# Marine Docker vs SolarCalc PV Pro+

The clearest difference is in-app purchases: Marine Docker at none against SolarCalc PV Pro+'s 3. Marine Docker also leads on iOS requirement (13.4 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

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

Marine Docker ships an update every 4 months, SolarCalc PV Pro+ every 5 months. The most recent releases landed on September 10, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Marine Docker | SolarCalc PV Pro+ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 5 months |
| Size | 61 MB | 24 MB |
| Requires iOS | **13.4** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kontis d.o.o.](https://appshunter.io/developer/1745258669) | [Muhammed Celik](https://appshunter.io/developer/1885092121) |

## What reviewers say

### Marine Docker

[App page](https://appshunter.io/ios/app/marine-docker/id6502378616)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Marine Docker free?

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

### Is SolarCalc PV Pro+ free?

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

### Do Marine Docker or SolarCalc PV Pro+ have ads?

Neither Marine Docker nor SolarCalc PV Pro+ shows ads.

### Which is updated more often, Marine Docker or SolarCalc PV Pro+?

Marine Docker ships an update every 4 months, and SolarCalc PV Pro+ every 5 months. Most recently, Marine Docker was updated on September 10, 2026 and SolarCalc PV Pro+ on October 20, 2026.

---

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