WBAT Mobile vs GTP API Gravity Calculator2
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
WBAT Mobile
This app enables authorized users to create, save, and submit safety reports for their organization's safety programs directly from a mobile device. It supports various report types including ASAP, FRAT, LOSA, and incident reports, and allows users to view safety notices and messages.
- Create safety reports on mobile
- Submit reports from anywhere
- Supports ASAP, FRAT, LOSA, incident reports
- View safety notices and newsletters
- Send and receive WBAT messages
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The Web-Based Analytical Technology (WBAT) Mobile app, allows authorized users to create a report for their organization’s safety programs from anywhere, anytime. You can start, save, and submit a report on your mobile device. Depending upon your organization and your user privilege/employee group(s), WBAT Mobile supports the creation of the following reports: Aviation Safety Action Program (ASAP), Flight Risk Assessment Tool (FRAT), Line Observation Safety Audit (LOSA), incident, fatigue, and general safety/hazard. In addition, WBAT Mobile allows users to view and acknowledge safety notices, view safety newsletters/MOUs, and send and receive WBAT messages.
GTP API Gravity Calculator2
This application calculates the corrected API gravity at 60°F for jet, gasoline, and diesel fuels. It also determines the total weight of the fuel. It's a digital replacement for physical slide calculators.
- Corrected API gravity calculation
- Total fuel weight calculation
- Supports jet, gasoline, and diesel fuels
- Digital version of slide calculators
- Developed in 2025
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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.
Screenshots
Verdict
The clearest difference is review sentiment: GTP API Gravity Calculator2 at 100% against WBAT Mobile's 0%. GTP API Gravity Calculator2 also leads on chart position (#193 vs unranked) and iOS requirement (12.0 vs 15.1). WBAT Mobile's advantage is price (Free vs $9.99). On update cadence, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
WBAT Mobile is free to download; GTP API Gravity Calculator2 costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
WBAT Mobile ships an update every 3 months, GTP API Gravity Calculator2 every 2 months. The most recent releases landed on August 21, 2026 and September 8, 2026 respectively.
| Parameter | WBAT Mobile | GTP API Gravity Calculator2 |
|---|---|---|
| Price | Free — better | $9.99 |
| Rating | — | 4.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Best chart rank | — | #193 — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.1 | 12.0 — better |
| Further details — not scored | ||
| Size | 23 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | UTRS, Inc | Gammon Technical Products |
Customer experience
WBAT Mobile
GTP API Gravity Calculator2
In-app purchases
WBAT Mobile
No in-app purchases
GTP API Gravity Calculator2
No in-app purchases
Questions
Is WBAT Mobile free?
Is GTP API Gravity Calculator2 free?
Do WBAT Mobile or GTP API Gravity Calculator2 have ads?
Which is updated more often, WBAT Mobile or GTP API Gravity Calculator2?
Other comparisons
