# PROG_CALC vs VisAudra

The clearest difference is device support: PROG_CALC at 4 against VisAudra's 2. PROG_CALC also leads on iOS requirement (13 vs 15.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

PROG_CALC ships an update every 2 weeks, VisAudra every 3 weeks. The most recent releases landed on July 16, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | PROG_CALC | VisAudra |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/prog-calc/id1640426491/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Free | — |
| Size | 78 MB | 43 MB |
| Requires iOS | **13** | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [嘉欣 胡](https://appshunter.io/developer/1640395440) | [深圳市斯特孚科技有限公司](https://appshunter.io/developer/1714388173) |

## What reviewers say

### PROG_CALC

[App page](https://appshunter.io/ios/app/prog-calc/id1640426491)

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

**In-app purchases:** none


### VisAudra

[App page](https://appshunter.io/ios/app/visaudra/id6766547933)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is PROG_CALC free?

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

### Is VisAudra free?

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

### Do PROG_CALC or VisAudra have ads?

Neither PROG_CALC nor VisAudra shows ads.

### Which is updated more often, PROG_CALC or VisAudra?

PROG_CALC ships an update every 2 weeks, and VisAudra every 3 weeks. Most recently, PROG_CALC was updated on July 16, 2026 and VisAudra on September 23, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*