# Site Calc Pro vs CellArc

The clearest difference is price: Site Calc Pro at Free against CellArc's $1.99. Site Calc Pro also leads on update cadence (daily vs every 10 days) and iOS requirement (15.6 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

Site Calc Pro is free to download; CellArc costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Site Calc Pro ships an update daily, CellArc every 10 days. The most recent releases landed on September 20, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Site Calc Pro | CellArc |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Daily** | Every 10 days |
| Size | 85 MB | 62 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Troy Knight](https://appshunter.io/developer/1419339802) | [Robert Corbin](https://appshunter.io/developer/1890247992) |

## What reviewers say

### Site Calc Pro

[App page](https://appshunter.io/ios/app/site-calc-pro/id6767140419)

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

**In-app purchases:** none


### CellArc

[App page](https://appshunter.io/ios/app/cellarc/id6771021156)

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

**In-app purchases:** none


## Frequently asked questions

### Is Site Calc Pro free?

Site Calc Pro is free to download, with no in-app purchases.

### Is CellArc free?

CellArc costs $1.99, with no in-app purchases.

### Do Site Calc Pro or CellArc have ads?

Neither Site Calc Pro nor CellArc shows ads.

### Which is updated more often, Site Calc Pro or CellArc?

Site Calc Pro ships an update daily, and CellArc every 10 days. Most recently, Site Calc Pro was updated on September 20, 2026 and CellArc on September 21, 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.*