Calculator + vs Prime Factorization
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/
Prime Factorization
This utility app breaks down integers into their prime factors. It also calculates the number and sum of divisors, lists all divisors, and identifies specific number types like prime, perfect, abundant, or deficient.
- Prime factorization of integers
- Calculate number of divisors
- Sum of divisors calculation
- List all divisors
- Identify prime numbers
- Identify perfect, abundant, deficient numbers
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This app factorize inputted integer to primes. You can input and factorize any integers under 100 million. App will show below result. * The result of prime factorization * The number of divisors * The sum total of divisors * All Divisors In addition, you can know which inputted number is "Prime number", "Perfect Number", "Multipru Perfect Number", "Abundant Number"or "Dificient Number".
Screenshots
Verdict
The clearest difference is in-app purchases: Prime Factorization at none against Calculator +'s 12. Prime Factorization also leads on ads (none vs shown) and review sentiment (100% vs 85%). Calculator +'s advantage is update cadence (every 5 days vs every 3 months) and ratings volume (10K vs 5). On price 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. Prime Factorization asks for nothing beyond the download.
Calculator + holds the better App Store score, 4.6 against 4.4. That said, the two scores are not equally well evidenced: Calculator + has 10K ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 85% of Calculator +'s written reviews are positive against 100% of Prime Factorization's, so the app with the better star average is not the one people write more warmly about.
Calculator + ships an update every 5 days, Prime Factorization every 3 months. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.
| Parameter | Calculator + | Prime Factorization |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (10K ratings) — better | 4.4 (5 ratings) |
| Positive reviews | 84.9% of reviews | 100.0% of reviews — better |
| Number of ratings | 10K — better | 5 |
| Update frequency | Every 5 days — better | Every 3 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.4 | 8.0 — better |
| Further details — not scored | ||
| Size | 49 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Sarah Ragab | Sohei Mori |
Customer experience
Calculator +
Prime Factorization
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
Prime Factorization
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
Prime Factorization
No in-app purchases
Questions
Is Calculator + free?
Is Prime Factorization free?
Which has better reviews, Calculator + or Prime Factorization?
Do Calculator + or Prime Factorization have ads?
Which is updated more often, Calculator + or Prime Factorization?
Other comparisons
