# Solar Panel Calculator Plus vs Solarark Projects

The clearest difference is price: Solarark Projects at Free against Solar Panel Calculator Plus's $2.99. Solarark Projects also leads on update cadence (fortnightly vs every 47 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Solarark Projects is free to download; Solar Panel Calculator Plus costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Solar Panel Calculator Plus ships an update every 47 months, Solarark Projects fortnightly. The most recent releases landed on October 13, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Solar Panel Calculator Plus | Solarark Projects |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[3.3 (23 ratings)](https://appshunter.io/ios/app/solar-panel-calculator-plus/id1358184660/reviews)** | — |
| Number of ratings | **23** | — |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 47 months | **Fortnightly** |
| Monetization | Paid | — |
| Size | 8 MB | 57 MB |
| Requires iOS | **12.0** | 13.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nitrio](https://appshunter.io/developer/321121189) | [AHASOLAR TECHNOLOGIES LIMITED](https://appshunter.io/developer/1632224285) |

## What reviewers say

### Solar Panel Calculator Plus

[App page](https://appshunter.io/ios/app/solar-panel-calculator-plus/id1358184660)

Calculate custom off-grid solar home power systems. Determine the exact number of solar panels and battery capacity needed for your energy usage. Helps plan system size, inverter requirements, and battery bank specifications.

**Highlights:** Calculate solar panel requirements, Determine battery capacity, Calculate inverter size, Estimate daily energy usage, Plan days of autonomy, Optimize battery life calculations

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

**In-app purchases:** none


### Solarark Projects

[App page](https://appshunter.io/ios/app/solarark-projects/id6471408812)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Solar Panel Calculator Plus free?

Solar Panel Calculator Plus costs $2.99, with no in-app purchases.

### Is Solarark Projects free?

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

### Do Solar Panel Calculator Plus or Solarark Projects have ads?

Neither Solar Panel Calculator Plus nor Solarark Projects shows ads.

### Which is updated more often, Solar Panel Calculator Plus or Solarark Projects?

Solar Panel Calculator Plus ships an update every 47 months, and Solarark Projects fortnightly. Most recently, Solar Panel Calculator Plus was updated on October 13, 2026 and Solarark Projects on October 14, 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.*