Comparison

CNVRT vs SI Converter

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

Head to head
About

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.

Highlights
  • Over 200 units supported
  • 20 measurement categories
  • Instant conversions
  • Metric and Imperial units
  • Optimized for Apple devices
  • STEM and everyday use
Features
Read 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.

About

SI Converter

Features
Read 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

CNVRT4 screens
SI Converter4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 5 level
CNVRT versus SI Converter: the parameters behind the verdict, then further details
ParameterCNVRTSI Converter
Price$4.99Free — better
Rating4.5 (19 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings19 — better—
Update frequencyEvery 2 weeks — betterEvery 2 months
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad
Requires iOS15.0 — better17.2
Further details — not scored
Size1 MB4 MB
Age rating4+4+
DeveloperPascal AndraosRamon A. Marchante Castellanos

In-app purchases

None

CNVRT

No in-app purchases

None

SI Converter

No in-app purchases

Questions

Is CNVRT free?
CNVRT costs $4.99, with no in-app purchases.
Is SI Converter free?
SI Converter is free to download, with no in-app purchases.
Do CNVRT or SI Converter have ads?
SI Converter shows ads; CNVRT does not.
Which is updated more often, CNVRT or SI Converter?
CNVRT ships an update every 2 weeks, and SI Converter every 2 months. Most recently, CNVRT was updated on September 18, 2026 and SI Converter on May 16, 2026.

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