# Solar Calibrator vs PACEEX BMS

The clearest difference is review sentiment: Solar Calibrator at 100% against PACEEX BMS's 31%. Solar Calibrator also leads on rating (5.0 vs 2.1). PACEEX BMS's advantage is price (Free vs $9.99) and update cadence (every 5 weeks vs every 11 months). On ads, in-app purchases and device support there is nothing between them.

PACEEX BMS is free to download; Solar Calibrator costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Solar Calibrator holds the better App Store score, 5.0 against 2.1. Both are backed by a comparable volume of ratings — 2 and 8 respectively. Written reviews point the same way: 100% of Solar Calibrator's written reviews are positive against 31% of PACEEX BMS's.

Solar Calibrator ships an update every 11 months, PACEEX BMS every 5 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | Solar Calibrator | PACEEX BMS |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/solar-calibrator-pv-installer/id1636630984/reviews)** | [2.1 (8 ratings)](https://appshunter.io/ios/app/paceex-bms/id6461723294/reviews) |
| Number of ratings | 2 | **8** |
| Positive reviews | **100.0% of reviews** | 31.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 5 weeks** |
| Monetization | Paid | **Free** |
| Size | 39 MB | 40 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Fawzi Fakhro](https://appshunter.io/developer/1636630986) | [SHENZHEN PACE ELECTRONICS CO., LTD.](https://appshunter.io/developer/1616618327) |

## What reviewers say

### Solar Calibrator

[App page](https://appshunter.io/ios/app/solar-calibrator-pv-installer/id1636630984)

This professional toolkit helps PV installers precisely calibrate panel angles, size battery banks and wire gauges, and generate PDF quotes. It includes tools for obstruction analysis and load auditing, all accessible offline.

**Highlights:** Solar compass and tilt angle calibration, Battery and inverter sizing, Wire gauge calculation, Load audit and quote builder, PV array and string sizing, Obstruction analysis, Offline functionality

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

**In-app purchases:** none


### 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 Solar Calibrator free?

Solar Calibrator costs $9.99, with no in-app purchases.

### Is PACEEX BMS free?

PACEEX BMS is free to download, with no in-app purchases.

### Which has better reviews, Solar Calibrator or PACEEX BMS?

Solar Calibrator is rated higher. Solar Calibrator averages 5.0 out of 5 from 2 ratings, while PACEEX BMS averages 2.1 from 8 ratings.

### Do Solar Calibrator or PACEEX BMS have ads?

Neither Solar Calibrator nor PACEEX BMS shows ads.

### Which is updated more often, Solar Calibrator or PACEEX BMS?

Solar Calibrator ships an update every 11 months, and PACEEX BMS every 5 weeks. Most recently, Solar Calibrator was updated on November 3, 2026 and PACEEX BMS on November 3, 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.*