Calculator + vs TriSolver
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculator +
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.
- 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
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Award winning calculator app for iPad and iPhone. Designed with simplicity, usability and beauty in mind! FEATURES: - Free basic calculator - Free scientific calculator - Elegant & Intuitive interface - Advanced editing by easily going back and forth - Displays both the equation & the result at the same time - Supports Fraction & Percent - Supports many scientific functions If you are looking for more advanced features you can upgrade to one or more of the following: - Fraction Calculator with feet, inches & cm support! - Solving for x with a polynomial Calculator for solving quadratic & cubic equations 2x³ - 4x² - 22x + 24 = 0 - Linear Equations Solver for solving system of linear equations 2x – y = 9 3x + 4y = –14 - Graphing Calculator to find the local min, max & intersection points y = 2x³ – 4x (x² + y²)³ = -27y²x² - Triangle Calculator - Cone Calculator - Arc Calculator - Circle Calculator - Base Converter ( HEX OCT BIN DEC ) - Multiple themes Enjoy the FREE Scientific calculator on your iPhone & iPad. If you like it, support us by upgrading or giving us a positive review. Thanks :) Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
TriSolver
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.
- Solve right-angled triangles
- Solve regular triangles
- Calculate 20 other shapes
- User-friendly interface
- Free to use
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An extraordinarily user friendly application for your convenience to solve all your triangle related problems for FREE! Solve either right angled triangles or regular triangles by navigating between the tabs! Additionally you have the option to solve 20 other shapes!
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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 5, 2026 and September 21, 2026 respectively.
| Parameter | Calculator + | TriSolver |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (10K ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 84.9% of reviews | — |
| Number of ratings | 10K — better | 1 |
| Update frequency | Every 5 days — better | Every 3 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.4 | 10.0 — better |
| Further details — not scored | ||
| Size | 49 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | xNeat.com | Steve Richardson |
Customer experience
Calculator +
TriSolver
Bugs and requests
Calculator +
Reported bugs
5 issues- 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
5 requests- Add mod function
- Add commas
- Add 1/x function
- Support for Retina Display
- Add number 4 with two lines
TriSolver
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Calculator +
- Scientific Calculator3 Days trial$4.991 Month
- Calculator7 Days trial$39.991 Year
- Linear Calculator$2.99
- Factoring Calculator$2.99
- Handwriting Calculator$2.99
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- Currency Converter$2.99
- Themes Pack$2.99
- Graphing Calculator$3.99
- Fraction Calculator$3.99
- Scientific Calculator$4.99
- Calculator Plus$4.99
- Calculator$16.99
TriSolver
- 2D Shapes$0.99
- 3D Shapes$0.99
- Remove Ads$0.99
Questions
Is Calculator + free?
Is TriSolver free?
Which has better reviews, Calculator + or TriSolver?
Do Calculator + or TriSolver have ads?
Which is updated more often, Calculator + or TriSolver?
Other comparisons
