# Trumbull CTC vs Triangle Calculator Plus

The clearest difference is price: Trumbull CTC at Free against Triangle Calculator Plus's $3.99. Trumbull CTC also leads on update cadence (every 4 months vs every 23 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Trumbull CTC is free to download; Triangle Calculator Plus costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Trumbull CTC ships an update every 4 months, Triangle Calculator Plus every 23 months. The most recent releases landed on September 9, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Trumbull CTC | Triangle Calculator Plus |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/triangle-calculator-plus/id1623980558/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 23 months |
| Monetization | — | Paid |
| Size | 117 MB | 1 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Trumbull Career and Technical Center (OH)](https://appshunter.io/developer/1552411810) | [Heng Jia Liang](https://appshunter.io/developer/1532000635) |

## What reviewers say

### Trumbull CTC

[App page](https://appshunter.io/ios/app/trumbull-ctc/id1555155668)

**In-app purchases:** none


### Triangle Calculator Plus

[App page](https://appshunter.io/ios/app/triangle-calculator-plus/id1623980558)

This app instantly solves any triangle problem with multiple solver modes and live visualization. It provides complete triangle properties, step-by-step solutions, and supports various units. Ideal for students, engineers, and professionals needing quick, accurate triangle calculations.

**Highlights:** Multiple solver modes (SSS, SAS, ASA, AAS, SSA, Right Triangle), Live triangle visualization with real-time updates, Complete triangle properties (area, perimeter, circumradius, inradius), Step-by-step solution breakdown, Unit support for various measurements, Tap to copy results

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Trumbull CTC free?

Trumbull CTC is free to download, with no in-app purchases.

### Is Triangle Calculator Plus free?

Triangle Calculator Plus costs $3.99, with no in-app purchases.

### Do Trumbull CTC or Triangle Calculator Plus have ads?

Neither Trumbull CTC nor Triangle Calculator Plus shows ads.

### Which is updated more often, Trumbull CTC or Triangle Calculator Plus?

Trumbull CTC ships an update every 4 months, and Triangle Calculator Plus every 23 months. Most recently, Trumbull CTC was updated on September 9, 2026 and Triangle Calculator Plus on September 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*