Comparison

RPN vs SmartCalc Easy

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

Head to head

RPN

Simple RPN Calculator

Minimalist Calc: Precise Edit

Free

🔧 Utilities

No ratingsView app →

About

RPN

This utility app functions as a reverse Polish notation calculator. Users input numbers and operations using a stack-based interface to perform calculations. It's designed for straightforward mathematical tasks.

Highlights

Reverse Polish Notation (RPN) input
Stack-based operation
Intuitive digit and operation buttons
Clear result display

Features

Read full description

Simple reverse polish notation calculator. To make an operation you tap the number using the digit buttons. When you want to insert the number into the stack you press the orange button "Enter". When you're done inserting the numbers just tap the operation to do it. The result will be displayed but not put again into stack. Example: 6+7 is 6 enter, 7 enter +

About

SmartCalc Easy

Features

Read full description

SmartCalc - Minimalist Calculator with Precision Editing. - Premium User Experience: Enjoy a seamless experience with eye-friendly color palettes and subtle haptic feedback. - Smart History & Ans: View your entire calculation history at a glance and easily reuse previous results (Ans). - Effortless Editing: Made a mistake? Move the cursor to any part of your formula and fix it instantly—no need to start over. - Universal Compatibility: Experience a perfectly optimized layout for both iPhone and iPad environments.

Screenshots

RPN3 screens

SmartCalc Easy4 screens

Verdict

The call

The clearest difference is in-app purchases: SmartCalc Easy at none against RPN's 1. RPN's advantage is ads (none vs shown). On price, update cadence, 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. RPN sells 1 one-off in-app purchase. SmartCalc Easy asks for nothing beyond the download.

UpkeepUpdate frequency

RPN ships an update monthly, SmartCalc Easy every 3 weeks. The most recent releases landed on October 19, 2026 and October 28, 2026 respectively.

Scorecard2 real differences · 6 level

RPN versus SmartCalc Easy: the parameters behind the verdict, then further details
Parameter	RPN	SmartCalc Easy
Price	Free	Free
Positive reviews	0.0% of reviews	—
Update frequency	Monthly	Every 3 weeks — better
Ads	No — better	Yes
In-app purchases	Yes	No — better
Monetization	Free	—
Devices	iPhone	iPhone, iPad — better
Requires iOS	16.6 — better	17.0
Further details — not scored
Size	5 MB	5 MB
Age rating	4+	4+
Developer	Tomas Stankiewicz Baldassarri	Younghan Kim

In-app purchases

1 purchases

RPN

One-time1

Stack LCD$0.49

None

SmartCalc Easy

No in-app purchases

Questions

Is RPN free?

RPN is free to download, with in-app purchases available.

Is SmartCalc Easy free?

SmartCalc Easy is free to download, with no in-app purchases.

Do RPN or SmartCalc Easy have ads?

SmartCalc Easy shows ads; RPN does not.

Which is updated more often, RPN or SmartCalc Easy?

RPN ships an update monthly, and SmartCalc Easy every 3 weeks. Most recently, RPN was updated on October 19, 2026 and SmartCalc Easy on October 28, 2026.