Tri vs Tredecuple Calc
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.
Tredecuple Calc
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Display 13 calculators and perform calculations with each one.
Screenshots
Verdict
The clearest difference is update cadence: Tredecuple Calc at every 2 weeks against Tri's every 12 months. On price, 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
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, Tredecuple Calc every 2 weeks. The most recent releases landed on October 3, 2026 and July 31, 2026 respectively.
| Parameter | Tri | Tredecuple Calc |
|---|---|---|
| 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 weeks — better |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.6 — better | 15.8.3 |
| Further details — not scored | ||
| Size | 4 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | Thirdware.jp | Hideaki Uchikoshi |
In-app purchases
Tri
No in-app purchases
Tredecuple Calc
No in-app purchases
