# Solar Calibrator vs Energy

The clearest difference is price: Energy at Free against Solar Calibrator's $9.99. Energy also leads on update cadence (every 4 weeks vs every 10 months) and ratings volume (13 vs 2). Solar Calibrator's advantage is rating (5.0 vs 4.2) and review sentiment (100% vs 80%). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Energy is free to download; Solar Calibrator costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Solar Calibrator holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Energy has 13 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of Solar Calibrator's written reviews are positive against 80% of Energy's.

Solar Calibrator ships an update every 10 months, Energy every 4 weeks. The most recent releases landed on November 12, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Solar Calibrator | Energy |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/solar-calibrator/id1636630984/reviews)** | [4.2 (13 ratings)](https://appshunter.io/ios/app/energy-mate/id1672569936/reviews) |
| Number of ratings | 2 | **13** |
| Positive reviews | **100.0% of reviews** | 80.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 4 weeks** |
| Monetization | Paid | **Free** |
| Size | 40 MB | 182 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Fawzi Fakhro](https://appshunter.io/developer/1636630986) | [祥梯 孟](https://appshunter.io/developer/1070155084) |

## What reviewers say

### Solar Calibrator

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


### Energy

[App page](https://appshunter.io/ios/app/energy-mate/id1672569936)

Monitor your energy storage devices in real-time with this mobile application. It offers convenient and quick access to status information through clear data visualization and multi-dimensional displays of historical data.

**Highlights:** Real-time device status monitoring, Data visualization with charts, Historical data display, Web access anytime, anywhere, Low internet traffic usage

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Solar Calibrator free?

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

### Is Energy free?

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

### Which has better reviews, Solar Calibrator or Energy?

Solar Calibrator is rated higher. Solar Calibrator averages 5.0 out of 5 from 2 ratings, while Energy averages 4.2 from 13 ratings.

### Do Solar Calibrator or Energy have ads?

Neither Solar Calibrator nor Energy shows ads.

### Which is updated more often, Solar Calibrator or Energy?

Solar Calibrator ships an update every 10 months, and Energy every 4 weeks. Most recently, Solar Calibrator was updated on November 12, 2026 and Energy on November 7, 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.*