OpenSolar vs Knockbase
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.
Knockbase
Streamline door-to-door sales efforts with advanced canvassing software. This tool helps boost sales performance by providing efficient outreach capabilities. Requires a Sunbase account for full functionality.
- Advanced canvassing tools
- Sales performance enhancement
- Door-to-door outreach
- Sunbase account integration
- Mobile sales management
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The most advanced door to door canvassing software. Take your sales to the next level. This app requires a Sunbase account
Screenshots
Verdict
OpenSolar and Knockbase both sit at 4.4 stars, but that hides the real split: 86% of Knockbase's written reviews are positive against 45% of OpenSolar's. Knockbase also leads on update cadence (every 2 weeks vs every 6 weeks). On price, rating, ratings volume and ads 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.
On the App Store both sit at effectively the same score — 4.4 for OpenSolar against 4.4 for Knockbase. Both are backed by a comparable volume of ratings — 10 and 16 respectively. Written reviews are what separate them: 45% of OpenSolar's written reviews are positive against 86% of Knockbase's.
OpenSolar ships an update every 6 weeks, Knockbase every 2 weeks. The most recent releases landed on September 5, 2026 and September 10, 2026 respectively.
| Parameter | OpenSolar | Knockbase |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (10 ratings) — better | 4.4 (16 ratings) |
| Positive reviews | 45.5% of reviews | 85.7% of reviews — better |
| Number of ratings | 10 | 16 — better |
| Update frequency | Every 6 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.7 | 15.6 — better |
| Further details — not scored | ||
| Size | 216 MB | 200 MB |
| Age rating | 4+ | 4+ |
| Developer | OpenSolar Pty Ltd | Jared Dubin |
Customer experience
OpenSolar
Knockbase
In-app purchases
OpenSolar
No in-app purchases
Knockbase
No in-app purchases
