Tri vs Cave 09
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.
Cave 09
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Explore the depths of the underground world with Cave09, your essential tool for efficient cave mapping. Designed by cavers for cavers, Cave09 offers data input for mapping, automatic map generation based on input data, and map export, all with full offline functionality. - Full Offline Functionality: Cave09 works perfectly without an internet connection, allowing you to map caves anytime, anywhere. - Efficient Cave Mapping: Easily input cave data, including station/point distances, compass angles, inclinations, and left-right-up-down distances. Let Cave09 handle the rest with automatic map generation. - Export Maps: Save and export your cave maps to image files, making documentation and sharing easy. - User-Friendly Interface: Cave09’s intuitive design ensures a smooth experience for both professional surveyors and hobbyist explorers.
Screenshots
Verdict
The clearest difference is ads: Cave 09 at none against Tri's shown. Cave 09 also leads on update cadence (every 2 months vs every 12 months) and iOS requirement (13.0 vs 15.6). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Tri ships an update every 12 months, Cave 09 every 2 months. The most recent releases landed on September 16, 2026 and September 18, 2026 respectively.
| Parameter | Tri | Cave 09 |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 12 months | Every 2 months — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Thirdware.jp | Muhammad Yusuf |
In-app purchases
Tri
No in-app purchases
Cave 09
No in-app purchases
