# Triangle Simulator vs RigPro Care

The clearest difference is in-app purchases: RigPro Care at none against Triangle Simulator's 1. RigPro Care also leads on ads (none vs shown). Triangle Simulator's advantage is update cadence (every 2 months vs every 46 months). On price, review sentiment, device support and iOS requirement there is nothing between them.

Both are free to download. Triangle Simulator sells 1 in-app purchase, starting at $1.99 per month. RigPro Care asks for nothing beyond the download.

Triangle Simulator ships an update every 2 months, RigPro Care every 46 months. The most recent releases landed on September 25, 2026 and June 7, 2026 respectively.

## The numbers

| Metric | Triangle Simulator | RigPro Care |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 46 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 65 MB | 1 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Toshiya Hondo](https://appshunter.io/developer/1571875732) | [Ceyentra](https://appshunter.io/developer/1438381080) |

## What reviewers say

### Triangle Simulator

[App page](https://appshunter.io/ios/app/triangle-simulator/id1583116107)

Calculate triangle properties like sides, angles, and area instantly. Save and review past calculations with added memos. Supports various input formats and angle units for precise results.

**Highlights:** Calculate triangle sides, angles, and area, View triangle image, Save calculation history, Add memos to calculations, Input sides in square rooted values, Adjust result digit count, Choose angle units

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads (Monthly) | $1.99 | per month |


### RigPro Care

[App page](https://appshunter.io/ios/app/rigpro-care/id1590102089)

This application provides vessel owners and managers with online access to service logs, upcoming maintenance schedules, and important documentation. It ensures captains have peace of mind by tracking and reminding them of necessary service tasks.

**Highlights:** Online service log access, View past and scheduled services, Clarity on service requirements, Service reminders for captains, Secure document sharing, Support case management

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Triangle Simulator free?

Triangle Simulator is free to download, with in-app purchases available.

### Is RigPro Care free?

RigPro Care is free to download, with no in-app purchases.

### Do Triangle Simulator or RigPro Care have ads?

Triangle Simulator shows ads; RigPro Care does not.

### Which is updated more often, Triangle Simulator or RigPro Care?

Triangle Simulator ships an update every 2 months, and RigPro Care every 46 months. Most recently, Triangle Simulator was updated on September 25, 2026 and RigPro Care on June 7, 2026.

---

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