Slope Calculator vs Flight parameters
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Slope Calculator
Calculate slope in angle, percentage, or ratio by inputting two sides of a right triangle. This intuitive and easy-to-use application provides the remaining necessary values.
- Calculate slope as angle
- Calculate slope as percentage
- Calculate slope as ratio
- Input two sides of a right triangle
- Calculate remaining triangle values
- Intuitive and easy to use
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Use this App to calculate slope (Angle, Percentage, Ratio). You just need to enter 2 of the 3 sides of a right triangle, we will calculate for you the remaining necessary numbers. This is a very intuitive App, simple and easy to use. Results are estimates for informational purposes only. We are very happy to serve you. If you have any requests, don't hesitate to contact us. - https://www.facebook.com/phan.nhatdang.3/ - phannhatd@gmail.com
Flight parameters
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Calculation of standard ISA atmospheric parameters (pressure, density, temperature) Calculation of QNH altitude Calculation of MSA correction for off-standard atmospheres Conversion of calibrated air speed to mach number
Screenshots
Verdict
The clearest difference is price: Slope Calculator at Free against Flight parameters's $2.99. Slope Calculator also leads on iOS requirement (13.0 vs 15.4). Flight parameters's advantage is in-app purchases (none vs 1) and update cadence (every 3 weeks vs every 14 months). On ads 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
Slope Calculator is free to download; Flight parameters costs $2.99 up front. Slope Calculator sells 1 one-off in-app purchase. Flight parameters asks for nothing beyond the download.
Slope Calculator ships an update every 14 months, Flight parameters every 3 weeks. The most recent releases landed on October 19, 2026 and October 20, 2026 respectively.
| Parameter | Slope Calculator | Flight parameters |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 4.3 (104 ratings) — better | — |
| Positive reviews | 58.3% of reviews | — |
| Number of ratings | 104 — better | — |
| Update frequency | Every 14 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 — better | 15.4 |
| Further details — not scored | ||
| Size | 5 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Phan Nhat Đang | Konstantinos Ladiellis |
In-app purchases
Slope Calculator
- Remove ads$1.99
Flight parameters
No in-app purchases
Questions
Is Slope Calculator free?
Is Flight parameters free?
Do Slope Calculator or Flight parameters have ads?
Which is updated more often, Slope Calculator or Flight parameters?
Other comparisons
