Unit Converter ∞ vs |RPN| Scientific Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Unit Converter ∞
This app offers a comprehensive unit conversion experience with a vast database of over 1000 units across 50 categories. It supports mixed units, custom unit creation, and provides a unique, visually appealing interface for all your conversion needs.
- 50+ Categories & 1000+ Units
- Create your own unit
- Mixed-unit Support
- Currency Exchange
- Price Conversion
- Widget Support
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Forget what you know about common Unit Converters. Undoubtedly, Converter ∞ (Infinity) offers unique features & greatly new user experience!!! ◉ Featured: Converter ∞ greatly supports huge Database with 50 available categories and over 1000 units (Include mixed unit such as ft + in, m + cm,...) so Converter ∞ can help you solve almost every conversion problem in your Work, your Study and also your daily life. You can, moreover, add your regular conversion to Favorite Section so that your conversion task would be as fastest as ever! ◉ Perfect Design: Converter ∞ has a shape of arc combined with sci-fi style offering convenient & interesting user experience. ◉ Ultimate Converter: More than a normal Unit Converter, Converter ∞ can help create your self–made conversion units to the converter. It makes your converter become Unlimited !!! ◉ Official Website: Http://iPhoneCalculator.com ◉ Features: ▸ Support Widget ▸ Universal Converter App ▸ 50+ Categories &1000+ Units ▸ Currency(Money) Exchange ¹ ▸ Price Conversion ▸ Luminous Conversion ▸ Retina Display Support ² ▸ Global Favorite Section ▸ Category Favorite Section ▸ Create your own unit ▸ Turn On/Off Units ▸ Turn On/Off Categories ▸ Mixed-unit Support ▸ Fraction(Mixed) Support ▸ Scientific Calculator ▸ Support Widget ▸ Online DB Update ▸ Online Update Currency Rate ³ ▸ Online Tutorial & Documents. ◉ Featured Conversion: ▸ Mixed Unit Conversion: Met - Ft + In. ▸ Fuel Consumption: Km / Lit - Mil / Gal. ▸ Price Conversion: USD / Gal - EUR / Lit. ▸ Luminous Conversion Tool: Convert Among Luminous Flux, Intensity and Apex Angle. ▸ Electrical Conversion Tool: Convert Among Electric Current (A), Power (W), Voltages (V). ¹: Source: Yahoo! Finance (85 Currencies) ²: All iPhone (Incl. 7/7+) / iPad Retina Display ³: Manual & Hourly Auto Update. New Data Base Update available weekly. No Ads & High Performance. ◉ Categories: Length, Area, Volume, Mass, Acceleration Linear, Acceleration Angular, Angle, Calorific Value, Data, Capacitance,Conductance,Conductive, Currency, Data Transfer, Density Common, Electric Field, Energy, Entropy, Force, Fuel Consumption, Heat Capacity, Heat Flux Density, Illumination, Inductance, Linear Charge Density, Luminance, Linear Current Density, Magnetic Flux Density, Moment Inertia, Power, Pressure, Radioactivity, Radiation Absorb Dose (Rate), Resistance, Price, Resistivity, Speed, Surface Tension, Torque, Time, Thermal Conductivity / Resistivity, Thermal Expansion, Typography, Temperature Velocity Angular, Viscosity Dynamic / Kinematic, Volume Flow Rate, Volume Dry.
|RPN| Scientific Calculator
This calculator app uses Reverse Polish Notation for powerful calculations. It offers customizable color schemes, layouts, and online help, designed for flexibility and usability. All features are unlocked with a one-time purchase.
- Reverse Polish Notation (RPN)
- Viewable stack
- Selectable portrait/landscape layouts
- Customizable color schemes
- Online visual help
- No ads or in-app purchases
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|RPN| Scientific Calculator is a calculator which features a variety of color schemes and layouts. It utilizes Reverse Polish Notation, a viewable stack, selectable portrait and landscape layouts, online visual help and many more. The application is meant to be as flexible and powerful as possible, without sacrificing usability. |RPN| does not have ads, and never will, nor does it use in-app purchases. All functionality comes with the purchase. Here is a youtube playlist with some helpful videos: https://www.youtube.com/playlist?list=PLucgGVHO2sKhnnNf1gapHS4Zy7u69VGAs
Screenshots
Verdict
The clearest difference is rating: Unit Converter ∞ at 4.4 against |RPN| Scientific Calculator's 2.3. Unit Converter ∞ also leads on ratings volume (243 vs 3) and review sentiment (76% vs 60%). |RPN| Scientific Calculator's advantage is update cadence (fortnightly vs every 9 months) and price ($0.99 vs $2.99). On 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
Unit Converter ∞ costs $2.99 and |RPN| Scientific Calculator $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Unit Converter ∞ holds the better App Store score, 4.4 against 2.3. That said, the two scores are not equally well evidenced: Unit Converter ∞ has 243 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 76% of Unit Converter ∞'s written reviews are positive against 60% of |RPN| Scientific Calculator's.
Unit Converter ∞ ships an update every 9 months, |RPN| Scientific Calculator fortnightly. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.
| Parameter | Unit Converter ∞ | |RPN| Scientific Calculator |
|---|---|---|
| Price | $2.99 | $0.99 — better |
| Rating | 4.4 (243 ratings) — better | 2.3 (3 ratings) |
| Positive reviews | 75.8% of reviews — better | 60.0% of reviews |
| Number of ratings | 243 — better | 3 |
| Update frequency | Every 9 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 8.0 — better | 16 |
| Further details — not scored | ||
| Size | 19 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Incpt.Mobis | Bradley Smith |
Customer experience
Unit Converter ∞
|RPN| Scientific Calculator
Bugs and requests
Unit Converter ∞
Reported bugs
2 issues- Incorrect unit conversions for some measurements
- Compatibility issues with newer iOS versions
Requested features
4 requests- Add support for more currencies
- Improve search and navigation
- Provide a list-based interface option
- Add a number base converter
|RPN| Scientific Calculator
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Unit Converter ∞
No in-app purchases
|RPN| Scientific Calculator
No in-app purchases
Questions
Is Unit Converter ∞ free?
Is |RPN| Scientific Calculator free?
Which has better reviews, Unit Converter ∞ or |RPN| Scientific Calculator?
Do Unit Converter ∞ or |RPN| Scientific Calculator have ads?
Which is updated more often, Unit Converter ∞ or |RPN| Scientific Calculator?
Other comparisons
