# Compass Map Barometer vs PV Solar Forecast

The clearest difference is in-app purchases: Compass Map Barometer at none against PV Solar Forecast's 4. Compass Map Barometer also leads on rating (4.4 vs 4.0) and review sentiment (38% vs 21%). PV Solar Forecast's advantage is update cadence (every 3 months vs every 7 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. PV Solar Forecast sells 2 in-app purchases, starting at $9.99 per month. Compass Map Barometer asks for nothing beyond the download.

Compass Map Barometer holds the better App Store score, 4.4 against 4.0. Both are backed by a comparable volume of ratings — 130 and 43 respectively. Written reviews point the same way: 38% of Compass Map Barometer's written reviews are positive against 21% of PV Solar Forecast's.

Compass Map Barometer ships an update every 7 months, PV Solar Forecast every 3 months. Both last shipped on September 28, 2026.

## The numbers

| Metric | Compass Map Barometer | PV Solar Forecast |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (130 ratings)](https://appshunter.io/ios/app/compass-map-barometer/id553118179/reviews)** | [4.0 (43 ratings)](https://appshunter.io/ios/app/pv-solar-forecast/id1496274910/reviews) |
| Number of ratings | **130** | 43 |
| Positive reviews | **38.5% of reviews** | 21.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 7 months | **Every 3 months** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 10 MB | 46 MB |
| Requires iOS | 13 | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SHIGETO TAKAGI](https://appshunter.io/developer/519611619) | [Igor Ilijovski](https://appshunter.io/developer/1492982127) |

## What reviewers say

### Compass Map Barometer

[App page](https://appshunter.io/ios/app/compass-map-barometer/id553118179)

This application provides a digital compass to easily identify cardinal directions and any arbitrary direction. It offers the flexibility to switch between magnetic and true north, and includes a map rotation feature. A barometer function is also available on compatible devices.

**Highlights:** Electronic compass, Magnetic and true north modes, Map rotation, Barometer function, Designates cardinal directions

**Features:** Vision Pro support

**In-app purchases:** none


### PV Solar Forecast

[App page](https://appshunter.io/ios/app/pv-solar-forecast/id1496274910)

Predict your solar power generation for up to 360 hours and 15 days ahead. This tool helps you save energy and money by planning appliance usage, EV charging, and understanding your system's output. It also provides detailed weather forecasts and data export options.

**Highlights:** 360-hour solar production forecast, 15-day daily solar production forecast, 12-month monthly generation forecasts, CSV data export, Current power estimation, Global location forecasting, Hourly weather forecast

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock all features | $9.99 | per month |
| Unlock all features | $39.99 | per year |


## Frequently asked questions

### Is Compass Map Barometer free?

Compass Map Barometer is free to download, with no in-app purchases.

### Is PV Solar Forecast free?

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

### Which has better reviews, Compass Map Barometer or PV Solar Forecast?

Compass Map Barometer is rated higher. Compass Map Barometer averages 4.4 out of 5 from 130 ratings, while PV Solar Forecast averages 4.0 from 43 ratings.

### Do Compass Map Barometer or PV Solar Forecast have ads?

Both Compass Map Barometer and PV Solar Forecast show ads.

### Which is updated more often, Compass Map Barometer or PV Solar Forecast?

Compass Map Barometer ships an update every 7 months, and PV Solar Forecast every 3 months. Most recently, Compass Map Barometer was updated on September 28, 2026 and PV Solar Forecast on September 28, 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.*