InterCalc vs The Best Unit Converter
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.
The Best Unit Converter
Easily convert between various units with a simple interface. This application supports numerous conversions, allowing you to switch between different units and back again with just a few taps.
- Multiple unit conversions
- Simple and clean design
- Easy to use interface
- Converts units and back again
- Supports various measurement types
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Easy access to the conversions of all the units you need. This app allows you to convert with the touch of a few buttons from one unit to another and back again! So, from miles to Kilometers, kilometers to miles, Fahrenheit to Celsius, Celsius to Fahrenheit. You name it! Whatever units you need, we have it right here.
Screenshots
Verdict
The clearest difference is rating: InterCalc at 5.0 against The Best Unit Converter's 4.2. InterCalc also leads on in-app purchases (none vs 3). The Best Unit Converter's advantage is update cadence (weekly vs every 11 months) and ratings volume (5 vs 1). On price, ads 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
Both are free to download. The Best Unit Converter sells 3 one-off in-app purchases. InterCalc asks for nothing beyond the download.
InterCalc holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: The Best Unit Converter has 5 ratings behind it against 1, so its average is the more settled of the two.
InterCalc ships an update every 11 months, The Best Unit Converter weekly. The most recent releases landed on October 17, 2026 and October 22, 2026 respectively.
| Parameter | InterCalc | The Best Unit Converter |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.2 (5 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 5 — better |
| Update frequency | Every 11 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | River Rock Logic | Michael Baron |
Customer experience
InterCalc
The Best Unit Converter
In-app purchases
InterCalc
No in-app purchases
The Best Unit Converter
- Remove Ads$0.99
- More Units$0.99
- Intrasystem Conversions$1.99
Questions
Is InterCalc free?
Is The Best Unit Converter free?
Which has better reviews, InterCalc or The Best Unit Converter?
Do InterCalc or The Best Unit Converter have ads?
Which is updated more often, InterCalc or The Best Unit Converter?
Other comparisons
