# SolarMeter sun energy planner vs Powerfox Service

The clearest difference is price: Powerfox Service at Free against SolarMeter sun energy planner's $2.99. Powerfox Service also leads on update cadence (every 2 weeks vs every 8 months). SolarMeter sun energy planner's advantage is chart position (#191 vs unranked) and iOS requirement (9.0 vs 12.1). On ads, in-app purchases and device support there is nothing between them.

Powerfox Service is free to download; SolarMeter sun energy planner costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

SolarMeter sun energy planner ships an update every 8 months, Powerfox Service every 2 weeks. The most recent releases landed on November 6, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | SolarMeter sun energy planner | Powerfox Service |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.0 (9 ratings)](https://appshunter.io/ios/app/solarmeter-sun-energy-planner/id1047880363/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 weeks** |
| Monetization | Paid | — |
| Best chart rank | **#191** | — |
| Size | 46 MB | 37 MB |
| Requires iOS | **9.0** | 12.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [VisTech.Projects LLC](https://appshunter.io/developer/620969851) | [Powerfox GmbH](https://appshunter.io/developer/1739602420) |

## What reviewers say

### SolarMeter sun energy planner

[App page](https://appshunter.io/ios/app/solarmeter-sun-energy-planner/id1047880363)

**Currently charting:** #191 Top Paid · Productivity (US App Store)

Calculate, estimate, and visualize solar power and energy output for a specific location using your iPhone or iPad. This tool helps answer questions about sunlight availability, roof area needs, and potential energy bill changes after PV system installation.

**Highlights:** Real-time solar power calculation, Solar power and energy calculation for various periods, Offline statistical solar data, Automatic location search via GPS, Graph/Plot 2D data presentation, Roof tilt angle and area measurement

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

**In-app purchases:** none


### Powerfox Service

[App page](https://appshunter.io/ios/app/powerfox-service/id6480925002)

**In-app purchases:** none


## Frequently asked questions

### Is SolarMeter sun energy planner free?

SolarMeter sun energy planner costs $2.99, with no in-app purchases.

### Is Powerfox Service free?

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

### Do SolarMeter sun energy planner or Powerfox Service have ads?

Neither SolarMeter sun energy planner nor Powerfox Service shows ads.

### Which is updated more often, SolarMeter sun energy planner or Powerfox Service?

SolarMeter sun energy planner ships an update every 8 months, and Powerfox Service every 2 weeks. Most recently, SolarMeter sun energy planner was updated on November 6, 2026 and Powerfox Service on November 8, 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.*