# PV Calculator Lite Version vs Kapitel

The clearest difference is update cadence: Kapitel at every 5 days against PV Calculator Lite Version's every 10 days. PV Calculator Lite Version's advantage is iOS requirement (13.4 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

PV Calculator Lite Version ships an update every 10 days, Kapitel every 5 days. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | PV Calculator Lite Version | Kapitel |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/pv-calculator-lite-version/id6459019012/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 5 days** |
| Monetization | Free | — |
| Size | 38 MB | 73 MB |
| Requires iOS | **13.4** | 18.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Sven Schwertner](https://appshunter.io/developer/1700478261) | [Marc-Aurel Wilzin](https://appshunter.io/developer/1574044892) |

## What reviewers say

### PV Calculator Lite Version

[App page](https://appshunter.io/ios/app/pv-calculator-lite-version/id6459019012)

Estimate the potential of solar energy generation at your location. This tool offers detailed calculations for electricity fed into the grid, purchased electricity, annual savings, and payback time. It features site-specific solar irradiance and hourly resolution for accurate production and storage planning.

**Highlights:** Calculate electricity fed into grid and purchased, Estimate annual savings and payback time, Site-specific solar irradiance data, Hourly resolution for production and storage, Define PV modules, inverters, and load profiles, Automatic optimal orientation determination, Roof area measurement and panel positioning

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

**In-app purchases:** none


### Kapitel

[App page](https://appshunter.io/ios/app/kapitel/id6808688946)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is PV Calculator Lite Version free?

PV Calculator Lite Version is free to download, with no in-app purchases.

### Is Kapitel free?

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

### Do PV Calculator Lite Version or Kapitel have ads?

Neither PV Calculator Lite Version nor Kapitel shows ads.

### Which is updated more often, PV Calculator Lite Version or Kapitel?

PV Calculator Lite Version ships an update every 10 days, and Kapitel every 5 days. Most recently, PV Calculator Lite Version was updated on October 24, 2026 and Kapitel 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.*