# Zeta Cloud vs PV Calculator.

The clearest difference is in-app purchases: Zeta Cloud at none against PV Calculator.'s 1. Zeta Cloud also leads on update cadence (fortnightly vs every 7 months). PV Calculator.'s advantage is device support (3 vs 1) and iOS requirement (13.0 vs 16.0). On price and ads there is nothing between them.

Both are free to download. PV Calculator. sells 1 one-off in-app purchase. Zeta Cloud asks for nothing beyond the download.

Zeta Cloud ships an update fortnightly, PV Calculator. every 7 months. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Zeta Cloud | PV Calculator. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/pv-calculator/id6758427564/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 7 months |
| Monetization | — | Free with in-app purchases |
| Size | 28 MB | 52 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SINOTECH Company Limited](https://appshunter.io/developer/1831659710) | [Nanjibhai Gorasiya](https://appshunter.io/developer/1834066312) |

## What reviewers say

### Zeta Cloud

[App page](https://appshunter.io/ios/app/zeta-cloud/id6749664684)

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

**In-app purchases:** none


### PV Calculator.

[App page](https://appshunter.io/ios/app/pv-calculator/id6758427564)

This tool simplifies solar photovoltaic system design and analysis for professionals and students. It offers a comprehensive Energy Hub with multiple calculators, providing instant results, visual charts, and clear insights for efficient PV system planning and optimization.

**Highlights:** Energy Hub with multiple solar calculators, Calculate solar panel power output, Analyze energy generation (daily, monthly, yearly), Design solar array size, Calculate system voltage and configuration, Instant calculation results, Visual charts and performance summaries

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime premium | $9.99 | one-time |


## Frequently asked questions

### Is Zeta Cloud free?

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

### Is PV Calculator. free?

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

### Do Zeta Cloud or PV Calculator. have ads?

Neither Zeta Cloud nor PV Calculator. shows ads.

### Which is updated more often, Zeta Cloud or PV Calculator.?

Zeta Cloud ships an update fortnightly, and PV Calculator. every 7 months. Most recently, Zeta Cloud was updated on October 30, 2026 and PV Calculator. on October 31, 2026.

---

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