# Trig Solver vs Flat Pattern Bend Calculator

The clearest difference is in-app purchases: Trig Solver at none against Flat Pattern Bend Calculator's 6. Trig Solver also leads on ads (none vs shown) and review sentiment (74% vs 45%). Flat Pattern Bend Calculator's advantage is update cadence (every 2 months vs every 28 months) and rating (4.6 vs 4.3). On price, ratings volume and device support there is nothing between them.

Both are free to download. Flat Pattern Bend Calculator sells 6 in-app purchases, starting at $4.99 per 7 days. Trig Solver asks for nothing beyond the download.

Flat Pattern Bend Calculator holds the better App Store score, 4.6 against 4.3. Both are backed by a comparable volume of ratings — 78 and 151 respectively. Written reviews complicate that: 74% of Trig Solver's written reviews are positive against 45% of Flat Pattern Bend Calculator'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, Flat Pattern Bend Calculator every 2 months. The most recent releases landed on September 22, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Trig Solver | Flat Pattern Bend Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (78 ratings)](https://appshunter.io/ios/app/trig-solver/id398450227/reviews) | **[4.6 (151 ratings)](https://appshunter.io/ios/app/flat-pattern-bend-calculator/id1361485922/reviews)** |
| Number of ratings | 78 | **151** |
| Positive reviews | **74.1% of reviews** | 45.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 28 months | **Every 2 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 8 MB | 61 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Creature Code Mobile, LLC](https://appshunter.io/developer/386736750) | [Bhavinkumar Satashiya](https://appshunter.io/developer/1361485921) |

## 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


### Flat Pattern Bend Calculator

[App page](https://appshunter.io/ios/app/flat-pattern-bend-calculator/id1361485922)

This app provides accurate flat pattern layouts for complex sheet metal shapes and transitions. It simplifies calculations for cones, frustums, cylinders, and various transition pieces, saving time and reducing errors in fabrication projects.

**Highlights:** Cone calculations, Frustum calculations, Truncated cylinder layouts, Bend allowance calculations, Transition piece generation, Complex shape patterns

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $4.99 | per 7 days |
| MONTHLY UNLOCK | $6.99 | per month |
| Offer : Yearly Access | $29.99 | per year |
| Yearly Access | $39.99 | per year |
| YEARLY UNLOCK | $39.99 | per year |
| LIFETIME UNLOCK | $69.99 | one-time |


## Frequently asked questions

### Is Trig Solver free?

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

### Is Flat Pattern Bend Calculator free?

Flat Pattern Bend Calculator is free to download, with in-app purchases available.

### Which has better reviews, Trig Solver or Flat Pattern Bend Calculator?

Flat Pattern Bend Calculator is rated higher. Trig Solver averages 4.3 out of 5 from 78 ratings, while Flat Pattern Bend Calculator averages 4.6 from 151 ratings.

### Do Trig Solver or Flat Pattern Bend Calculator have ads?

Flat Pattern Bend Calculator shows ads; Trig Solver does not.

### Which is updated more often, Trig Solver or Flat Pattern Bend Calculator?

Trig Solver ships an update every 28 months, and Flat Pattern Bend Calculator every 2 months. Most recently, Trig Solver was updated on September 22, 2026 and Flat Pattern Bend Calculator on September 24, 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.*