# Calculator + vs Trig Solver

The clearest difference is in-app purchases: Trig Solver at none against Calculator +'s 12. Trig Solver also leads on ads (none vs shown) and iOS requirement (9.0 vs 16.4). Calculator +'s advantage is update cadence (every 4 days vs every 28 months) and ratings volume (10K vs 78). On price and device support there is nothing between them.

Both are free to download. Calculator + sells 12 in-app purchases, starting at $4.99 per month. Trig Solver asks for nothing beyond the download.

Calculator + holds the better App Store score, 4.6 against 4.3. That said, the two scores are not equally well evidenced: Calculator + has 10K ratings behind it against 78, so its average is the more settled of the two. Written reviews point the same way: 85% of Calculator +'s written reviews are positive against 74% of Trig Solver's.

Calculator + ships an update every 4 days, Trig Solver every 28 months. The most recent releases landed on September 26, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Calculator + | Trig Solver |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (10K ratings)](https://appshunter.io/ios/app/calculator-plus/id351815470/reviews)** | [4.3 (78 ratings)](https://appshunter.io/ios/app/trig-solver/id398450227/reviews) |
| Number of ratings | **10K** | 78 |
| Positive reviews | **84.9% of reviews** | 74.1% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 4 days** | Every 28 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 48 MB | 8 MB |
| Requires iOS | 16.4 | **9.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [xNeat.com](https://appshunter.io/developer/327498295) | [Creature Code Mobile, LLC](https://appshunter.io/developer/386736750) |

## What reviewers say

### Calculator +

[App page](https://appshunter.io/ios/app/calculator-plus/id351815470)

This app offers a free basic and scientific calculator with an intuitive interface. It supports fractions, percentages, and advanced editing. Optional upgrades provide specialized calculators for fractions with units, polynomial and linear equation solving, graphing, and geometric shapes.

**Highlights:** Free basic and scientific calculator, Intuitive interface with equation and result display, Fraction and percent support, Advanced editing capabilities, Polynomial and linear equation solver, Graphing calculator, Unit conversion and geometric calculators

**Features:** Vision Pro support

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Scientific Calculator | $4.99 | per month |
| Calculator | $39.99 | per year |
| Linear Calculator | $2.99 | one-time |
| Factoring Calculator | $2.99 | one-time |
| Handwriting Calculator | $2.99 | one-time |
| Currency Converter | $2.99 | one-time |
| Themes Pack | $2.99 | one-time |
| Graphing Calculator | $3.99 | one-time |
| Fraction Calculator | $3.99 | one-time |
| Scientific Calculator | $4.99 | one-time |
| Calculator Plus | $4.99 | one-time |
| Calculator | $16.99 | one-time |

**What reviewers like**

- 👍 Great features and easy to use
- 👍 Efficient and quick
- 👍 Versatile, functional calculator
- 👍 Fantastic, easy to use app
- 👍 Awesome calculator app

**What reviewers complain about**

- 🐛 New updated layout is awful
- 🐛 App is now terrible
- 🔒 Paying customer screwed over by update
- 🔒 Now timed trial, no free w/ads version
- 🔒 Not honest

**Reported bugs**

- Fraction calculator has TWO subtraction buttons and NO division button
- Decimals seem to be changed to fraction with no apparent way of changing it back
- Functionality is dropped by forcing you to the main menu every time you open it
- Currency converter broken
- Login screen freezes

**Requested features**

- Add mod function
- Add commas
- Add 1/x function
- Support for Retina Display
- Add number 4 with two lines


### 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


## Frequently asked questions

### Is Calculator + free?

Calculator + is free to download, with in-app purchases available.

### Is Trig Solver free?

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

### Which has better reviews, Calculator + or Trig Solver?

Calculator + is rated higher. Calculator + averages 4.6 out of 5 from 10K ratings, while Trig Solver averages 4.3 from 78 ratings.

### Do Calculator + or Trig Solver have ads?

Calculator + shows ads; Trig Solver does not.

### Which is updated more often, Calculator + or Trig Solver?

Calculator + ships an update every 4 days, and Trig Solver every 28 months. Most recently, Calculator + was updated on September 26, 2026 and Trig Solver on September 22, 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.*