# Linear Interpolation Master — Linear Interpolation > Linear interpolation calculator for industrial field engineers with coordinate swapping. (iPhone/iPad app by VERVE TECHNOLOGIES PTY. LTD..) - Source: https://appshunter.io/ios/app/linear-interpolation-master/id1433976994 (this page in markdown: same URL + `.md`) - Developer: [VERVE TECHNOLOGIES PTY. LTD.](https://appshunter.io/developer/582523354) - Category: Utilities, Productivity - Price: Free with in-app purchases - Rating: 4.70/5 from 176 App Store ratings · 8 written reviews indexed - Age rating: 4+ - Requires: iOS 11.0 · 16 MB - Languages: American English - Released: 2018-09-01 - Data updated: 2026-08-24 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/linear-interpolation-master/id1433976994/reviews.md ## What is Linear Interpolation Master? A linear interpolation calculator designed for industrial commissioning engineers. It has the following features: - Displays large numbers for when you are out in the field commissioning. - Allows quickly swapping x and y coordinates; for example from 4-20mA -> 0-100% to 0-100% -> 4-20mA. ## Key features - Large number display for field visibility - Quickly swap X and Y coordinates - 4-20mA to 0-100% conversion - 0-100% to 4-20mA conversion ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Generous Tip | $2.99 | one-time | | Massive Tip | $3.99 | one-time | | Amazing Tip | $4.99 | one-time | ## Recent user reviews (8 of 8) All indexed reviews: https://appshunter.io/ios/app/linear-interpolation-master/id1433976994/reviews.md ### 5/5 — Great App For Engineers *2025-11-09, version 2.0.4* :-) ### 3/5 — Where is the minus sign? *2023-07-15, version 1.0.4* Can’t enter negative numbers! ### 5/5 — Go get it! *2022-03-28, version 1.0.4* Simple to use, friendly and easy. It’s my go to interpolation tool for quick and easy calculations ### 5/5 — Needs negative numbers *2020-07-12, version 1.0.2* Handy program but it doesn’t allow entering negative numbers ### 1/5 — No negative values *2020-05-20, version 1.0.0* Not very useful if you cannot input negative values for temperature scaling. ### 3/5 — Good, but could be made great *2019-11-08, version 1.0.0* The keypad does not include the ability to make a negative number. ### 5/5 — Great App For Engineers *2018-09-10, version 1.0.0* :-) ### 5/5 — Perfect app! *2018-09-04, version 1.0.0* Simple to use and I love how you can easily swap between the x and y values rather than having to re-input values like the other apps I’ve used. ## Frequently asked questions about Linear Interpolation Master ### What does Linear Interpolation Master do? This application serves as a linear interpolation calculator specifically designed for industrial commissioning engineers. It helps in performing calculations required during field commissioning tasks. ### What are the key features of this app? The app features large numbers for easy readability in field environments. It also allows for the quick swapping of X and Y coordinates, enabling seamless conversion between different scales like 4-20mA to 0-100% and vice versa. ### Is this app free to use? The application is available for free download and use. However, it does include in-app purchases, suggesting that some features or content may require a purchase to unlock. ### Who is the target audience for this app? The primary target audience is industrial commissioning engineers. The app's design and features are tailored to meet the specific needs and challenges faced by professionals working in industrial settings. ### How does the coordinate swapping feature work? The coordinate swapping feature allows users to easily reverse the input and output scales of their interpolation calculations. For example, if you initially set up a calculation to convert 4-20mA signals to a 0-100% range, you can quickly switch it to convert 0-100% to 4-20mA without re-entering all the data. ## Version history (last 5 releases) ### 2.0.8 — 2025-11-13 Fixed a bug where the app my crash after making an in-app-purchase. ### 2.0.7 — 2025-11-12 Fixed a bug where the app my crash after making an in-app-purchase. ### 2.0.5 — 2025-11-10 Fixed a bug where the app my crash after making an in-app-purchase. ### 2.0.4 — 2025-11-09 Fixed a bug where the app my crash after making an in-app-purchase. ### 2.0.3 — 2025-02-10 Bug fixes, and performance improvements. ## Apps similar to Linear Interpolation Master | App | Rating | Price | Category | | --- | --- | --- | --- | | [Hydraulic Calculator Engineer](https://appshunter.io/ios/app/hydraulic-calculator-engineer/id1664790770) | 4.4 (10) | Free | Utilities | | [SuperCALC](https://appshunter.io/ios/app/supercalc/id566387194) | 4.3 (3) | Free | Utilities | | [PCalc](https://appshunter.io/ios/app/pcalc/id284666222) | 4.7 (770) | $9.99 | Utilities | | [Land Survey Calculator](https://appshunter.io/ios/app/land-survey-calculator/id1120109578) | 1.0 (1) | Free | Utilities | | [Archiscale-scale,formula,ruler](https://appshunter.io/ios/app/archiscale-scaleformularuler/id6692609479) | — | Free | Utilities | | [Gravel Calculator Plus](https://appshunter.io/ios/app/gravel-calculator-plus/id1504997190) | 4.8 (1,661) | Free | Utilities | ## More apps by VERVE TECHNOLOGIES PTY. LTD. - [Rain Radar+ Australia](https://appshunter.io/ios/app/rain-radar-plus-australia/id582523351) - [Rain Radar Australia](https://appshunter.io/ios/app/rain-radar-australia/id657192005) - [Tide Times Australia Plus](https://appshunter.io/ios/app/tide-times-australia-plus/id794278731) - [Tide Times NSW Plus](https://appshunter.io/ios/app/tide-times-nsw-plus/id797473213) - [Tide Times NT Plus](https://appshunter.io/ios/app/tide-times-nt-plus/id797473591) - [Tide Times QLD Plus](https://appshunter.io/ios/app/tide-times-qld-plus/id797477241) All apps by VERVE TECHNOLOGIES PTY. LTD.: https://appshunter.io/developer/582523354 ## Related topics [linear interpolation master](https://appshunter.io/ios/topics/linear-interpolation-master) · [linear interpolation](https://appshunter.io/ios/topics/linear-interpolation) --- *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 2026-08-24.*