Comparison

Catenary Cables 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

Catenary Cables

This app provides a more accurate and efficient method for calculating the sagging of overhead transmission line conductors. It replaces traditional approximate parabolic equations with precise catenary expressions, saving time and improving accuracy.

Highlights
  • Accurate sag calculations
  • Precise catenary expressions
  • Replaces traditional methods
  • Flexible transit setup
  • Time-saving efficiency
Features
Read full description

Catenary Cables revolutionizes the sagging process for overhead transmission line conductors, making it more accurate, precise, and efficient. Traditional methods in the IEEE Guide to the Installation of Overhead Transmission Line Conductors rely on approximate parabolic equations, leading to time-consuming calculations and guaranteed inaccuracies. Catenary Cables, however, leverages the more precise catenary expressions to deliver accurate results right from the start. Experience the benefits of flexible transit setup locations and unmatched sag accuracy while saving countless hours! All Access Membership: • Catenary Cables requires an active subscription to use. • Subscriptions are billed monthly, semi-annually, or yearly depending on the plan selected. By using Catenary Cables, you agree to our Privacy Policy and Terms of Use: • https://www.catenarycables.com/privacypolicy • https://www.catenarycables.com/terms-of-service

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

Catenary Cables4 screens
SI Converter4 screens

Verdict

The call

The clearest difference is in-app purchases: SI Converter at none against Catenary Cables's 2. Catenary Cables's advantage is ads (none vs shown). On price, 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

Both are free to download. Catenary Cables sells 2 in-app purchases, starting at $59.99 per month. SI Converter asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 8, 2026 and May 16, 2026 respectively.

Scorecard2 real differences · 7 level
Catenary Cables versus SI Converter: the parameters behind the verdict, then further details
ParameterCatenary CablesSI Converter
PriceFreeFree
Rating5.0 (6 ratings) — better—
Number of ratings6 — better—
Update frequencyEvery 2 monthsEvery 2 months
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationSubscription—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better17.2
Further details — not scored
Size31 MB4 MB
Age rating4+4+
DeveloperLogan CopenhaverRamon A. Marchante Castellanos

In-app purchases

2 purchases

Catenary Cables

Subscriptions2
  • Monthly3 Days trial$59.991 Month
  • Yearly$539.991 Year
None

SI Converter

No in-app purchases

Questions

Is Catenary Cables free?
Catenary Cables is free to download, with in-app purchases available.
Is SI Converter free?
SI Converter is free to download, with no in-app purchases.
Do Catenary Cables or SI Converter have ads?
SI Converter shows ads; Catenary Cables does not.
Which is updated more often, Catenary Cables or SI Converter?
Catenary Cables ships an update every 2 months, and SI Converter every 2 months. Most recently, Catenary Cables was updated on September 8, 2026 and SI Converter on May 16, 2026.

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