# Trig Solver vs Pipe Trades Pro Calc

The clearest difference is rating: Pipe Trades Pro Calc at 4.8 against Trig Solver's 4.3. Pipe Trades Pro Calc also leads on ratings volume (4.3K vs 78) and update cadence (every 7 months vs every 28 months). Trig Solver's advantage is in-app purchases (none vs 6) and review sentiment (74% vs 42%). On price, ads and device support there is nothing between them.

Both are free to download. Pipe Trades Pro Calc sells 2 in-app purchases, starting at $4.99 per month. Trig Solver asks for nothing beyond the download.

Pipe Trades Pro Calc holds the better App Store score, 4.8 against 4.3. That said, the two scores are not equally well evidenced: Pipe Trades Pro Calc has 4.3K ratings behind it against 78, so its average is the more settled of the two. Written reviews complicate that: 74% of Trig Solver's written reviews are positive against 42% of Pipe Trades Pro Calc's, so the app with the better star average is not the one people write more warmly about.

Trig Solver ships an update every 28 months, Pipe Trades Pro Calc every 7 months. The most recent releases landed on September 22, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Trig Solver | Pipe Trades Pro Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (78 ratings)](https://appshunter.io/ios/app/trig-solver/id398450227/reviews) | **[4.8 (4.3K ratings)](https://appshunter.io/ios/app/pipe-trades-pro-calc/id596142100/reviews)** |
| Number of ratings | 78 | **4.3K** |
| Positive reviews | **74.1% of reviews** | 42.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 7 months** |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | — | **#195** |
| Size | 8 MB | 51 MB |
| Requires iOS | **9.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Creature Code Mobile, LLC](https://appshunter.io/developer/386736750) | [Calculated Industries](https://appshunter.io/developer/370406449) |

## What reviewers say

### Trig Solver

[App page](https://appshunter.io/ios/app/trig-solver/id398450227)

This application calculates unknown sides and angles of both regular and right triangles. It supports various input combinations, including two sides and an angle, two angles and a side, three sides, or two sides and an angle for right triangles.

**Highlights:** Regular triangle solver, Right triangle solver, Calculate with 2 sides and an angle, Calculate with 2 angles and a side, Calculate with 3 sides, Calculate with side and angle (right triangle)

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Simple and easy to use
- 🚀 Fast calculations
- ✅ Accurate results (for many users)
- 💡 Useful for schoolwork
- 🛠️ Great for job site/machinists

**What reviewers complain about**

- 🐛 Inaccurate results reported
- 💸 Ads are present and distracting
- 📉 Rounding issues
- 🚫 No option to remove ads (for some)
- ⚠️ App stopped working after updates

**Reported bugs**

- Calculator rounds to '7' and '0'
- Regular triangle calculations not correct
- Answers in the wrong place (angles reversed)
- App doesn't work anymore after update
- Can't see input in dark mode

**Requested features**

- Rotate the triangle
- Show the work/steps
- Add square root functionality
- Option to pay to remove ads
- Modify single value without reset


### Pipe Trades Pro Calc

[App page](https://appshunter.io/ios/app/pipe-trades-pro-calc/id596142100)

**Currently charting:** #195 Top Grossing · Utilities (US App Store)

This app provides advanced calculation tools and comprehensive data for pipe trade professionals. It streamlines workflows for pipefitters, welders, and steamfitters with features for measurements, fluid dynamics, and material specifications. Designed for efficiency and accuracy, it works offline for on-site use.

**Highlights:** Advanced measurement calculations, Fluid dynamics and pressure analysis, Comprehensive pipe data access, Offline functionality, User-centric interface, Material and dimension options

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Full Access | $4.99 | per month |
| 1 Year Full Access | $39.99 | per year |

**What reviewers like**

- 🔢 Useful calculator tool
- 🧠 Helpful for pipe fitters and welders
- 📱 Convenient to have on mobile device
- 🔍 Accurate calculations

**What reviewers complain about**

- 💰 Subscription model is too expensive
- 🔒 Requires internet connection to verify subscription
- 🔄 Used to be a one-time purchase
- 🤔 Confusing transition from one-time to subscription

**Reported bugs**

- App freezes or stops working after updates
- Calculation errors with fractions
- Issues with reinstalling or transferring purchases

**Requested features**

- Ability to use app without subscription
- Support for larger pipe sizes
- Add a back/undo button
- Rotate screen orientation


## Frequently asked questions

### Is Trig Solver free?

Trig Solver is free to download, with no in-app purchases.

### Is Pipe Trades Pro Calc free?

Pipe Trades Pro Calc is free to download, with in-app purchases available.

### Which has better reviews, Trig Solver or Pipe Trades Pro Calc?

Pipe Trades Pro Calc is rated higher. Trig Solver averages 4.3 out of 5 from 78 ratings, while Pipe Trades Pro Calc averages 4.8 from 4.3K ratings.

### Do Trig Solver or Pipe Trades Pro Calc have ads?

Neither Trig Solver nor Pipe Trades Pro Calc shows ads.

### Which is updated more often, Trig Solver or Pipe Trades Pro Calc?

Trig Solver ships an update every 28 months, and Pipe Trades Pro Calc every 7 months. Most recently, Trig Solver was updated on September 22, 2026 and Pipe Trades Pro Calc on September 27, 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.*