# Interpolator vs Steam Tables Lite

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.

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.

## The numbers

| Metric | Interpolator | Steam Tables Lite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (74 ratings)](https://appshunter.io/ios/app/interpolator/id635235982/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/steam-tables-lite/id1046405234/reviews) |
| Number of ratings | **74** | 1 |
| Positive reviews | **66.7% of reviews** | 21.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 18 MB | 1 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | +4 | 4+ |
| Developer | [ron mooring](https://appshunter.io/developer/612283157) | [Eduardo Almeida](https://appshunter.io/developer/906209752) |

## What reviewers say

### Interpolator

[App page](https://appshunter.io/ios/app/interpolator/id635235982)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Steam Tables Lite

[App page](https://appshunter.io/ios/app/steam-tables-lite/id1046405234)

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.

**Highlights:** 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

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade Steam Tables | $3.99 | one-time |


## Frequently asked questions

### Is Interpolator free?

Interpolator is free to download, with no in-app purchases.

### Is Steam Tables Lite free?

Steam Tables Lite is free to download, with in-app purchases available.

### Which has better reviews, Interpolator or Steam Tables Lite?

Interpolator is rated higher. Interpolator averages 4.9 out of 5 from 74 ratings, while Steam Tables Lite averages 1.0 from 1 ratings.

### Do Interpolator or Steam Tables Lite have ads?

Steam Tables Lite shows ads; Interpolator does not.

### Which is updated more often, Interpolator or Steam Tables Lite?

Interpolator ships an update every 4 months, and Steam Tables Lite every 2 months. Most recently, Interpolator was updated on September 9, 2026 and Steam Tables Lite on September 10, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*