# SolarCalc PV Pro+ vs Grid Zero

The clearest difference is in-app purchases: Grid Zero at none against SolarCalc PV Pro+'s 3. Grid Zero also leads on update cadence (weekly vs every 5 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. SolarCalc PV Pro+ sells 3 in-app purchases, starting at $1.99 per month. Grid Zero asks for nothing beyond the download.

SolarCalc PV Pro+ ships an update every 5 months, Grid Zero weekly. The most recent releases landed on October 20, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | SolarCalc PV Pro+ | Grid Zero |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Weekly** |
| Size | 24 MB | 55 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Muhammed Celik](https://appshunter.io/developer/1885092121) | [Gridzero](https://appshunter.io/developer/1896484252) |

## 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 |


### Grid Zero

[App page](https://appshunter.io/ios/app/grid-zero/id6767530347)

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

**In-app purchases:** none


## Frequently asked questions

### Is SolarCalc PV Pro+ free?

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

### Is Grid Zero free?

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

### Do SolarCalc PV Pro+ or Grid Zero have ads?

Neither SolarCalc PV Pro+ nor Grid Zero shows ads.

### Which is updated more often, SolarCalc PV Pro+ or Grid Zero?

SolarCalc PV Pro+ ships an update every 5 months, and Grid Zero weekly. Most recently, SolarCalc PV Pro+ was updated on October 20, 2026 and Grid Zero on October 10, 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.*