Power Estimator vs Battery Inventory
Price, ratings, monetisation and update history for both apps, side by side ā 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: ⢠Solar Power Optimization - Configure panels with efficiency factors, shading, and real-time weather integration ⢠Real Weather Data - NOAA integration provides accurate solar generation based on your location's sunrise, sunset, and cloud cover ⢠Battery Management - Track charge levels over time with percentage, watt-hour, and voltage display modes ⢠Load Scheduling - Set up primary loads and additional devices with custom time schedules ⢠Multi-Source Power - Include generators and other power inputs in your calculations ⢠Interactive Charts - Visualize battery levels, solar generation, consumption, and weather conditions ⢠Multi-Day Forecasting - Plan ahead with calculations spanning days or weeks ⢠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.
Battery Inventory
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Never wonder if you have enough battery power again. Battery Inventory helps you organize every cordless power tool battery, charger and tool in one place. Instantly see what's charged, what's charging, what's installed, and what's missing. Whether you're a DIY enthusiast, gardener, contractor or workshop owner, you'll always know if you're ready before starting your next job. Everything in one place ⢠Organize all your battery packs ⢠Track charge levels and battery health ⢠Assign batteries to tools ⢠Manage chargers and charging slots ⢠Record purchase dates, notes and photos ⢠Keep your entire battery collection organized Plan your next job with confidence Battery Inventory goes beyond simple inventory. Create a job with the tools you'll use, and Battery Inventory automatically tells you: ⢠Whether you have enough charged batteries ⢠Which batteries need charging ⢠When charging should begin ⢠Which charger to use ⢠Whether every tool will be ready on time No more discovering empty batteries halfway through a project. Smarter charging ⢠Live charging progress ⢠Estimated time until fully charged ⢠Charge completion notifications (Pro) ⢠Quick charge updates using percentages or battery LED indicators Find any battery instantly ⢠Generate QR codes for every battery ⢠Print battery labels ⢠Scan a QR code to instantly open a battery ⢠Pair NFC tags for one-tap identification ⢠Powerful search across your inventory ⢠Organize batteries by brand Know where every battery is Track every battery as: ⢠Available ⢠Installed in a tool ⢠Charging ⢠Borrowed ⢠Missing ⢠Retired Privacy first Battery Inventory was built with privacy in mind. ⢠No account required ⢠Works completely offline ⢠Your data stays on your device ⢠No third-party analytics Battery Inventory Pro Unlock advanced features including: ⢠Unlimited batteries ⢠Unlimited tools ⢠Unlimited chargers ⢠Advanced Job Planning ⢠Charge completion notifications Perfect for DIY enthusiasts, home workshops, contractors, electricians, carpenters, landscapers and anyone managing cordless power tool batteries. Supports batteries and tools from many popular brands, including DeWalt, Makita, Milwaukee, Bosch, Ryobi, Einhell, Parkside, Hilti, Stihl, EGO and more. Organize your cordless tool batteries, manage chargers, print labels, and always know which batteries are ready for work. Stop guessing. Stay organized. Always have enough power for the next job. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Power Estimator at none against Battery Inventory's 2. Battery Inventory's advantage is iOS requirement (17.0 vs 26.0). On price, ads and device support there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. Battery Inventory sells 2 in-app purchases, starting at $2.99 per month. Power Estimator asks for nothing beyond the download.
| Parameter | Power Estimator | Battery Inventory |
|---|---|---|
| Price | Free | Free |
| Update frequency | ā | Every 9 days |
| Ads | No | No |
| In-app purchases | No ā better | Yes |
| Devices | iPhone, iPad, Vision Pro ā better | iPhone, iPad |
| Requires iOS | 26.0 | 17.0 ā better |
| Further details ā not scored | ||
| Size | 2 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Arutunian LLC | Tamas Bereczki |
In-app purchases
Power Estimator
No in-app purchases
Battery Inventory
- Battery Inventory Pro Monthly$2.991 Month
- Battery Inventory Pro Yearly3 Days trial$19.991 Year
Questions
Is Power Estimator free?
Is Battery Inventory free?
Do Power Estimator or Battery Inventory have ads?
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