Gammon API Gravity Calculator

Name: Gammon API Gravity Calculator
Rating: 3.6 (10 reviews)
Author: Gammon Technical Products

by Gammon Technical Products

iPhone

Abandoned risk Last checked 31 Jul 2026

App Store ↗

Quick verdict

What it is: Store information collected; independent summary not yet available.
At a glance: $9.99

Categories and search queries

Official categories

Reference
Utilities

AppCorpus categories

Key functions

Function	Availability	Access	Scope	Evidence
Family Sharing	Yes	Unknown	App Store	Store published

Screens

No screenshots collected yet.

Pricing & paywalls

App Store

Price: $9.99

Last verified 31 Jul 2026

Ratings & reviews

App Store

3.6 10 ratings · App Store

4/5Works great but could use a better UI
This works great and I double checked with the wheel, though this could use a better user interface look. There is much unused white space in the app where they could have made the text and input boxes larger to scale with screen, because the numbers are small.

Ace00731 · 31 Jul 2026
5/5Quick & Simple
For many years I’ve been using this app when receiving fuel and always found it to be quick, simple and accurate. Many times I’ve checked the app against the wheel calculator and found the results identical. In fact, the wheel calculator can easily be misaligned or misread. We also keep the wheel calculator on hand and run calculations on it and on the app before rejecting a fuel load.

Wordman · 31 Jul 2026
3/5Works … where’s 100LL
This app works great, buts it’s missing 100LL for aviation use. This will get a FIVE STAR when this comes out.

Unhappy Trial User USA · 31 Jul 2026
2/5DOES NOT MATCH GTP-3012
I purchased this for easier reading of API Gravity readings when receiving fuel loads. I’ve checked it a few times against the “wheel” and it’s been .02 to .04 higher with each reading. That can result in a rejected load of fuel. Spent $10 on a item I can’t rely on.

KAVU · 31 Jul 2026
5/5I use this daily
I use this app on a daily basis. I used to haul Jet A, so we’re always having to sample before offloading. Yeah there was a time or two where I was .01 or .02 off from the receivers wheel, but not far enough off for them to reject the load. I now haul gasoline, and utilize this app for loading my truck based off of the gravity/weight of the fuel. I will find out what the gravity is, enter it in and the see how many gallons I can load based off of the weight. I’ve been able to load anywhere from 50 gallons to 500 gallons more then I used to haul. Bigger payload equals more money. I was really hesitant at first loading my truck this way, so I slowly started adding 50-100 gallons to verify the weight calculations. I’ve been doing it this way now for a few months and haven’t had any problems with going through weight stations. I’m always within a couple hundred pounds of what I can legally gross. As far as other things the previous reviews said, I agree with the waste of space on the screen and small numbers. As far as selecting the type of fuel, I had that problem at first also. But it’s actually irrelevant anyway, it doesn’t matter if you’re dealing with jet, diesel or gasoline, the numbers always come out the same as long as you enter them correctly.

18ldm · 31 Jul 2026

Privacy & accessibility

App Store

Privacy

No Details Provided Developer declared

Accessibility

No accessibility labels collected yet.

Versions

App Store

1.0 · 8 Nov 2016
This update from Apple will improve the functionality of this app. No new features are included.

Availability by market

Data quality & evidence

Page completeness: Live store listing
Last verified: 31 Jul 2026
Sources: App Store

Independent summary has not been published yet.
Screenshots: not yet collected

Report a correction

Use this page with an AI agent

AppCorpus MCP gives your agent current app data, prices, screens, features and sources.

Example prompt

Compare this app with its closest alternatives.

