.99 per month. Metric Conversions Premium asks for nothing beyond the download.

UpkeepUpdate frequency

Roasters Pal ships an update monthly, Metric Conversions Premium every 2 months. The most recent releases landed on November 7, 2026 and November 4, 2026 respectively.

Scorecard3 real differences · 7 level
Roasters Pal versus Metric Conversions Premium: the parameters behind the verdict, then further details
ParameterRoasters PalMetric Conversions Premium
PriceFree — better$4.99
Rating—3.0 (2 ratings) — better
Positive reviews—66.7% of reviews
Number of ratings—2 — better
Update frequencyMonthly — betterEvery 2 months
AdsYesNo — better
In-app purchasesYesNo — better
Monetization—Paid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.1 — better
Further details — not scored
Size47 MB26 MB
Age rating4+4+
DeveloperAstijus SkiriusWight Hat

In-app purchases

2 purchases

Roasters Pal

Subscriptions2
  • Premium access$0.991 Month
  • Premium access$9.991 Year
None

Metric Conversions Premium

No in-app purchases

Questions

Is Roasters Pal free?
Roasters Pal is free to download, with in-app purchases available.
Is Metric Conversions Premium free?
Metric Conversions Premium costs $4.99, with no in-app purchases.
Do Roasters Pal or Metric Conversions Premium have ads?
Roasters Pal shows ads; Metric Conversions Premium does not.
Which is updated more often, Roasters Pal or Metric Conversions Premium?
Roasters Pal ships an update monthly, and Metric Conversions Premium every 2 months. Most recently, Roasters Pal was updated on November 7, 2026 and Metric Conversions Premium on November 4, 2026.

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