Comparison

PROG_CALC vs RPN

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

Head to head
About

PROG_CALC

This app offers a programmable calculator with two distinct modes for daily computing and advanced mathematical functions. It supports system conversions between binary, octal, decimal, and hexadecimal, and allows for variable storage and code sharing.

Highlights
  • Basic and advanced calculation modes
  • Syntax parser
  • Variable storage and editing
  • Binary, octal, decimal, hexadecimal conversion
  • Built-in code examples
  • Code sharing via QR code or file
Read full description

The programming calculator provides two modes of operation. It has built-in basic operation functions, syntax parser, and supports a variety of application scenarios. 【Basic calculation】 Basic mode provides basic calculator functions for daily computing applications. 【Mathematical function】 Built-in rich mathematical functions, easy to implement basic calculations. 【Variable Storage】 Provides variable storage function, can store intermediate calculation results in basic mode, import and export with one key during application, and edit mode provides variable browsing function to easily grasp calculation results. 【System conversion】 Support binary, octal, decimal, hexadecimal conversion to meet the computing needs of different platforms. 【Code Example】 With built-in code writing examples, you can easily learn computing methods and expand application scenarios. 【Code Sharing】 The code can be shared through a QR code or a file, and the application also supports reading files directly, or scanning a QR code, which can be written on a computer and applied on a mobile phone.

About

RPN

Features
Read full description

This is a calculator app using Reversed Polish Notation (RPN) In Portrait mode, this app provides a basic calculator with the four arithmetic disciplines +, -, x, and /. In Landscape mode, 30 extra buttons are available providing most functions found on a scientific calculator. You can do trigonometry, logarithms, roots, probability, and more. RPN is neat because you can do fancy calculations without having to worry about parenthesis. Putting the operator after the operands allow the operator to infer which are its operands without the clarification offered by paranthesis. The built-in help function (?) provides a short description of each function. The settings page allows you to set the number format, number of decimals displayed, decimal separator and more.

Screenshots

PROG_CALC4 screens
RPN4 screens

Verdict

The call

The clearest difference is update cadence: PROG_CALC at every 2 weeks against RPN's every 6 months. PROG_CALC also leads on device support (4 vs 2) and iOS requirement (13 vs 15.6). On price, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

PROG_CALC ships an update every 2 weeks, RPN every 6 months. The most recent releases landed on November 3, 2026 and November 9, 2026 respectively.

Scorecard3 real differences · 7 level
PROG_CALC versus RPN: the parameters behind the verdict, then further details
ParameterPROG_CALCRPN
PriceFreeFree
Rating5.0 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 2 weeks — betterEvery 6 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPod
Requires iOS13 — better15.6
Further details — not scored
Size78 MB1 MB
Age rating4+4+
Developer嘉欣 胡Joachim Seland Graff

In-app purchases

None

PROG_CALC

No in-app purchases

None

RPN

No in-app purchases

Questions

Is PROG_CALC free?
PROG_CALC is free to download, with no in-app purchases.
Is RPN free?
RPN is free to download, with no in-app purchases.
Do PROG_CALC or RPN have ads?
Neither PROG_CALC nor RPN shows ads.
Which is updated more often, PROG_CALC or RPN?
PROG_CALC ships an update every 2 weeks, and RPN every 6 months. Most recently, PROG_CALC was updated on November 3, 2026 and RPN on November 9, 2026.

Other comparisons