Best SunStem alternatives: apps like SunStem: Solar Calculator

10+ similar apps compared and reviewed

5.0 avg rating

10 free apps

Updated October 2026

Dmitriy Motorin

SunStem is great, but it's not the only option. Explore 10+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.

Top Alternatives to SunStem

PowerPlanner: Solar & Inverter by Md Shajib Sharir

Panel, Battery, Energy & Costs

Editor's Choice

🔧 Utilities

0.0(0 ratings)

FreeAdsIn-App Purchases

PowerPlanner: Solar & Inverter screenshot 1

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PowerPlanner: Solar & Inverter screenshot 3

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PV-Calc by Lalani Werake

Solar savings calculator

Strong Contender

🔧 Utilities

0.0(0 ratings)

Free

Watt: Solar for Van & RV by Roman Kopaliani

Battery, panels, wire & fuse

Worth Considering

🔧 Utilities

5.0(1 ratings)

FreeIn-App Purchases

This app assists with solar system design for off-grid living and vehicle conversions. It calculates required battery banks, solar panels, controllers, inverters, and wiring sizes based on your appliances and gear. Offers cited sources and brand recommendations for components.

More apps like SunStem

BaseCalc Electric Calculator

NEC Calculator Tools

Free

This app provides electricians with essential calculation tools for job-site field math, including voltage drop, wire sizing, and conduit fill. It offers a comprehensive suite of 18 calculators, saves calculation history, and allows for the creation and export of job worksheets.

18 essential electrical calculatorsNEC-aware calculationsVoltage drop and wire sizing

🔧 Utilities

(1)

free with in-app purchases

Compare with SunStem

EZClone

EZQube Wireless Cloning Tool

XinoTech Battery Calculator

Battery Tools for Pros

Solar & Battery Intelligence

Free

Gain full insight and control over your home's energy system, including solar panels, battery storage, and EV charging. Monitor real-time power flow, optimize battery usage for peak rates, and track financial gains and solar production forecasts.

Real-time power flow visualizationSmart peak optimization for battery exportEV charging monitoring and control

Battery Calculator & Converter

Useful tools for batteries.

Free

This app simplifies battery planning and comparison by calculating runtime, capacity, and energy needs. It converts between various battery metrics and offers tools for project design, troubleshooting, and power exploration.

Calculate battery runtime with Peukert exponentEstimate cranking amps vs temperatureDetermine alternator/charger time to full

by Anhui Huayu Electronic Technology Co., Ltd.

Free

This application connects compatible physical remote controls to your smartphone via Bluetooth. It allows you to select the correct brand and model, then download the necessary control data from a cloud library to set up your remote quickly and easily.

Bluetooth connection for remote setupDownload control data from cloud librarySupport for rare and legacy remote models

by Growing Beyond (Pvt) Ltd