InterCalc vs Interp Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
Interp Calculator
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Interpolation Calculator is a fast and practical tool for performing linear and bilinear interpolation directly on your device. Designed for engineers, students, technicians, scientists, and anyone working with numerical data, tables, formulas, or technical calculations, the app helps you quickly calculate intermediate values between known data points. KEY FEATURES • Linear Interpolation Calculate an unknown value between two known data points quickly and accurately. • Bilinear Interpolation Determine an intermediate value inside a two-dimensional data grid using four surrounding values. • Fast and Simple Calculations Enter the required numerical values and get the result immediately. • Works Offline No internet connection is required. Use the calculator anywhere — at work, in class, in the laboratory, on site, or while travelling. • Clean and Practical Interface A simple interface keeps the focus on calculations without unnecessary menus or distractions. • Light and Dark Themes Choose the appearance that is most comfortable for your working environment. USEFUL FOR Interpolation Calculator can be used in many technical and educational fields, including: • Engineering • Mathematics • Physics • Technical calculations • Scientific calculations • Numerical analysis • Tabular data processing • Laboratory work • Education and study Whether you need to interpolate values from engineering tables, calculate an intermediate result for a technical task, or solve interpolation exercises, Interpolation Calculator provides a convenient way to perform calculations quickly and efficiently. No internet connection. No complicated setup. Just enter your values and calculate.
Screenshots
Verdict
The clearest difference is price: InterCalc at Free against Interp Calculator's $0.99. Interp Calculator's advantage is iOS requirement (15.0 vs 18.6). On update cadence, ads, 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
InterCalc is free to download; Interp Calculator costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
InterCalc ships an update every 11 months, Interp Calculator every 15 months. The most recent releases landed on October 17, 2026 and October 6, 2026 respectively.
| Parameter | InterCalc | Interp Calculator |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 11 months — better | Every 15 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 18.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | River Rock Logic | Stanislav Soroka |
In-app purchases
InterCalc
No in-app purchases
Interp Calculator
No in-app purchases
Questions
Is InterCalc free?
Is Interp Calculator free?
Do InterCalc or Interp Calculator have ads?
Which is updated more often, InterCalc or Interp Calculator?
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