# PV Master vs Solar Calibrator

The clearest difference is review sentiment: Solar Calibrator at 100% against PV Master's 17%. Solar Calibrator also leads on rating (5.0 vs 4.3) and in-app purchases (none vs 4). PV Master's advantage is price (Free vs $9.99) and update cadence (every 8 days vs every 11 months). On ads and device support there is nothing between them.

PV Master is free to download; Solar Calibrator costs $9.99 up front. PV Master sells 4 in-app purchases, starting at $4.99 per month. Solar Calibrator asks for nothing beyond the download.

Solar Calibrator holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: PV Master has 23 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 17% of PV Master's written reviews are positive against 100% of Solar Calibrator's.

PV Master ships an update every 8 days, Solar Calibrator every 11 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | PV Master | Solar Calibrator |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | [4.3 (23 ratings)](https://appshunter.io/ios/app/pv-master-solar-panel-system/id396636193/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/solar-calibrator-pv-installer/id1636630984/reviews)** |
| Number of ratings | **23** | 2 |
| Positive reviews | 17.1% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 11 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 25 MB | 39 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) | [Fawzi Fakhro](https://appshunter.io/developer/1636630986) |

## 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 |


### Solar Calibrator

[App page](https://appshunter.io/ios/app/solar-calibrator-pv-installer/id1636630984)

This professional toolkit helps PV installers precisely calibrate panel angles, size battery banks and wire gauges, and generate PDF quotes. It includes tools for obstruction analysis and load auditing, all accessible offline.

**Highlights:** Solar compass and tilt angle calibration, Battery and inverter sizing, Wire gauge calculation, Load audit and quote builder, PV array and string sizing, Obstruction analysis, Offline functionality

**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 Solar Calibrator free?

Solar Calibrator costs $9.99, with no in-app purchases.

### Which has better reviews, PV Master or Solar Calibrator?

Solar Calibrator is rated higher. PV Master averages 4.3 out of 5 from 23 ratings, while Solar Calibrator averages 5.0 from 2 ratings.

### Do PV Master or Solar Calibrator have ads?

Neither PV Master nor Solar Calibrator shows ads.

### Which is updated more often, PV Master or Solar Calibrator?

PV Master ships an update every 8 days, and Solar Calibrator every 11 months. Most recently, PV Master was updated on November 1, 2026 and Solar Calibrator on November 3, 2026.

---

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