PV Optimizer & Solar compass vs EG4 Connect
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PV Optimizer & Solar compass
Maximize your solar panel output with this tool. It guides you to adjust your panels' azimuth and tilt based on real-time solar data. The app also provides a solar compass and forecasts your potential monthly energy generation.
- Solar panel output maximization
- Azimuth and tilt adjustment guidance
- Real-time solar compass
- Solar panel output forecast
- Adjustable time frames for optimization
Read full descriptionHide full description
PV Optimizer & Solar compass is a tool intended to maximise the output of your solar panels. To use the optimiser you only need to choose between one of the 4 time frames available (if you pretend to adjust your panels for the moment, every 3 months, 6 months or yearly), place your device above your panels, and adjust its azimuth and tilt according with the values given by the app. PV optimizer's algorithm will make sure you get the most from your panels and don't waste any opportunity to increase your output. This app also comes with a solar compass which you might find useful for optimizing your panels or for other activities, with plenty of real time data regarding solar position and radiation. In version 2.0 we are proud to present you a forecast for your solar panels output. Just input your panel capacity, tilt and azimuth angles, and you'll get a forecast for the monthly energy you might generate in theory. All the functionalities of this app are completely free.
EG4 Connect
Monitor the status, running data, and events of your solar and energy storage systems. This application provides real-time insights into your energy infrastructure.
- Monitor system status
- View running data
- Track events
- Energy storage system insights
- Solar system monitoring
Read full descriptionHide full description
EG4Connect is the ultimate, easy‑to‑use monitoring and management app for EG4's Energy Storage Systems, including the FlexBOSS, 18kPV, 12000XP, GridBOSS, and more. Built with simplicity at its core, EG4Connect makes it effortless to set up, view, and manage your solar power system! Key Features Fast, Simple Commissioning - Set up newly installed EG4 systems in just a few steps with clear, guided workflows. Real‑Time System Monitoring - Instantly see your solar production, power flow, and system status through clean, intuitive dashboards. Simple Device Management - Easily adjust settings and manage your EG4 devices with straightforward controls designed for anyone to use. Grid Service Controls - Manage & monetize your EG4 equipment through EG4 Grid services - all while never leaving the app. EG4Connect removes complexity so you can focus on what matters most: keeping your energy system running smoothly with confidence and ease.
Screenshots
Verdict
The clearest difference is rating: PV Optimizer & Solar compass at 4.5 against EG4 Connect's 2.8. PV Optimizer & Solar compass also leads on review sentiment (54% vs 35%) and ratings volume (250 vs 24). EG4 Connect's advantage is in-app purchases (none vs 1). On price, update cadence, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. PV Optimizer & Solar compass sells 1 one-off in-app purchase. EG4 Connect asks for nothing beyond the download.
PV Optimizer & Solar compass holds the better App Store score, 4.5 against 2.8. That said, the two scores are not equally well evidenced: PV Optimizer & Solar compass has 250 ratings behind it against 24, so its average is the more settled of the two. Written reviews point the same way: 54% of PV Optimizer & Solar compass's written reviews are positive against 35% of EG4 Connect's.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 1, 2026 and November 5, 2026 respectively.
| Parameter | PV Optimizer & Solar compass | EG4 Connect |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (250 ratings) — better | 2.8 (24 ratings) |
| Positive reviews | 53.6% of reviews — better | 35.3% of reviews |
| Number of ratings | 250 — better | 24 |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.1 — better | 15.0 |
| Further details — not scored | ||
| Size | 5 MB | 38 MB |
| Age rating | 4+ | 4+ |
| Developer | Joao Caetano | EG4 Electronics |
Customer experience
PV Optimizer & Solar compass
EG4 Connect
Bugs and requests
PV Optimizer & Solar compass
Reported bugs
9 issues- Guide feature doesn't show on opening page
- Pop-up ads do not close
- Error: iPhone gyroscope off
- Error: Downloading relevant data
- Graph scale breaks down for yearly output
Show 4 moreShow fewer
- Over 7MWH graph shows 1s and 0s
- Crashes on iOS 8.4
- Crashes instantly after opening
- Crashes a few seconds after startup
Requested features
7 requests- More guidance and clarity
- Option for shorter time periods (day/week)
- Adjustment for time settings (night alignment)
- Loss calculation for incorrect orientation
- Option to reverse phone orientation
Show 2 moreShow fewer
- Ability to get azimuth/tilt for arbitrary date/time
- Setting for inverter clipping
EG4 Connect
Not enough reviews yet to summarise bugs or requests.
In-app purchases
PV Optimizer & Solar compass
- Remove ads$0.99
EG4 Connect
No in-app purchases
Questions
Is PV Optimizer & Solar compass free?
Is EG4 Connect free?
Which has better reviews, PV Optimizer & Solar compass or EG4 Connect?
Do PV Optimizer & Solar compass or EG4 Connect have ads?
Which is updated more often, PV Optimizer & Solar compass or EG4 Connect?
Other comparisons















