Tri vs Slope Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Tri
This utility app provides the formula and value for calculating triangle properties. It's designed for quick access to mathematical formulas related to triangles.
- Triangle formula display
- Value calculation
- Quick access utility
- Mathematical formulas
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App to display a formula and value of a triangle.
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
Screenshots
Verdict
The clearest difference is rating: Tri at 5.0 against Slope Calculator's 4.3. Tri also leads on review sentiment (100% vs 58%) and in-app purchases (none vs 1). Slope Calculator's advantage is ads (none vs shown) and ratings volume (104 vs 1). On price, update cadence 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
Both are free to download. Slope Calculator sells 1 one-off in-app purchase. Tri asks for nothing beyond the download.
Tri holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Slope Calculator has 104 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of Tri's written reviews are positive against 58% of Slope Calculator's.
Tri ships an update every 12 months, Slope Calculator every 14 months. Both last shipped on September 16, 2026.
| Parameter | Tri | Slope Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.3 (104 ratings) |
| Positive reviews | 100.0% of reviews — better | 58.3% of reviews |
| Number of ratings | 1 | 104 — better |
| Update frequency | Every 12 months — better | Every 14 months |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Thirdware.jp | Phan Nhat Đang |
Customer experience
Tri
Slope Calculator
In-app purchases
Tri
No in-app purchases
Slope Calculator
- Remove ads$1.99
Questions
Is Tri free?
Is Slope Calculator free?
Which has better reviews, Tri or Slope Calculator?
Do Tri or Slope Calculator have ads?
Which is updated more often, Tri or Slope Calculator?
Other comparisons
