FunctionCalc vs PROG_CALC
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FunctionCalc
This all-in-one utility app helps veterans calculate VA disability benefits, track important dates, and perform everyday calculations. It includes a tip splitter, unit converter, and a powerful calculator with saved formulas.
- VA disability benefit calculator
- Date countdown and elapsed time tracker
- Tip calculator and bill splitting
- Unit and currency converter
- Time math and custom formulas
- Full calculation history
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VA disability calculator, date tracker, tip splitter, unit converter, and powerful everyday calculator in one app. Built for veterans and useful for everyone, this all-in-one toolkit helps you calculate VA disability benefits, track important dates, do time math, split bills, convert units and currency, and save formulas you use again and again. Whether you are planning a new claim, checking a countdown, or solving everyday math faster, everything is in one clean, easy-to-use app. VA Disability Calculator Enter your service-connected ratings and instantly see your combined disability rating using the official VA combined rating method, rounded the way the VA does it. Estimate monthly compensation based on your rating, dependents, marital status, and spouse Aid & Attendance eligibility. Create what-if scenarios by adding, removing, or changing ratings to see how a new claim, rating increase, appeal, or dependent update could affect your monthly pay before you file or submit changes. Date Calculator Track the time to or from any date that matters. Save sobriety milestones, anniversaries, retirement countdowns, due dates, memorial dates, birthdays, and more. See a live breakdown in years, months, days, hours, minutes, and seconds. Tap any unit to view the full span as a single total, including total days or total hours. Calculator Use a full-featured calculator with a clean interface, live results, and full history. See your complete expression as you type and get answers fast. Tip Calculator Calculate tips and split the bill in seconds. Choose your tip, select the number of people, and instantly see accurate per-person totals. Time Math Work with time the way you think. Enter values like 1:45, use them in calculations, and convert between time format and decimals with one tap. Function Calculator Access thousands of conversions and formulas in one place. Convert length, mass, volume, temperature, speed, area, data storage, and more, including live currency exchange rates. Browse built-in formulas or create your own custom formulas and save them for quick access. Why you'll love it: • VA combined rating calculator with estimated monthly compensation • What-if VA disability scenarios for ratings and dependent changes • Date countdowns and elapsed time tracking • Tip calculator and bill splitting • Time-format math • Unit conversions and live currency rates • Custom formulas and quick access favorites • Full calculation history • Clean dark interface • No ads. No subscriptions.
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.
- 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
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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
Verdict
The clearest difference is price: PROG_CALC at Free against FunctionCalc's $0.99. PROG_CALC also leads on device support (4 vs 2) and iOS requirement (13 vs 26.2). FunctionCalc's advantage is ratings volume (13 vs 1). On rating, review sentiment, update cadence and ads 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
PROG_CALC is free to download; FunctionCalc costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for FunctionCalc against 5.0 for PROG_CALC. That said, the two scores are not equally well evidenced: FunctionCalc has 13 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.
FunctionCalc ships an update every 8 days, PROG_CALC every 2 weeks. The most recent releases landed on June 5, 2026 and July 16, 2026 respectively.
| Parameter | FunctionCalc | PROG_CALC |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 5.0 (13 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 13 — better | 1 |
| Update frequency | Every 8 days — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 26.2 | 13 — better |
| Further details — not scored | ||
| Size | 2 MB | 78 MB |
| Age rating | 4+ | 4+ |
| Developer | Lawler Innovations, Inc. | 嘉欣 胡 |
Customer experience
FunctionCalc
PROG_CALC
In-app purchases
FunctionCalc
No in-app purchases
PROG_CALC
No in-app purchases









