# GTP API Gravity Calculator2

> GTP API Gravity Calculator2 (iPhone/iPad app by Gammon Technical Products.)

- Source: https://appshunter.io/ios/app/gtp-api-gravity-calculator2/id6742924006 (this page in markdown: same URL + `.md`)
- Developer: [Gammon Technical Products](https://appshunter.io/developer/1163782116)
- Category: Utilities, Education
- Price: $9.99
- Age rating: 4+
- Requires: iOS 12.0 · 9 MB
- Languages: American English
- Released: 2025-04-08
- Data updated: 2026-08-20
- User reviews in markdown: https://appshunter.io/ios/app/gtp-api-gravity-calculator2/id6742924006/reviews.md

## What is GTP API Gravity Calculator2?

The GTP API Gravity Calculator v2 (Developed 2025) from Gammon Technical Products, Inc. provides users the ability to determine corrected API at 60 Deg F for jet, gasoline, and diesel fuels.  The calculator is a digital version of our GTP-3012-1A and GTP-2727EF slide calculators and it also is capable of calculating the total weight of the fuel.

## Chart rankings

- #184 in Top Paid · Utilities (US App Store)


## Version history (last 2 releases)

### 1.3 — 2025-06-20

We have made updates for UI misbehaviour during Dark Mode.

### 1.0 — 2025-04-08

No release notes.

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## More apps by Gammon Technical Products

- [Gammon API Gravity Calculator](https://appshunter.io/ios/app/gammon-api-gravity-calculator/id1163782117)

All apps by Gammon Technical Products: https://appshunter.io/developer/1163782116

## Related topics

[gammon api gravity calculator](https://appshunter.io/ios/topics/gammon-api-gravity-calculator) · [gammon technical products](https://appshunter.io/ios/topics/gammon-technical-products)

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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 2026-08-20.*