# SolarAlign vs Sunio

The clearest difference is rating: SolarAlign at 5.0 against Sunio's 4.4. SolarAlign also leads on iOS requirement (16.0 vs 18). Sunio's advantage is ratings volume (9 vs 1). On price, review sentiment, update cadence 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.

SolarAlign holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Sunio has 9 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

SolarAlign ships an update weekly, Sunio every 5 days. The most recent releases landed on October 14, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | SolarAlign | Sunio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/solaralign/id6448943627/reviews)** | [4.4 (9 ratings)](https://appshunter.io/ios/app/sunio-sun-tracker-3d-shadow/id6753144445/reviews) |
| Number of ratings | 1 | **9** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | **Every 5 days** |
| Monetization | Free | Free |
| Size | 2 MB | 34 MB |
| Requires iOS | **16.0** | 18 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Matteo Altobello](https://appshunter.io/developer/1674006730) | [Daniel Slave](https://appshunter.io/developer/1126366753) |

## What reviewers say

### SolarAlign

[App page](https://appshunter.io/ios/app/solaralign/id6448943627)

Optimize solar panel placement and monitor energy production with this intuitive app. It guides you through setup and provides real-time performance data for multiple panels, helping you maximize energy output and make informed decisions.

**Highlights:** Guided solar panel configuration, Optimize panel position for maximum efficiency, Manage multiple solar panels, Monitor real-time energy production, Track historical energy data, Analyze energy consumption trends, Interactive energy production graphs

**In-app purchases:** none


### Sunio

[App page](https://appshunter.io/ios/app/sunio-sun-tracker-3d-shadow/id6753144445)

Visualize the sun's path and its impact on terrain in 3D. Plan photography, evaluate property sunlight, and optimize solar panel placement with accurate, animated lighting and shadow simulations.

**Highlights:** 3D animated sunlight and shadow simulation, Augmented Reality sun path overlay, Precise golden hour and twilight times, Property sun exposure analysis, Solar panel optimization tools, Interactive time scrubbing

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

**In-app purchases:** none


## Frequently asked questions

### Is SolarAlign free?

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

### Is Sunio free?

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

### Which has better reviews, SolarAlign or Sunio?

SolarAlign is rated higher. SolarAlign averages 5.0 out of 5 from 1 ratings, while Sunio averages 4.4 from 9 ratings.

### Do SolarAlign or Sunio have ads?

Neither SolarAlign nor Sunio shows ads.

### Which is updated more often, SolarAlign or Sunio?

SolarAlign ships an update weekly, and Sunio every 5 days. Most recently, SolarAlign was updated on October 14, 2026 and Sunio on October 11, 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.*