# Sprk Pro vs Solar Spek

The clearest difference is rating: Solar Spek at 5.0 against Sprk Pro's 4.0. Sprk Pro's advantage is in-app purchases (none vs 6). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Solar Spek sells 6 in-app purchases, starting at $9.99 per month. Sprk Pro asks for nothing beyond the download.

Solar Spek holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 4 and 2 respectively.

Sprk Pro ships an update every 3 weeks, Solar Spek fortnightly. The most recent releases landed on October 24, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Sprk Pro | Solar Spek |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (4 ratings)](https://appshunter.io/ios/app/sprk-pro/id6504923692/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/solar-spek/id6761561453/reviews)** |
| Number of ratings | **4** | 2 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 154 MB | 56 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sprk Realty](https://appshunter.io/developer/1754339833) | [Solar Spek LLC](https://appshunter.io/developer/1862217978) |

## What reviewers say

### Sprk Pro

[App page](https://appshunter.io/ios/app/sprk-pro/id6504923692)

This app helps maximize the value of solar-powered homes by assessing energy efficiency and property value. It provides custom reports on solar performance, longevity, and savings opportunities. Stay informed and protect investments.

**Highlights:** Assess energy efficiency, Understand property value, Discover savings opportunities, Generate custom solar reports, Analyze solar performance, Track solar longevity

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

**In-app purchases:** none


### Solar Spek

[App page](https://appshunter.io/ios/app/solar-spek/id6761561453)

Streamline residential solar inspections with this field tool. It guides users through data and photo capture, with licensed professionals generating detailed client reports.

**Highlights:** Guided data and photo capture, Professional report generation, Expert review by licensed professionals, Simplifies complex solar evaluations, Client-ready inspection documents

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic Monthly | $9.99 | per month |
| Pro Monthly | $19.99 | per month |
| Enterprise Monthly | $69.99 | per month |
| Basic Annual | $115.99 | per year |
| Pro Annual | $219.99 | per year |
| Enterprise Annual | $709.99 | per year |


## Frequently asked questions

### Is Sprk Pro free?

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

### Is Solar Spek free?

Solar Spek is free to download, with in-app purchases available.

### Which has better reviews, Sprk Pro or Solar Spek?

Solar Spek is rated higher. Sprk Pro averages 4.0 out of 5 from 4 ratings, while Solar Spek averages 5.0 from 2 ratings.

### Do Sprk Pro or Solar Spek have ads?

Neither Sprk Pro nor Solar Spek shows ads.

### Which is updated more often, Sprk Pro or Solar Spek?

Sprk Pro ships an update every 3 weeks, and Solar Spek fortnightly. Most recently, Sprk Pro was updated on October 24, 2026 and Solar Spek on October 18, 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.*