Comparison

PV Optimizer & Solar compass vs PACEEX BMS

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

PACEEX BMS

Monitor and manage your device's battery health remotely or locally. View real-time and historical data, set up custom alerts for critical battery conditions, and manage your connected devices with ease.

Highlights
  • Real-time battery data monitoring
  • Historical data logging and analysis
  • Customizable warning and alarm settings
  • Local Bluetooth and remote Wi-Fi connectivity
  • Device management and sharing
  • Battery health status and diagnostics
Read full description

PACEEX Technology has developed an app specifically for customers, which is convenient for customers to bind their own devices anytime, anywhere, view battery health status, and record, diagnose and warn the real-time status of the battery,It is a good helper for customers in operating and maintaining their devices. 【Parameter settings】 Preset warning values for over-charge, over-discharge , over-current, and over-temperature,When the battery status reaches the preset warning value, the system will send out an alarm signal to remind users to pay attention to the battery's status and performance. 【Real-time data】 Summary data: including battery current, voltage, number of cells, cycle times, SOC, SOH, temperature and other parameters; Cell data: including independent voltage, independent current, cycle times, SOC, SOH, temperature and other parameters of the cell; Voltage temperature: including the number of cells, cell voltage, cell temperature and other parameters; Status data: including protection, indication, control, fault, battery balance, alarm and other status. 【Historical data】 Record the alarm state, protection state, fault occurrence state and development process of the battery history,which can help the users to understand the state and performance of the battery. 【Connection method】 Local control: Through Bluetooth communication, no need to log in with an account, directly search for nearby Bluetooth signals, one-to-one connection, ready to use; Remote control: through WIFI communication,need to register an account to log in, the APP and the device will automatically perform network distribution operations, and bind the account and device. 【My device】 Forgot password: reset password through email; Edit device: Long press the device item, the edit menu will pop up at the bottom, you can modify the device nickname or delete the device; Share device: Long press the device item, the device administrator who first configures the network and binds the account, can generate a QR code for the device for other users to scan the code to add. 【About us】 If you have any suggestions or encounter any problems during the use of the APP, please feel free to contact us at any time through our website: Official website:https://www.paceic.com/

Screenshots

PV Optimizer & Solar compass4 screens
PACEEX BMS4 screens

Verdict

The call

The clearest difference is rating: PV Optimizer & Solar compass at 4.5 against PACEEX BMS's 2.5. PV Optimizer & Solar compass also leads on review sentiment (54% vs 20%) and ratings volume (247 vs 6). PACEEX BMS's advantage is in-app purchases (none vs 1) and iOS requirement (12.0 vs 14.1). 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. PACEEX BMS 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 2.5. That said, the two scores are not equally well evidenced: PV Optimizer & Solar compass has 247 ratings behind it against 6, 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 20% of PACEEX BMS's.

UpkeepUpdate frequency

PV Optimizer & Solar compass ships an update every 2 months, PACEEX BMS every 5 weeks. The most recent releases landed on October 13, 2026 and October 1, 2026 respectively.

Scorecard6 real differences · 4 level
PV Optimizer & Solar compass versus PACEEX BMS: the parameters behind the verdict, then further details
ParameterPV Optimizer & Solar compassPACEEX BMS
PriceFreeFree
Rating4.5 (247 ratings) — better2.5 (6 ratings)
Positive reviews53.6% of reviews — better20.0% of reviews
Number of ratings247 — better6
Update frequencyEvery 2 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS14.112.0 — better
Further details — not scored
Size5 MB51 MB
Age rating4+17+
DeveloperJoao CaetanoSHENZHEN PACE ELECTRONICS CO., LTD.

Customer experience

PV Optimizer & Solar compass

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

PACEEX BMS

All ratings5 ratings
Positive40.0%
Neutral20.0%
Negative40.0%
Written reviews5 reviews
Positive20.0%
Neutral20.0%
Negative60.0%

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

PACEEX BMS

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

PACEEX BMS

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 PACEEX BMS free?
PACEEX BMS is free to download, with no in-app purchases.
Which has better reviews, PV Optimizer & Solar compass or PACEEX BMS?
PV Optimizer & Solar compass is rated higher. PV Optimizer & Solar compass averages 4.5 out of 5 from 247 ratings, while PACEEX BMS averages 2.5 from 6 ratings.
Do PV Optimizer & Solar compass or PACEEX BMS have ads?
Neither PV Optimizer & Solar compass nor PACEEX BMS shows ads.
Which is updated more often, PV Optimizer & Solar compass or PACEEX BMS?
PV Optimizer & Solar compass ships an update every 2 months, and PACEEX BMS every 5 weeks. Most recently, PV Optimizer & Solar compass was updated on October 13, 2026 and PACEEX BMS on October 1, 2026.

Other comparisons