# PVCalc vs Sunplot

The clearest difference is in-app purchases: PVCalc at none against Sunplot's 1. PVCalc also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.0). Sunplot's advantage is update cadence (every 10 days vs every 7 months). On price and ads there is nothing between them.

Both are free to download. Sunplot sells 1 one-off in-app purchase. PVCalc asks for nothing beyond the download.

PVCalc ships an update every 7 months, Sunplot every 10 days. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | PVCalc | Sunplot |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 10 days** |
| Size | 32 MB | 4 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Lalani Werake](https://appshunter.io/developer/1841336479) | [Olexandr Zhovnir](https://appshunter.io/developer/6801442223) |

## What reviewers say

### PVCalc

[App page](https://appshunter.io/ios/app/pvcalc-solar-panel-calculator/id6761459574)

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

**In-app purchases:** none


### Sunplot

[App page](https://appshunter.io/ios/app/sunplot-sun-hours/id6808525914)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sunplot Full | $5.99 | one-time |


## Frequently asked questions

### Is PVCalc free?

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

### Is Sunplot free?

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

### Do PVCalc or Sunplot have ads?

Neither PVCalc nor Sunplot shows ads.

### Which is updated more often, PVCalc or Sunplot?

PVCalc ships an update every 7 months, and Sunplot every 10 days. Most recently, PVCalc was updated on November 5, 2026 and Sunplot on November 6, 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.*