# PV Optimizer & Solar compass vs PACEEX BMS

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.

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

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.

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.

## The numbers

| Metric | PV Optimizer & Solar compass | PACEEX BMS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (247 ratings)](https://appshunter.io/ios/app/pv-optimizer-and-solar-compass/id971828374/reviews)** | [2.5 (6 ratings)](https://appshunter.io/ios/app/paceex-bms/id6461723294/reviews) |
| Number of ratings | **247** | 6 |
| Positive reviews | **53.6% of reviews** | 20.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 5 MB | 51 MB |
| Requires iOS | 14.1 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Joao Caetano](https://appshunter.io/developer/828553753) | [SHENZHEN PACE ELECTRONICS CO., LTD.](https://appshunter.io/developer/1616618327) |

## What reviewers say

### PV Optimizer & Solar compass

[App page](https://appshunter.io/ios/app/pv-optimizer-and-solar-compass/id971828374)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $0.99 | one-time |

**What reviewers like**

- 👍 Works well once figured out
- 👍 Simple, reliable, practical
- 👍 Useful for PV panel inclination
- 👍 Great for RV and overland solar
- 👍 Awesome for maximizing solar power

**What reviewers complain about**

- 🐛 No instructions provided
- 🐛 Ads are annoying
- 🐛 Pop-up ads prevent use
- 🐛 Gyroscope not working
- 🐛 PV alignment not working

**Reported bugs**

- 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

**Requested features**

- 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


### PACEEX BMS

[App page](https://appshunter.io/ios/app/paceex-bms/id6461723294)

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

**In-app purchases:** none


## Frequently asked 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.

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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.*