OpenSolar vs Sunbase Solar Designer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OpenSolar
This free application provides a comprehensive solution for designing and selling solar energy systems. It offers end-to-end functionality for solar professionals.
- End-to-end solar design
- Sales application
- Free to use
- Comprehensive functionality
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OpenSolar is the world's first free, end-to-end, solar design and sales application.
Sunbase Solar Designer
Design 3D solar and roofing layouts with advanced tools. Measure roofs, add obstacles like trees, and generate detailed performance simulations with shading analysis for accurate reports.
- 3D solar and roofing design
- Roof measurement tools
- Obstacle placement (trees)
- Lidar data integration
- Performance simulations
- Shading analysis reports
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Create 3D Solar and Roofing Designs, measure roofs, apply setbacks, draw trees, pull lidar and run performance simulations with shading data to create accurate shading reports.
Screenshots
Verdict
The clearest difference is rating: Sunbase Solar Designer at 5.0 against OpenSolar's 4.4. Sunbase Solar Designer also leads on iOS requirement (12.0 vs 15.7). OpenSolar's advantage is ratings volume (10 vs 1). On price, update cadence, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Sunbase Solar Designer holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: OpenSolar has 10 ratings behind it against 1, so its average is the more settled of the two.
OpenSolar ships an update every 6 weeks, Sunbase Solar Designer every 2 months. The most recent releases landed on October 7, 2026 and October 6, 2026 respectively.
| Parameter | OpenSolar | Sunbase Solar Designer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (10 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 45.5% of reviews | — |
| Number of ratings | 10 — better | 1 |
| Update frequency | Every 6 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.7 | 12.0 — better |
| Further details — not scored | ||
| Size | 216 MB | 94 MB |
| Age rating | 4+ | 4+ |
| Developer | OpenSolar Pty Ltd | Jared Dubin |
Customer experience
OpenSolar
Sunbase Solar Designer
In-app purchases
OpenSolar
No in-app purchases
Sunbase Solar Designer
No in-app purchases
Questions
Is OpenSolar free?
Is Sunbase Solar Designer free?
Which has better reviews, OpenSolar or Sunbase Solar Designer?
Do OpenSolar or Sunbase Solar Designer have ads?
Which is updated more often, OpenSolar or Sunbase Solar Designer?
Other comparisons
