Comparison

SwiftRPN vs Alpha Translit Keyboard

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

SwiftRPN

Read full description

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.

About

Alpha Translit Keyboard

Features
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Alpha Translit is a keyboard app for typing a wide range of Latin letters and phonetic symbols. Enter accented Latin letters like “Á” and phonetic symbols like “ə” with ease. Alpha Translit is especially useful for romanizing languages written in non-Latin scripts, including Chinese and Arabic. Use it for vocabulary lists, learning materials, language notes, academic writing, and more. Main features: - Add accents and other marks after typing letters, so you can combine them freely across languages and writing systems - Find characters easily with a layout close to a standard keyboard - Check the Key Reference when you cannot find a character - Tell visually similar characters apart with a banner that shows details about the character you entered

Screenshots

SwiftRPN4 screens
Alpha Translit Keyboard4 screens

Verdict

The call

The clearest difference is in-app purchases: SwiftRPN at none against Alpha Translit Keyboard's 2. Alpha Translit Keyboard's advantage is update cadence (every 5 weeks vs every 14 months). On price, ads, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Alpha Translit Keyboard sells 2 one-off in-app purchases. SwiftRPN asks for nothing beyond the download.

UpkeepUpdate frequency

SwiftRPN ships an update every 14 months, Alpha Translit Keyboard every 5 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 6 level
SwiftRPN versus Alpha Translit Keyboard: the parameters behind the verdict, then further details
ParameterSwiftRPNAlpha Translit Keyboard
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 14 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.6 — better18.6
Further details — not scored
Size3 MB18 MB
Age rating4+4+
DeveloperPatrick GelvinAkira Miyazawa

In-app purchases

None

SwiftRPN

No in-app purchases

2 purchases

Alpha Translit Keyboard

One-time2
  • Support$2.99
  • Support+$9.99

Questions

Is SwiftRPN free?
SwiftRPN is free to download, with no in-app purchases.
Is Alpha Translit Keyboard free?
Alpha Translit Keyboard is free to download, with in-app purchases available.
Do SwiftRPN or Alpha Translit Keyboard have ads?
Neither SwiftRPN nor Alpha Translit Keyboard shows ads.
Which is updated more often, SwiftRPN or Alpha Translit Keyboard?
SwiftRPN ships an update every 14 months, and Alpha Translit Keyboard every 5 weeks. Most recently, SwiftRPN was updated on October 24, 2026 and Alpha Translit Keyboard on October 25, 2026.

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