CNVRT vs SI Converter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CNVRT
Instantly convert over 200 units across 20 measurement categories, from weight and length to temperature and data storage. This tool simplifies metric and Imperial conversions for STEM professionals and everyday users alike.
- Over 200 units supported
- 20 measurement categories
- Instant conversions
- Metric and Imperial units
- Optimized for Apple devices
- STEM and everyday use
Read full descriptionHide full description
CNVRT allows you to convert any unit of measurement easily and instantly so you never have to do it yourself or struggle with metric and Imperial units. CNVRT supports over 200 different units and 20 different measurements, each with its own unique color. These measurements include: • Weight or Mass • Length or Distance • Temperature • Speed • Area • Time or Duration • Data Storage • Angle • … and many more! CNVRT is optimized for iPhone, iPad and macOS. Whether you are in STEM or just for everyday use, CNVRT will simplify your life.
SI Converter
Read full descriptionHide full description
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)
Screenshots
Verdict
The clearest difference is price: SI Converter at Free against CNVRT's $4.99. CNVRT's advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 2 months). On in-app purchases 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
SI Converter is free to download; CNVRT costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
CNVRT ships an update every 2 weeks, SI Converter every 2 months. The most recent releases landed on September 18, 2026 and May 16, 2026 respectively.
| Parameter | CNVRT | SI Converter |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 4.5 (19 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 19 — better | — |
| Update frequency | Every 2 weeks — better | Every 2 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.2 |
| Further details — not scored | ||
| Size | 1 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Pascal Andraos | Ramon A. Marchante Castellanos |
In-app purchases
CNVRT
No in-app purchases
SI Converter
No in-app purchases









