Comparison

InterCalc vs 2nd Calc

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

Head to head
About

InterCalc

This app performs linear interpolation using a set of X-Y values to define a relationship. It can calculate values based on defined points, useful for tasks like converting pressure readings to fluid volumes in containers or performing simple unit conversions.

Highlights
  • Linear interpolation of X-Y values
  • Defines arbitrary functions from data points
  • Calculates fluid volume from pressure readings
  • Performs unit conversions (e.g., temperature, speed)
  • Supports custom data sets
Features
Read full description

This application is designed to linearly interpolate a value given a set of X-Y values that define a relationship. The X-Y values can be as simple as two points that specify a simple line, or they can be a set of points that specifies an arbitrary function. One use of this program is to calculate the amount of fluid in a container given a pressure reading at the bottom of the tank. Typically this situation results in several pressure readings and corresponding volume ( gallons, liters ) readings as the tank is being filled. Once the pressure measuring device is so calibrated, pressure readings can then be converted to gallon or liter values. Other uses include simple conversions between Fahrenheit and Celsius, or between kph and mph.

About

2nd Calc

This utility app simplifies everyday calculations with a tip calculator, temperature and unit converters, a real-time currency converter, and a multi-city time zone display. It aims to be your go-to tool for common daily tasks, keeping complex calculators for specialized needs.

Highlights
  • Tip calculator
  • Temperature conversion (F/C)
  • Unit converter (distance/weight)
  • Real-time currency converter
  • Multi-city time zone display
Features
Read full description

Welcome to your "2nd Calculator!" A quick and easy way to solve common questions and tasks. Key features include the following: - Tip Calculator for common percentages - Simple Temperature conversion to and from Fahrenheit and Celsius - A Unit Converter for common distance and weight measurements (see below) - A real-time Currency Converter using daily rates for key currencies (well, we think they're key) - On the spot or future Time Zone displays for up to 4 major cities on one screen! Keep the complicated calculators and apps on your phone for when you need them, but we think you'll find most daily tasks right here in one place. Distance Conversion options: To and From... - Centimeters (cm) - Meters (m) - Kilometers (km) - Inches (in) - Feet (ft) - Yards (yd) - Miles ...Or weights: - Grams (g) - Kilograms (kg) - Ounces (oz) - Pounds (lbs)

Screenshots

InterCalc4 screens
2nd Calc4 screens

Verdict

The call

The clearest difference is iOS requirement: 2nd Calc at 12.0 against InterCalc's 18.6. On price, rating, ratings volume and update cadence 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.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for InterCalc against 5.0 for 2nd Calc. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

UpkeepUpdate frequency

InterCalc ships an update every 11 months, 2nd Calc every 6 months. The most recent releases landed on October 17, 2026 and October 21, 2026 respectively.

Scorecard1 real difference · 9 level
InterCalc versus 2nd Calc: the parameters behind the verdict, then further details
ParameterInterCalc2nd Calc
PriceFreeFree
Rating5.0 (1 ratings)5.0 (2 ratings)
Positive reviews—100.0% of reviews
Number of ratings12 — better
Update frequencyEvery 11 monthsEvery 6 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.612.0 — better
Further details — not scored
Size1 MB41 MB
Age rating4+4+
DeveloperRiver Rock LogicScott Kier

Customer experience

InterCalc

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

2nd Calc

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

InterCalc

No in-app purchases

None

2nd Calc

No in-app purchases

Questions

Is InterCalc free?
InterCalc is free to download, with no in-app purchases.
Is 2nd Calc free?
2nd Calc is free to download, with no in-app purchases.
Which has better reviews, InterCalc or 2nd Calc?
InterCalc and 2nd Calc are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.
Do InterCalc or 2nd Calc have ads?
Neither InterCalc nor 2nd Calc shows ads.
Which is updated more often, InterCalc or 2nd Calc?
InterCalc ships an update every 11 months, and 2nd Calc every 6 months. Most recently, InterCalc was updated on October 17, 2026 and 2nd Calc on October 21, 2026.

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