Interpolator vs Steam Tables Lite
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Two-row interpolation
- Three-row interpolation
- Table value lookup
- No calculator needed
- Cargo surveyor tool
- General table use
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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.
Steam Tables Lite
This utility app calculates thermodynamic properties using IAPWS-97 equations. It allows users to determine various properties like pressure, temperature, enthalpy, and specific volume based on different input parameters. The app supports multiple units for calculations.
- IAPWS-97 equation calculations
- Calculate properties from pressure and temperature
- Calculate properties from pressure and enthalpy
- Calculate properties from pressure and entropy
- Calculate properties from pressure and quality
- Support for multiple units
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Steam Tables calculates the functions below, using the IAPWS-97 equations: •Function(p,t) – to calculate properties from pressure and temperature; •Function(p,h) – to calculate properties from pressure and enthalpy; •Function(p,s) – to calculate properties from pressure and entropy; •Function(p,x) – to calculate properties from pressure and quality; •Function(t,x) – to calculate properties from temperature and quality; •Function(h,s) – to calculate properties from entalpy and entropy. From the functions above, you can calculate quickly the properties below: •Pressure; •Temperature; •Enthalpy; •Entropy; •Quality; •Specific Volume; •Internal Energy; •Density; •See the current region. •Use multiple units. The best thermodynamic properties calculation in the App Store!!!!!
Screenshots
Verdict
The clearest difference is review sentiment: Interpolator at 67% against Steam Tables Lite's 21%. Interpolator also leads on rating (4.9 vs 1.0) and in-app purchases (none vs 1). On price, update cadence 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. Steam Tables Lite sells 1 one-off in-app purchase. Interpolator asks for nothing beyond the download.
Interpolator holds the better App Store score, 4.9 against 1.0. That said, the two scores are not equally well evidenced: Interpolator has 74 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 67% of Interpolator's written reviews are positive against 21% of Steam Tables Lite's.
Interpolator ships an update every 4 months, Steam Tables Lite every 2 months. The most recent releases landed on September 9, 2026 and September 10, 2026 respectively.
| Parameter | Interpolator | Steam Tables Lite |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (74 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 66.7% of reviews — better | 21.1% of reviews |
| Number of ratings | 74 — better | 1 |
| Update frequency | Every 4 months | Every 2 months — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 12.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 18 MB | 1 MB |
| Age rating | +4 | 4+ |
| Developer | ron mooring | Eduardo Almeida |
Customer experience
Interpolator
Steam Tables Lite
In-app purchases
Interpolator
No in-app purchases
Steam Tables Lite
- Upgrade Steam Tables$3.99
Questions
Is Interpolator free?
Is Steam Tables Lite free?
Which has better reviews, Interpolator or Steam Tables Lite?
Do Interpolator or Steam Tables Lite have ads?
Which is updated more often, Interpolator or Steam Tables Lite?
Other comparisons
