# SolarCalc PV Pro+ vs Voltbox

SolarCalc PV Pro+ and Voltbox are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. SolarCalc PV Pro+ sells 3 in-app purchases, starting at $1.99 per month and Voltbox sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | SolarCalc PV Pro+ | Voltbox |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | — |
| Size | 24 MB | 20 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Muhammed Celik](https://appshunter.io/developer/1885092121) | [GABRIELE CHESI](https://appshunter.io/developer/6793043905) |

## What reviewers say

### SolarCalc PV Pro+

[App page](https://appshunter.io/ios/app/solarcalc-pv-pro-plus/id6763420858)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $1.99 | per month |
| Pro Yearly | $9.99 | per year |
| Pro Lifetime | $9.99 | one-time |


### Voltbox

[App page](https://appshunter.io/ios/app/voltbox-pv-installer-toolkit/id6798591811)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Unlock | $8.99 | one-time |


## Frequently asked questions

### Is SolarCalc PV Pro+ free?

SolarCalc PV Pro+ is free to download, with in-app purchases available.

### Is Voltbox free?

Voltbox is free to download, with in-app purchases available.

### Do SolarCalc PV Pro+ or Voltbox have ads?

Neither SolarCalc PV Pro+ nor Voltbox shows ads.

---

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