Mod Solar vs Grid Zero
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Mod Solar
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Welcome to Mod Solar - Panel Project, featuring our exclusive Solar Smash technologyβthe definitive tool for optimizing solar energy systems before the first panel is even installed. Our app simplifies the complex process of designing rooftop solar arrays by combining advanced geospatial data with intuitive engineering tools to smash through inefficiency and maximize your energy yield. What we do: Solar Mapping & Projects allows users to create high-precision layouts for solar panels directly on digital roof models. By integrating real-time sunlight trajectory and local weather data, the app calculates the exact energy potential of any surface. Key Features: Intelligent Solar Tracking: We analyze the sunβs path throughout the year to identify the "sweet spots" on any roof, ensuring maximum exposure. The "Solar Smash" Advantage: Smash through high utility bills and energy waste. Our Solar Smash algorithm identifies and eliminates design inefficiencies, ensuring your project delivers the highest possible output for your investment. Efficiency Analytics: Get instant calculations on projected energy yield, performance ratios, and potential ROI based on specific panel models and tilt angles. Custom Project Design: Drag, drop, and rotate panels to fit unique architectural constraints while automatically avoiding shaded areas. Automated Reporting: Generate comprehensive PDF proposals for clients, including 3D visualizations, material lists, and estimated carbon savings. Whether you are a professional installer looking to streamline your workflow or a homeowner planning your transition to clean energy, Solar Mapping & Projects provides the data-driven confidence you need to go solar. Empower your roof. Maximize your energy. Build the future.
Grid Zero
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GridZero helps EPC teams go from concept to client-ready solar proposals - faster and with precision. Combining 3D layouts, system optimization, financial analysis, and proposal generation into one continuous workflow. Designed for solar EPC professionals. GridZero is evolving to support the full solar project lifecycle. This app is exclusively available to existing GridZero B2B client organizations. Access is provisioned by GridZero for authorized team members.
Screenshots
Verdict
The clearest difference is in-app purchases: Grid Zero at none against Mod Solar's 2. Grid Zero also leads on iOS requirement (15.1 vs 17.6). On price, update cadence, ads 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. Mod Solar sells 2 in-app purchases, starting at $0.99 per 7 days. Grid Zero asks for nothing beyond the download.
Mod Solar ships an update weekly, Grid Zero every 5 days. The most recent releases landed on September 14, 2026 and September 24, 2026 respectively.
| Parameter | Mod Solar | Grid Zero |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly | Every 5 days β better |
| Ads | No | No |
| In-app purchases | Yes | No β better |
| Devices | iPhone, iPad | iPhone, iPad, iPod β better |
| Requires iOS | 17.6 | 15.1 β better |
| Further details β not scored | ||
| Size | 5 MB | 55 MB |
| Age rating | 4+ | 4+ |
| Developer | Savio Colombo | Gridzero |
In-app purchases
Mod Solar
- Weekly Subscription$0.997 Days
- Monthly Subscription$2.991 Month
Grid Zero
No in-app purchases
Questions
Is Mod Solar free?
Is Grid Zero free?
Do Mod Solar or Grid Zero have ads?
Which is updated more often, Mod Solar or Grid Zero?
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