# OpenSolar vs Knockbase

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.

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.

## The numbers

| Metric | OpenSolar | Knockbase |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (10 ratings)](https://appshunter.io/ios/app/opensolar/id1410085935/reviews)** | [4.4 (16 ratings)](https://appshunter.io/ios/app/knockbase/id1662937512/reviews) |
| Number of ratings | 10 | **16** |
| Positive reviews | 45.5% of reviews | **85.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 216 MB | 200 MB |
| Requires iOS | 15.7 | **15.6** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [OpenSolar Pty Ltd](https://appshunter.io/developer/1340033321) | [Jared Dubin](https://appshunter.io/developer/1336351914) |

## What reviewers say

### OpenSolar

[App page](https://appshunter.io/ios/app/opensolar/id1410085935)

This free application provides a comprehensive solution for designing and selling solar energy systems. It offers end-to-end functionality for solar professionals.

**Highlights:** End-to-end solar design, Sales application, Free to use, Comprehensive functionality

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Knockbase

[App page](https://appshunter.io/ios/app/knockbase/id1662937512)

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.

**Highlights:** Advanced canvassing tools, Sales performance enhancement, Door-to-door outreach, Sunbase account integration, Mobile sales management

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OpenSolar free?

OpenSolar is free to download, with no in-app purchases.

### Is Knockbase free?

Knockbase is free to download, with no in-app purchases.

### Which has better reviews, OpenSolar or Knockbase?

OpenSolar is rated higher. OpenSolar averages 4.4 out of 5 from 10 ratings, while Knockbase averages 4.4 from 16 ratings.

### Do OpenSolar or Knockbase have ads?

Neither OpenSolar nor Knockbase shows ads.

### Which is updated more often, OpenSolar or Knockbase?

OpenSolar ships an update every 6 weeks, and Knockbase every 2 weeks. Most recently, OpenSolar was updated on September 5, 2026 and Knockbase on September 10, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*