Comparison

Four Formula Calculator vs PROG_CALC

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

Head to head
About

Four Formula Calculator

Read full description

A free calculator app that allows you to calculate while looking at 4 formulas at the same time. Root calculation is also possible with root(number) such as root(2).

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.

Screenshots

Four Formula Calculator1 screens
PROG_CALC4 screens

Verdict

The call

The clearest difference is ads: PROG_CALC at none against Four Formula Calculator's shown. PROG_CALC also leads on update cadence (every 2 weeks vs every 2 months) and device support (4 vs 2). On price, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

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

Scorecard3 real differences · 7 level
Four Formula Calculator versus PROG_CALC: the parameters behind the verdict, then further details
ParameterFour Formula CalculatorPROG_CALC
PriceFreeFree
Rating—5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsYesNo — better
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPodiPhone, iPad, iPod, Mac — better
Requires iOS12.0 — better13
Further details — not scored
Size4 MB78 MB
Age rating4+4+
DeveloperSHIGETO TAKAGI嘉欣 胡

In-app purchases

None

Four Formula Calculator

No in-app purchases

None

PROG_CALC

No in-app purchases

Questions

Is Four Formula Calculator free?
Four Formula Calculator is free to download, with no in-app purchases.
Is PROG_CALC free?
PROG_CALC is free to download, with no in-app purchases.
Do Four Formula Calculator or PROG_CALC have ads?
Four Formula Calculator shows ads; PROG_CALC does not.
Which is updated more often, Four Formula Calculator or PROG_CALC?
Four Formula Calculator ships an update every 2 months, and PROG_CALC every 2 weeks. Most recently, Four Formula Calculator was updated on November 6, 2026 and PROG_CALC on November 3, 2026.

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