Gammon API Gravity Calculator vs S61 PPC
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Gammon API Gravity Calculator
Calculate corrected API gravity for jet, gasoline, and diesel fuels at 60°F. This digital tool also determines the total weight of the fuel, replicating the functionality of physical slide calculators.
- Corrected API gravity calculation
- Fuel weight calculation
- Supports jet, gasoline, and diesel fuels
- Digital slide calculator replacement
- Accurate at 60°F
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The GTP API Gravity Calculator 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.
S61 PPC
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Sikorsky S61N Performance Planning data on your wrist or your phone! Just flip your wrist and see how much power you will have for takeoff. Shows both OGE and IGE. Want a 500 pound power margin? No problem, just set the margin and the weight will turn yellow when inside your margin, green with plenty of margin and red if you are gross weight.
Screenshots
Verdict
The clearest difference is price: S61 PPC at $2.99 against Gammon API Gravity Calculator's $9.99. Gammon API Gravity Calculator's advantage is chart position (#31 vs unranked) and iOS requirement (8.0 vs 16.6). On 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
Gammon API Gravity Calculator costs $9.99 and S61 PPC $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Gammon API Gravity Calculator | S61 PPC |
|---|---|---|
| Price | $9.99 | $2.99 — better |
| Rating | 3.6 (10 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 10 — better | — |
| Update frequency | — | Every 48 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Best chart rank | #31 — better | — |
| Devices | iPhone, iPod | iPhone, iPad, Apple Watch — better |
| Requires iOS | 8.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 10 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Gammon Technical Products | Arsenal Dev LLC |
In-app purchases
Gammon API Gravity Calculator
No in-app purchases
S61 PPC
No in-app purchases
Questions
Is Gammon API Gravity Calculator free?
Is S61 PPC free?
Do Gammon API Gravity Calculator or S61 PPC have ads?
Other comparisons
