SwiftRPN vs Fraction Flow
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SwiftRPN
This utility app provides a powerful Reverse Polish Notation (RPN) calculator with advanced features. It supports scalar types, vectors, and matrices, along with extensive built-in operators and unit conversions. Easily switch between number bases and visualize results.
- RPN stack for efficient calculations
- Support for scalar, vector, and matrix types
- 84 built-in operators with documentation
- 74 built-in units for conversion
- Multiple number base input and output (binary, octal, decimal, hex)
- BigInt support for integer calculations
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SwiftRPN is an RPN (Reverse Polish Notation) calculator that aims to be quick to open and easy to use. = RPN Stack Work quickly and efficiently using the RPN Stack by pushing and popping values. The stack will always show what series of inputs led to each output, so you won't lose context during complicated expressions. = Extended Types SwiftRPN can understand scalar types like integers and real numbers, as well as vectors and square matrices of sizes 2, 3, and 4. When operating purely in the scalar integer domain, SwiftRPN can promote up to BigInts to avoid floating point imprecision. = Operators SwiftRPN has 84 built-in operators with included documentation and examples. All the expected operators (basic arithmetic, exponents, logarithms) are present, as are: - Rounding functions (floor/ceil/trunc/round) - Unit conversions - Bitwise operations (and/or/not/xor/shift left/shift right) - Statistics (avg/min/max/sum/std dev/NPV) - Trigonometry (sin/cos/tan + arc/hyperbolic variants) - Vector operations (dot/cross/normalize/length/swizzle) - Matrix operations (identity/inverse/transpose + translation/scale/rotation matrix generators) = Unit Conversions SwiftRPN has 74 built-in units, and can convert between units within families, including: - Angle - Area - Colors (3 and 4 components) - Coordinate systems (2D and 3D) - Length - Mass - Storage (Base 10 [SI, 1000 bytes in a kb] and Base 2 [1024 bytes in a kb]) - Temperature - Time - Volume = Value Representation SwiftRPN recognizes values represented in binary, octal, decimal, and hexidecimal. You can: - Enter values in one representation, and convert them to another - See the result of bitwise operations in binary automatically - View vec3 and vec4 components (truncated) in hexidecimal when working with colors.
Fraction Flow
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Fraction Flow – The Ultimate Fraction Calculator! Simplify Your Fraction Calculations Instantly! Are you tired of struggling with fractions? Fraction Flow makes it easy to add, subtract, multiply, and divide fractions effortlessly! Whether you're working on construction projects, school assignments, or daily calculations, our powerful tool provides accurate results in seconds. Key Features: Fast & Accurate Calculations – Solve fraction problems with ease Workplace-Ready – Ideal for professionals, students, and DIYers No Internet Required – Use it anytime, anywhere User-Friendly Interface – Clean and simple design for easy navigation Optimized for All Devices – Works perfectly on phones & tablets Why struggle with fractions? Get Fraction Flow today and simplify your calculations like a pro! Download now and take control of fractions with ease!
Screenshots
Verdict
The clearest difference is update cadence: Fraction Flow at every 4 days against SwiftRPN's every 14 months. Fraction Flow also leads on iOS requirement (12.0 vs 17.6). On price, ads, 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. Neither carries in-app purchases, so what you see is what you pay.
SwiftRPN ships an update every 14 months, Fraction Flow every 4 days. The most recent releases landed on November 7, 2026 and November 8, 2026 respectively.
| Parameter | SwiftRPN | Fraction Flow |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 14 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | Patrick Gelvin | John Colani |
In-app purchases
SwiftRPN
No in-app purchases
Fraction Flow
No in-app purchases









