# Interpolation 1.4 vs Steam Tables Lite

The clearest difference is in-app purchases: Interpolation 1.4 at none against Steam Tables Lite's 1. Interpolation 1.4 also leads on update cadence (every 3 weeks vs every 3 months) and review sentiment (33% vs 21%). On price, ads and device support there is nothing between them.

Both are free to download. Steam Tables Lite sells 1 one-off in-app purchase. Interpolation 1.4 asks for nothing beyond the download.

Interpolation 1.4 ships an update every 3 weeks, Steam Tables Lite every 3 months. The most recent releases landed on October 4, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Interpolation 1.4 | Steam Tables Lite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (6 ratings)](https://appshunter.io/ios/app/interpolation-14/id557950545/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | **33.3% of reviews** | 21.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 1 MB | 31 MB |
| Requires iOS | **9.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ZOFTERM](https://appshunter.io/developer/557950548) | [Eduardo Almeida](https://appshunter.io/developer/906209752) |

## What reviewers say

### Interpolation 1.4

[App page](https://appshunter.io/ios/app/interpolation-14/id557950545)

This utility calculates linear or quadratic interpolations. It provides a straightforward tool for mathematical estimations based on given data points.

**Highlights:** Linear interpolation calculation, Quadratic interpolation calculation, Mathematical estimation tool

**Features:** macOS Compatibility

**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, Vision Pro support

**In-app purchases (1)**

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


## Frequently asked questions

### Is Interpolation 1.4 free?

Interpolation 1.4 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.

### Do Interpolation 1.4 or Steam Tables Lite have ads?

Neither Interpolation 1.4 nor Steam Tables Lite shows ads.

### Which is updated more often, Interpolation 1.4 or Steam Tables Lite?

Interpolation 1.4 ships an update every 3 weeks, and Steam Tables Lite every 3 months. Most recently, Interpolation 1.4 was updated on October 4, 2026 and Steam Tables Lite on October 24, 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.*