View JSON

GET /api/v3/apps/1163782117

{
  "app_id": 1163782117,
  "canonical_url": "https://appcorpus.com/apps/gammon-api-gravity-calculator-1163782117",
  "identity": {
    "name": "Gammon API Gravity Calculator",
    "slug": "gammon-api-gravity-calculator",
    "developer": {
      "name": "Gammon Technical Products",
      "url": "https://appcorpus.com/developers/gammon-technical-products-developer_788674a97b26aa9634c4da0a0a971342"
    },
    "icon_url": "https://is1-ssl.mzstatic.com/image/thumb/Purple71/v4/8e/b3/ba/8eb3baf7-6399-d963-5da1-9ab7dee0a06e/pr_source.png/512x512bb.jpg",
    "stores": [
      "apple"
    ],
    "platforms": [
      "iphone"
    ],
    "status": {
      "state": "abandoned-risk",
      "label": "Abandoned risk",
      "last_checked": "2026-07-31",
      "last_checked_label": "31 Jul 2026",
      "banner": null,
      "region_note": null
    }
  },
  "listings": [
    {
      "store": "apple",
      "status": "ACTIVE",
      "url": "https://apps.apple.com/us/app/gammon-api-gravity-calculator/id1163782117?uo=4",
      "rating": 3.6,
      "rating_count": 10,
      "formatted_price": "$9.99",
      "is_free": false,
      "has_iap": false,
      "has_subscription": false,
      "version": "1.0",
      "updated": "2016-11-08",
      "currency": "USD"
    }
  ],
  "summary": {
    "one_liner": null,
    "summary": null,
    "best_for": [],
    "not_for": [],
    "status": "fallback",
    "at_a_glance": [
      "$9.99"
    ]
  },
  "categories": {
    "official": [
      "Reference",
      "Utilities"
    ],
    "appcorpus": [
      {
        "category_id": "reference",
        "label": "Reference",
        "url": "https://appcorpus.com/categories/reference"
      },
      {
        "category_id": "utilities",
        "label": "Utilities",
        "url": "https://appcorpus.com/categories/utilities"
      }
    ]
  },
  "use_cases": [],
  "features": [
    {
      "capability_id": "family_sharing",
      "label": "Family Sharing",
      "availability": "yes",
      "access_level": "unknown",
      "scope": "App Store",
      "evidence": "Store published"
    }
  ],
  "pricing": [
    {
      "store": "apple",
      "formatted_price": "$9.99",
      "is_free": false,
      "has_iap": false,
      "has_subscription": false,
      "currency": "USD",
      "market": "us",
      "last_verified": "2026-07-31",
      "rows": [
        "Price: $9.99"
      ]
    }
  ],
  "screens": [],
  "ratings": [
    {
      "store": "apple",
      "average": 3.6,
      "count": 10,
      "market": "us",
      "observed_at": "2026-07-31",
      "reviews": [
        {
          "rating": 4,
          "title": "Works great but could use a better UI",
          "body": "This works great and I double checked with the wheel, though this could use a better user interface look. There is much unused white space in the app where they could have made the text and input boxes larger to scale with screen, because the numbers are small.",
          "author": "Ace00731",
          "date": "31 Jul 2026"
        },
        {
          "rating": 5,
          "title": "Quick & Simple",
          "body": "For many years I’ve been using this app when receiving fuel and always found it to be quick, simple and accurate. Many times I’ve checked the app against the wheel calculator and found the results identical. In fact, the wheel calculator can easily be misaligned or misread. We also keep the wheel calculator on hand and run calculations on it and on the app before rejecting a fuel load.",
          "author": "Wordman",
          "date": "31 Jul 2026"
        },
        {
          "rating": 3,
          "title": "Works … where’s 100LL",
          "body": "This app works great, buts it’s missing 100LL for aviation use. This will get a FIVE STAR when this comes out.",
          "author": "Unhappy Trial User USA",
          "date": "31 Jul 2026"
        },
        {
          "rating": 2,
          "title": "DOES NOT MATCH GTP-3012",
          "body": "I purchased this for easier reading of API Gravity readings when receiving fuel loads. I’ve checked it a few times against the “wheel” and it’s been .02 to .04 higher with each reading. That can result in a rejected load of fuel. Spent $10 on a item I can’t rely on.",
          "author": "KAVU",
          "date": "31 Jul 2026"
        },
        {
          "rating": 5,
          "title": "I use this daily",
          "body": "I use this app on a daily basis. I used to haul Jet A, so we’re always having to sample before offloading. Yeah there was a time or two where I was .01 or .02 off from the receivers wheel, but not far enough off for them to reject the load. I now haul gasoline, and utilize this app for loading my truck based off of the gravity/weight of the fuel. I will find out what the gravity is, enter it in and the see how many gallons I can load based off of the weight. I’ve been able to load anywhere from 50 gallons to 500 gallons more then I used to haul. Bigger payload equals more money. I was really hesitant at first loading my truck this way, so I slowly started adding 50-100 gallons to verify the weight calculations. I’ve been doing it this way now for a few months and haven’t had any problems with going through weight stations. I’m always within a couple hundred pounds of what I can legally gross. As far as other things the previous reviews said, I agree with the waste of space on the screen and small numbers. As far as selecting the type of fuel, I had that problem at first also. But it’s actually irrelevant anyway, it doesn’t matter if you’re dealing with jet, diesel or gasoline, the numbers always come out the same as long as you enter them correctly.",
          "author": "18ldm",
          "date": "31 Jul 2026"
        }
      ]
    }
  ],
  "privacy": [
    {
      "store": "apple",
      "declarations": [
        {
          "title": "No Details Provided",
          "detail": "",
          "source": "Developer declared"
        }
      ],
      "accessibility": []
    }
  ],
  "changes": [
    {
      "store": "apple",
      "version": "1.0",
      "released_at": "2016-11-08",
      "notes": "This update from Apple will improve the functionality of this app. No new features are included."
    }
  ],
  "alternatives": [],
  "evidence_summary": {
    "index_state": "S1",
    "evidence_level": 1,
    "level_label": "Live store listing",
    "indexable": true,
    "last_verified_at": "2026-07-31",
    "unknown_fields": [
      "Independent summary has not been published yet.",
      "Screenshots: not yet collected"
    ],
    "sources": [
      "App Store"
    ]
  },
  "availability_markets": {
    "live": [
      "us"
    ],
    "selected": "us",
    "note": null
  },
  "feature_events": {
    "events": []
  },
  "features_slice": {
    "plans": [],
    "features": [],
    "unknown_features": [
      "family_sharing"
    ],
    "data_cutoff": "31 Jul 2026"
  }
}