# Interpolator

> Table interpolation utility for two and three-dimensional data. (iPhone/iPad app by ron mooring.)

- Source: https://appshunter.io/ios/app/interpolator/id635235982 (this page in markdown: same URL + `.md`)
- Developer: [ron mooring](https://appshunter.io/developer/612283157)
- Category: Utilities, Productivity
- Price: Free
- Rating: 4.90/5 from 74 App Store ratings · 3 written reviews indexed
- Age rating: +4
- Requires: iOS 12.0 · 18 MB
- Languages: American English
- Released: 2013-04-22
- Data updated: 2026-08-21
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/interpolator/id635235982/reviews.md

## What is Interpolator?

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.

## Key features

- Two-row interpolation
- Three-row interpolation
- Table value lookup
- No calculator needed
- Cargo surveyor tool
- General table use

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/interpolator/id635235982/reviews.md

### 5/5 — Muito bom

*2019-09-17*

Prático e útil para quem usa tabelas em arqueações

### 3/5 — Good but could be better

*2018-11-07*

Really easy to use in terms of getting the number out you want. But why does it use the full keyboard? Surely there is a way to just use the keypad with a decimal point? 

Other than that very useful!

**Developer response:** Hi, we have changed the keyboard to use the number pad with decimal point in one of the previous versions after receiving your request. 
There is now also a button at the top of the keyboard that lets you put a - sign in front of the number (or remove it) when pressed. This will put a negative sign in front of the number after you have entered the first digit of the number. If there is a negative sign and you want to remove it, just press the button again and the negative sign will be removed from that number.

### 5/5 — Awesome

*2018-10-22*

Great app, use it for work.

## Frequently asked questions about Interpolator

### What is Interpolator used for?

Interpolator is a utility app designed to easily find values within tables using interpolation for two or three rows. It eliminates the need for manual calculations with a separate calculator.

### Is Interpolator free to use?

Yes, as of January 13, 2015, Interpolator has been made free until further notice. It does not have any in-app purchases or advertisements.

### What devices does Interpolator support?

Interpolator is available for iPhone and iPod devices. It is designed for iOS operating systems.

### How accurate is Interpolator?

With a rating of 4.9 stars from 65 ratings, users generally find Interpolator to be highly accurate and reliable for their interpolation needs.

### When was Interpolator last updated?

The latest version of Interpolator, 2.1.6, was last updated on December 19, 2025. This indicates regular maintenance and potential feature additions.

### What is the age rating for Interpolator?

Interpolator has an age rating of 4+, making it suitable for a wide range of users, including younger individuals who may be learning about data and calculations.

### Who developed Interpolator?

Interpolator was developed by ron mooring. The app has been available since its release on April 22, 2013.

## Version history (last 5 releases)

### 2.1.6 — 2025-12-19

Bug fixes and performance improvements

### 2.1.5 — 2025-05-06

Optimized for iOS 18

### 2.1.4 — 2022-06-19

Bugfixes and performance improvements. 
Optimized for iOS 15.4

### 2.1.3 — 2021-09-30

Bugfixes and performance improvements. 
Optimized for iOS 15.

### 2.1.2 — 2021-06-16

Updated to iOS 14.5

## Apps similar to Interpolator

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Interpolation Methods](https://appshunter.io/ios/app/interpolation-methods/id6557032923) | — | $1.99 | Utilities |
| [Flight-Time](https://appshunter.io/ios/app/flight-time/id672978586) | 4.4 (11) | Free | Utilities |
| [Tanker - The Sounding App](https://appshunter.io/ios/app/tanker-the-sounding-app/id1442173028) | 5.0 (1) | Free | Utilities |
| [Linear Interpolation Master](https://appshunter.io/ios/app/linear-interpolation-master/id1433976994) | 4.7 (176) | Free | Utilities |
| [Steam Tables Lite](https://appshunter.io/ios/app/steam-tables-lite/id1046405234) | 1.0 (1) | Free | Utilities |
| [CX-3 Flight Computer](https://appshunter.io/ios/app/cx-3-flight-computer/id1645428895) | 3.7 (11) | $19.99 | Utilities |

## More apps by ron mooring

- [Oilcalcs](https://appshunter.io/ios/app/oilcalcs/id612283154)
- [CargoSurveyor Tools](https://appshunter.io/ios/app/cargosurveyor-tools/id932816645)
- [AntiCollision](https://appshunter.io/ios/app/anticollision/id1505029525)

All apps by ron mooring: https://appshunter.io/developer/612283157

## Related topics

[linear interpolation master](https://appshunter.io/ios/topics/linear-interpolation-master) · [linear interpolation](https://appshunter.io/ios/topics/linear-interpolation)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-21.*