Comparison

InterCalc vs QuantumPass

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

QuantumPass

Read full description

QuantumPass brings two worlds together: a password and key generator, and a small lab to discover quantum randomness. GENERATE • Passwords from 8 to 64 characters: lowercase, uppercase, digits, symbols, ambiguous-character exclusion, forbidden characters and required characters. The estimated entropy is shown with each result. • Diceware passphrases of 3 to 10 words, in French or English depending on the app language, with the separator of your choice. Strengthen a phrase with randomly drawn capitals, substitutions and suffix. • QRNG: 1 to 100 random bits, in binary, decimal, hexadecimal or Base64. • Blockchain RNG: 128 to 512-bit values in Hex, Base64 or Base58, for your keys and seeds. • All these values come from Apple's cryptographic generator. UNDERSTAND • BB84 demo: follow the key exchange between Alice and Bob, and watch Eve the eavesdropper given away by the error rate. • Qubit Lab: measure a simulated qubit in the Z or X basis and watch the statistics build up. • Bloch sphere: set the θ angle and compare theoretical probabilities with measured frequencies. • Reproducible mode: a seed to replay the same demonstration, in class or in a workshop. • PRNG vs TRNG: two animated panels to see the difference between simulated and hardware randomness. • Built-in tutorial and a 10-question quiz. PRACTICAL • Secure clipboard: whatever you copy stays on the device and is cleared after 60 seconds. • In French and English, on iPhone, iPad and Mac. • Tip Jar: support development right from the app. PRIVACY QuantumPass works offline. All calculations are performed on your device. No account, no ads, no data collected. QuantumPass is an educational tool: its "quantum generator" is a simulation, fed by the system's secure random source.

Screenshots

InterCalc4 screens
QuantumPass4 screens

Verdict

The call

The clearest difference is in-app purchases: InterCalc at none against QuantumPass's 3. On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. QuantumPass sells 3 one-off in-app purchases. InterCalc asks for nothing beyond the download.

UpkeepUpdate frequency

InterCalc ships an update every 11 months, QuantumPass every 10 months. The most recent releases landed on October 1, 2026 and October 6, 2026 respectively.

Scorecard1 real difference · 8 level
InterCalc versus QuantumPass: the parameters behind the verdict, then further details
ParameterInterCalcQuantumPass
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 11 monthsEvery 10 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS18.617.6 — better
Further details — not scored
Size1 MB3 MB
Age rating4+4+
DeveloperRiver Rock LogicValerie Otero

In-app purchases

None

InterCalc

No in-app purchases

3 purchases

QuantumPass

One-time3
  • Small coffee$1.99
  • Medium coffee$3.99
  • Large coffee$5.99

Questions

Is InterCalc free?
InterCalc is free to download, with no in-app purchases.
Is QuantumPass free?
QuantumPass is free to download, with in-app purchases available.
Do InterCalc or QuantumPass have ads?
Neither InterCalc nor QuantumPass shows ads.
Which is updated more often, InterCalc or QuantumPass?
InterCalc ships an update every 11 months, and QuantumPass every 10 months. Most recently, InterCalc was updated on October 1, 2026 and QuantumPass on October 6, 2026.

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