Ohms Calc vs SolarWise
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ohms Calc
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Ohms Calc is a simple to use Ohms law calculator. Enter any two known values and press "Calculate" button to solve for the other.
SolarWise
This app helps homeowners plan solar panel installations by providing personalized system recommendations and financial projections. It uses satellite data for accurate energy generation estimates and offers multiple configuration options. Users can track savings, CO₂ offsets, and export professional reports.
- Personalized system recommendations
- Realistic financial projections
- NASA satellite irradiance data
- Multiple configuration options
- Battery storage sizing
- CO₂ offset tracking
- Professional PDF report export
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SolarWise is the smart solar calculator that helps homeowners make confident decisions about solar panels and battery storage. Enter your location, roof details, and energy usage to get personalized system recommendations with realistic financial projections. Real data. Real results. SolarWise uses NASA POWER satellite irradiance data to estimate how much energy your solar panels can generate based on your exact location. No guesswork. No inflated estimates. 5 auto-generated configurations Get five tailored system options, from Budget Saver to Maximum Coverage. Each configuration includes: Panel count Battery sizing Break-even timeline 25-year ROI Overall score Works in 12+ countries Available for users in the United States, United Kingdom, Germany, Australia, France, Spain, Italy, Japan, India, Canada, Netherlands, and Brazil — with localized currency, units, electricity rates, tax incentives, and feed-in tariffs. Key features NASA satellite solar irradiance data for accurate estimates Roof direction, tilt angle, and shading analysis Battery storage sizing with degradation modeling EV charging integration Grid export and feed-in tariff revenue calculations Break-even charts with best, expected, and worst-case scenarios Monthly generation vs. consumption breakdown CO₂ offset tracking Save and compare configurations side by side Professional PDF report export 25-year financial projections with electricity inflation Free features 5 auto-generated configurations NASA sunshine data Basic break-even chart Monthly generation overview SolarWise Pro — $9.99 one-time purchase Unlock advanced tools with a single purchase: Custom configuration builder Best / expected / worst-case scenario analysis EV charging integration Grid export and feed-in tariff analysis Save configurations Print and share PDF reports Side-by-side comparison Ad-free experience One-time purchase. No subscription. Yours forever. Privacy Policy: https://raw.githubusercontent.com/mksoft-ltd/solarwise/refs/heads/main/privacy_policy.md Terms of Use: https://raw.githubusercontent.com/mksoft-ltd/solarwise/refs/heads/main/terms_of_use.md SolarWise provides estimates for informational purposes only and does not constitute financial advice. Always consult a certified solar installer for a professional assessment.
Screenshots
Verdict
The clearest difference is price: SolarWise at Free against Ohms Calc's $0.99. Ohms Calc's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
SolarWise is free to download; Ohms Calc costs $0.99 up front. SolarWise sells 1 one-off in-app purchase. Ohms Calc asks for nothing beyond the download.
| Parameter | Ohms Calc | SolarWise |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | — | 1.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | — | Every 6 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 2 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | CHRISTOPHER GEORGE RUSTAGE | Froggy Eye Ltd |
In-app purchases
Ohms Calc
No in-app purchases
SolarWise
- SolarWise Pro$9.99
Questions
Is Ohms Calc free?
Is SolarWise free?
Do Ohms Calc or SolarWise have ads?
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