Power Estimator vs BMS
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Power Estimator
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Power Estimator is the essential tool for planning and monitoring off-grid power systems. Whether you're designing a solar installation, managing an RV setup, or maintaining a remote cabin, this calculator provides accurate battery charge predictions based on your specific configuration. Key Features: β’ Solar Power Optimization - Configure panels with efficiency factors, shading, and real-time weather integration β’ Real Weather Data - NOAA integration provides accurate solar generation based on your location's sunrise, sunset, and cloud cover β’ Battery Management - Track charge levels over time with percentage, watt-hour, and voltage display modes β’ Load Scheduling - Set up primary loads and additional devices with custom time schedules β’ Multi-Source Power - Include generators and other power inputs in your calculations β’ Interactive Charts - Visualize battery levels, solar generation, consumption, and weather conditions β’ Multi-Day Forecasting - Plan ahead with calculations spanning days or weeks β’ Location Flexibility - Use GPS or enter custom locations for weather-accurate results Perfect for solar installers, RV enthusiasts, off-grid homeowners, and anyone planning power-independent systems. Get precise estimates to ensure your batteries never run out when you need them most.
BMS
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BMS-Li is a professional battery management system monitoring app designed for 48V Li-ion battery packs. With Bluetooth connectivity, you can monitor battery status in real time, view detailed parameters, and receive instant alerts. Key Features: β’ Real-time monitoring β Track pack voltage, total current, cell temperatures, SOC, SOH, and remaining capacity at a glance. β’ Comprehensive alarm system β Get instant notifications for over-voltage, under-voltage, over-current, over-temperature, under-temperature, short circuit, and more. β’ Protection status overview β Monitor charging/discharging MOS status, cell balancing, and all protection triggers. β’ Parameter configuration β Read and write BMS parameters including voltage thresholds, current limits, temperature protections, and sleep settings directly from your phone. β’ Multi-language support β English, Chinese, Spanish, and Russian. Designed for use with DFUN BMS hardware products.
Screenshots
Verdict
The clearest difference is iOS requirement: BMS at 13.0 against Power Estimator's 26.0. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Power Estimator | BMS |
|---|---|---|
| Price | Free | Free |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, Vision Pro β better | iPhone, iPod |
| Requires iOS | 26.0 | 13.0 β better |
| Further details β not scored | ||
| Size | 2 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | Arutunian LLC | η ζ΅·δΈεΈη§ζζιε ¬εΈ |
In-app purchases
Power Estimator
No in-app purchases
BMS
No in-app purchases









