Comparison

Interpolator vs Interp Calculator

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

Head to head
About

Interpolator

Easily find values within tables using interpolation for two or three rows. This utility app simplifies calculations without needing a separate calculator, making it ideal for various table-based environments.

Highlights
  • Two-row interpolation
  • Three-row interpolation
  • Table value lookup
  • No calculator needed
  • Cargo surveyor tool
  • General table use
Features
Read full description

This is a small app which makes it very easy to look up values in tables (math etc) when you have to interpolate both in two and in three rows. No more need for a calculator to interpolate manually. This app was designed primarily for cargo surveyors working with tank calibration tables, but the app does have its application in any environment where tables are used. As of 13th January 2015, this app has become FREE until further notice.

About

Interp Calculator

Features
Read full description

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

Interpolator4 screens
Interp Calculator4 screens

Verdict

The call

The clearest difference is price: Interpolator at Free against Interp Calculator's $0.99. Interpolator also leads on update cadence (every 4 months vs every 15 months) and iOS requirement (12.0 vs 15.0). On 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

CostPrice · In-app purchases · Ads · Monetization

Interpolator is free to download; Interp Calculator costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Interpolator ships an update every 4 months, Interp Calculator every 15 months. The most recent releases landed on October 23, 2026 and October 6, 2026 respectively.

Scorecard3 real differences · 7 level
Interpolator versus Interp Calculator: the parameters behind the verdict, then further details
ParameterInterpolatorInterp Calculator
PriceFree — better$0.99
Rating4.9 (75 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings75 — better—
Update frequencyEvery 4 months — betterEvery 15 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size18 MB22 MB
Age rating+44+
Developerron mooringStanislav Soroka

In-app purchases

None

Interpolator

No in-app purchases

None

Interp Calculator

No in-app purchases

Questions

Is Interpolator free?
Interpolator is free to download, with no in-app purchases.
Is Interp Calculator free?
Interp Calculator costs $0.99, with no in-app purchases.
Do Interpolator or Interp Calculator have ads?
Neither Interpolator nor Interp Calculator shows ads.
Which is updated more often, Interpolator or Interp Calculator?
Interpolator ships an update every 4 months, and Interp Calculator every 15 months. Most recently, Interpolator was updated on October 23, 2026 and Interp Calculator on October 6, 2026.

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