# SolarGrade vs Sunbase Solar Designer

The clearest difference is update cadence: SolarGrade at fortnightly against Sunbase Solar Designer's every 2 months. SolarGrade also leads on ratings volume (16 vs 1). Sunbase Solar Designer's advantage is iOS requirement (12.0 vs 16). On price, rating, ads and in-app purchases 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 — 5.0 for SolarGrade against 5.0 for Sunbase Solar Designer. That said, the two scores are not equally well evidenced: SolarGrade has 16 ratings behind it against 1, so its average is the more settled of the two.

SolarGrade ships an update fortnightly, Sunbase Solar Designer every 2 months. The most recent releases landed on October 30, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | SolarGrade | Sunbase Solar Designer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (16 ratings)](https://appshunter.io/ios/app/solargrade/id1563166615/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/sunbase-solar-designer/id1632238633/reviews) |
| Number of ratings | **16** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Free | Free |
| Size | 109 MB | 94 MB |
| Requires iOS | 16 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HelioVolta](https://appshunter.io/developer/1720183204) | [Jared Dubin](https://appshunter.io/developer/1336351914) |

## What reviewers say

### SolarGrade

[App page](https://appshunter.io/ios/app/solargrade/id1563166615)

Streamline solar installation and field service with specialized checklists, automated reporting, and issue tracking. This app replaces manual paperwork with georeferenced tagging, photo editing, and project documentation tools.

**Highlights:** Solar-specific checklists, Georeferenced issue tagging, Photo capture and editing, Automated report generation, Offline mode and syncing, Task management and scheduling

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

**In-app purchases:** none


### Sunbase Solar Designer

[App page](https://appshunter.io/ios/app/sunbase-solar-designer/id1632238633)

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.

**Highlights:** 3D solar and roofing design, Roof measurement tools, Obstacle placement (trees), Lidar data integration, Performance simulations, Shading analysis reports

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SolarGrade free?

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

### Is Sunbase Solar Designer free?

Sunbase Solar Designer is free to download, with no in-app purchases.

### Which has better reviews, SolarGrade or Sunbase Solar Designer?

SolarGrade and Sunbase Solar Designer are both rated 5.0 out of 5 on the App Store, from 16 and 1 ratings respectively.

### Do SolarGrade or Sunbase Solar Designer have ads?

Neither SolarGrade nor Sunbase Solar Designer shows ads.

### Which is updated more often, SolarGrade or Sunbase Solar Designer?

SolarGrade ships an update fortnightly, and Sunbase Solar Designer every 2 months. Most recently, SolarGrade was updated on October 30, 2026 and Sunbase Solar Designer on October 6, 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.*