# PV Master vs ONSAT

The clearest difference is in-app purchases: ONSAT at none against PV Master's 4. ONSAT also leads on iOS requirement (15.1 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. PV Master sells 4 in-app purchases, starting at $4.99 per month. ONSAT asks for nothing beyond the download.

PV Master ships an update every 8 days, ONSAT every 2 weeks. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | PV Master | ONSAT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (23 ratings)](https://appshunter.io/ios/app/pv-master-solar-panel-system/id396636193/reviews)** | — |
| Number of ratings | **23** | — |
| Positive reviews | 17.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 2 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 25 MB | 82 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BigBalli Consulting llc](https://appshunter.io/developer/363765325) | [SITALLCOM SISTEMAS INTELIGENTES LTDA](https://appshunter.io/developer/1526495577) |

## What reviewers say

### PV Master

[App page](https://appshunter.io/ios/app/pv-master-solar-panel-system/id396636193)

This app helps you harness solar energy by providing accurate solar data, weather integration, and tools to optimize your solar panel setup. It offers comprehensive calculators for energy needs, panel requirements, and battery storage, along with guides and a glossary for informed decisions.

**Highlights:** Accurate solar data based on location, Weather data integration, Solar potential insights, Panel positioning tool, Comprehensive energy calculators, Guides, FAQs, and glossary

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Unlock | $4.99 | per month |
| Yearly | $49.99 | per year |
| Location Solar Panel Data | $0.99 | one-time |
| Lifetime | $59.99 | one-time |


### ONSAT

[App page](https://appshunter.io/ios/app/onsat/id1538472707)

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

**In-app purchases:** none


## Frequently asked questions

### Is PV Master free?

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

### Is ONSAT free?

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

### Do PV Master or ONSAT have ads?

Neither PV Master nor ONSAT shows ads.

### Which is updated more often, PV Master or ONSAT?

PV Master ships an update every 8 days, and ONSAT every 2 weeks. Most recently, PV Master was updated on November 1, 2026 and ONSAT on November 3, 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.*