# Solar Panel Calculator Plus vs leaDCalc

The clearest difference is price: leaDCalc at Free against Solar Panel Calculator Plus's $2.99. leaDCalc also leads on rating (5.0 vs 3.3) and update cadence (every 8 months vs every 47 months). Solar Panel Calculator Plus's advantage is ratings volume (23 vs 1) and iOS requirement (12.0 vs 16.0). On ads, in-app purchases and device support there is nothing between them.

leaDCalc 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.

leaDCalc holds the better App Store score, 5.0 against 3.3. That said, the two scores are not equally well evidenced: Solar Panel Calculator Plus has 23 ratings behind it against 1, so its average is the more settled of the two.

Solar Panel Calculator Plus ships an update every 47 months, leaDCalc every 8 months. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Solar Panel Calculator Plus | leaDCalc |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [3.3 (23 ratings)](https://appshunter.io/ios/app/solar-panel-calculator-plus/id1358184660/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/leadcalc/id1487509498/reviews)** |
| Number of ratings | **23** | 1 |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 47 months | **Every 8 months** |
| Monetization | Paid | **Free** |
| Size | 8 MB | 159 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Nitrio](https://appshunter.io/developer/321121189) | [Vaughn Warriner](https://appshunter.io/developer/1487509497) |

## 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


### leaDCalc

[App page](https://appshunter.io/ios/app/leadcalc/id1487509498)

This app calculates direct current power lead sizes for telephone company central office power plants. It uses a circular slide rule format to determine allowable voltage drops and wire sizes based on specific system parameters.

**Highlights:** Circular slide rule format, Calculates allowable voltage drops, Determines DC power lead sizes, Supports 48V and 24V DC systems, References Bell System calculations

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

**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 leaDCalc free?

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

### Which has better reviews, Solar Panel Calculator Plus or leaDCalc?

leaDCalc is rated higher. Solar Panel Calculator Plus averages 3.3 out of 5 from 23 ratings, while leaDCalc averages 5.0 from 1 ratings.

### Do Solar Panel Calculator Plus or leaDCalc have ads?

Neither Solar Panel Calculator Plus nor leaDCalc shows ads.

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

Solar Panel Calculator Plus ships an update every 47 months, and leaDCalc every 8 months. Most recently, Solar Panel Calculator Plus was updated on October 27, 2026 and leaDCalc on October 24, 2026.

---

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