# Calculator + vs TriSolver

The clearest difference is rating: Calculator + at 4.6 against TriSolver's 1.0. Calculator + also leads on update cadence (every 5 days vs every 3 months) and ratings volume (10K vs 1). TriSolver's advantage is ads (none vs shown) and monetization model (free vs free with in-app purchases). On price, in-app purchases 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 and TriSolver sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Calculator + holds the better App Store score, 4.6 against 1.0. That said, the two scores are not equally well evidenced: Calculator + has 10K ratings behind it against 1, so its average is the more settled of the two.

Calculator + ships an update every 5 days, TriSolver every 3 months. The most recent releases landed on October 6, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Calculator + | TriSolver |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (10K ratings)](https://appshunter.io/ios/app/calculator-plus/id351815470/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/trisolver-triangle-solver/id1066749681/reviews) |
| Number of ratings | **10K** | 1 |
| Positive reviews | 84.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Every 3 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 49 MB | 21 MB |
| Requires iOS | 16.4 | **10.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [xNeat.com](https://appshunter.io/developer/327498295) | [Steve Richardson](https://appshunter.io/developer/1066749680) |

## 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


### TriSolver

[App page](https://appshunter.io/ios/app/trisolver-triangle-solver/id1066749681)

This free utility app helps users solve triangle-related problems for both right-angled and regular triangles. It also offers solutions for 20 other geometric shapes, making it a versatile tool for calculations.

**Highlights:** Solve right-angled triangles, Solve regular triangles, Calculate 20 other shapes, User-friendly interface, Free to use

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 2D Shapes | $0.99 | one-time |
| 3D Shapes | $0.99 | one-time |
| Remove Ads | $0.99 | one-time |


## Frequently asked questions

### Is Calculator + free?

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

### Is TriSolver free?

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

### Which has better reviews, Calculator + or TriSolver?

Calculator + is rated higher. Calculator + averages 4.6 out of 5 from 10K ratings, while TriSolver averages 1.0 from 1 ratings.

### Do Calculator + or TriSolver have ads?

Calculator + shows ads; TriSolver does not.

### Which is updated more often, Calculator + or TriSolver?

Calculator + ships an update every 5 days, and TriSolver every 3 months. Most recently, Calculator + was updated on October 6, 2026 and TriSolver on September 21, 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.*