SI Converter vs CardScore
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SI Converter
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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)
CardScore
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
| Parameter | SI Converter | CardScore |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.2 — better | 26.5 |
| Further details — not scored | ||
| Size | 4 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Ramon A. Marchante Castellanos | Tim Reynaert |
In-app purchases
SI Converter
No in-app purchases
CardScore
No in-app purchases









