Comparison

SI Converter vs CardScore

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

Head to head
About

SI Converter

Features
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SI Converter is allows you to easily convert unit following the global standard of measurement is the International System of Units (SI). The intent of this app is to provide a convenient way to convert between the various units of measurement within different systems, as well as to provide a basic understanding of the systems currently in use, and how they interact. Supported Units: Area: Square Megameters (Mm²) Square Kilometers (km²) Square Meters (m²) Square Centimeter (cm²) Square Millimeters (mm²) Square Micrometers (µm²) Square Nanometers (nm²) Square Inches (in²) Square Feet (ft²) Square Yards (yd²) Square Miles (mi²) Acres (acres) Ares (a) Hectares (ha) Lengh: Megameters (Mm) Kilometers (kM) Hectometers (hm) Decameters (dam) Meters (m) Decimeters (dm) Centimeters (cm) Millimeters (mm) Micrometers (µm) Nanometers (nm) Picometers (pm) Inches (in) Feet (ft) Yards (yd) Miles (mi) Scandinavian Miles (smi) Light Years (ly) Nautical Miles (NM) Fathoms (ftm) Furlongs (fur) Astronomical Units (ua) Parsecs (pc) Pressure: Newtons Per Meter Squared (Equivalent to Pascals) (N/m²) Gigapascals (GPa) Megapascals (MPa) Kilopascals (kPa) Hectopascals (hPa) Inches of Mercury (inHg) Bars (bar) Millibars (mbar) Millimeters of Mercury (mmHg) Pounds Per Square Inch (psi) Temperature: Kelvin (K) Degree Celsius (°C) Degree Fahrenheit (°F) volume: Megaliters (ML) Kiloliters (kL) Liters (L) Deciliters (dL) Centiliters (cL) Milliliters (mL) Cubic Kilometers (km³) Cubic Meters (m³) Cubic Decimeters (dm³) Cubic Millimeters (mm³) Cubic Inches (in³) Cubic Feet (ft³) Cubic Yards (yd³) Cubic Miles (mi³) Acre Foeet (af) Bushels (bsh) Teaspoons (tsp) Tablespoons (tbsp) Fluid Ounces (fl oz) Cups (cup) Pints (pt) Quarts (qt) Gallons (gal) Imperial Teaspoons (tsp) Imperial Tablespoons (tbsp) Imperial Fluid Ounces (fl oz) Imperial Pints (pt) Imperial Quarts (qt) Imperial Gallons (gal) Metric Cups (metric cup) Mass: Kilograms (kg) Grams (g) Decigrams (dg) Centigrams (cg) Milligrams (mg) Micrograms (µg) Nanograms (ng) Picograms (pg) Ounces (oz) Pounds (lb) Stones (st) Metric Tons (t) Short Tons (ton) Carats (ct) Ounces Troy (oz t) Slugs (slug) angle: Degrees (°) Arc Minutes Arc Seconds Radians (rad) Gradians (grad) Revolutions (rev) Speed: Meters Per Second (m/s) Kilometers Per Hour (km/h) Miles Per Hour (mph) Knots (kn) time: Hours (hr) Minutes (min) Seconds (sec) Milliseconds (ms) Microseconds (μs) Nanoseconds (ns) Picoseconds (ps)

About

CardScore

Features
Read full description

CardScore is the score sheet you'll never lose again. No more receipts and blunt pencils: keep score for all your card games on a polished, dark-green card table. MADE FOR CARD PLAYERS • Presets for Manille, Whist, Hearts, Oh Hell, Rummy, President, Uno, Phase 10, Rummikub, Skip-Bo, Old Maid and more • Or create a custom game with your own rules EVERYTHING YOU NEED • Unlimited players or teams • Target score with automatic winner detection — the crown appears by itself • Warning when a round doesn't add up • Lowest-score-wins mode for penalty-point games • Edit or delete rounds afterwards • Hide the games you never play in settings PRIVACY No account, no ads, no tracking. All your scores stay on your device.

Screenshots

SI Converter4 screens
CardScore4 screens

Verdict

The call

The clearest difference is ads: CardScore at none against SI Converter's shown. CardScore also leads on update cadence (every 2 weeks vs every 2 months). SI Converter's advantage is iOS requirement (17.2 vs 26.5). On price, in-app purchases and device support 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

SI Converter ships an update every 2 months, CardScore every 2 weeks. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 3 level
SI Converter versus CardScore: the parameters behind the verdict, then further details
ParameterSI ConverterCardScore
PriceFreeFree
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsYesNo — better
In-app purchasesNoNo
DevicesiPhone, iPad — betteriPhone
Requires iOS17.2 — better26.5
Further details — not scored
Size4 MB7 MB
Age rating4+4+
DeveloperRamon A. Marchante CastellanosTim Reynaert

In-app purchases

None

SI Converter

No in-app purchases

None

CardScore

No in-app purchases

Questions

Is SI Converter free?
SI Converter is free to download, with no in-app purchases.
Is CardScore free?
CardScore is free to download, with no in-app purchases.
Do SI Converter or CardScore have ads?
SI Converter shows ads; CardScore does not.
Which is updated more often, SI Converter or CardScore?
SI Converter ships an update every 2 months, and CardScore every 2 weeks. Most recently, SI Converter was updated on November 5, 2026 and CardScore on October 31, 2026.

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