Comparison

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.

Head to head
About

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.

Highlights
  • Solar panel output maximization
  • Azimuth and tilt adjustment guidance
  • Real-time solar compass
  • Solar panel output forecast
  • Adjustable time frames for optimization
Features
Read 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.

About

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.

Highlights
  • Monitor system status
  • View running data
  • Track events
  • Energy storage system insights
  • Solar system monitoring
Features
Read 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

PV Optimizer & Solar compass4 screens
EG4 Connect4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. PV Optimizer & Solar compass sells 1 one-off in-app purchase. EG4 Connect asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 1, 2026 and November 5, 2026 respectively.

Scorecard5 real differences · 5 level
PV Optimizer & Solar compass versus EG4 Connect: the parameters behind the verdict, then further details
ParameterPV Optimizer & Solar compassEG4 Connect
PriceFreeFree
Rating4.5 (250 ratings) — better2.8 (24 ratings)
Positive reviews53.6% of reviews — better35.3% of reviews
Number of ratings250 — better24
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.1 — better15.0
Further details — not scored
Size5 MB38 MB
Age rating4+4+
DeveloperJoao CaetanoEG4 Electronics

Customer experience

PV Optimizer & Solar compass

All ratings247 ratings
Positive88.3%
Neutral5.3%
Negative6.5%
Written reviews28 reviews
Positive53.6%
Neutral7.1%
Negative39.3%

EG4 Connect

All ratings21 ratings
Positive47.6%
Neutral4.8%
Negative47.6%
Written reviews17 reviews
Positive35.3%
Neutral11.8%
Negative52.9%

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 more
  • 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 more
  • 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

1 purchases

PV Optimizer & Solar compass

One-time1
  • Remove ads$0.99
None

EG4 Connect

No in-app purchases

Questions

Is PV Optimizer & Solar compass free?
PV Optimizer & Solar compass is free to download, with in-app purchases available.
Is EG4 Connect free?
EG4 Connect is free to download, with no in-app purchases.
Which has better reviews, PV Optimizer & Solar compass or EG4 Connect?
PV Optimizer & Solar compass is rated higher. PV Optimizer & Solar compass averages 4.5 out of 5 from 250 ratings, while EG4 Connect averages 2.8 from 24 ratings.
Do PV Optimizer & Solar compass or EG4 Connect have ads?
Neither PV Optimizer & Solar compass nor EG4 Connect shows ads.
Which is updated more often, PV Optimizer & Solar compass or EG4 Connect?
PV Optimizer & Solar compass ships an update every 2 months, and EG4 Connect every 2 months. Most recently, PV Optimizer & Solar compass was updated on November 1, 2026 and EG4 Connect on November 5, 2026.

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