# Sun Position Viewer vs Sunio

The clearest difference is review sentiment: Sunio at 100% against Sun Position Viewer's 0%. Sunio also leads on price (Free vs $0.99) and rating (4.4 vs 1.8). Sun Position Viewer's advantage is chart position (#167 vs unranked) and iOS requirement (10.3 vs 18). On ratings volume, ads, in-app purchases and device support there is nothing between them.

Sunio is free to download; Sun Position Viewer costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Sunio holds the better App Store score, 4.4 against 1.8. Both are backed by a comparable volume of ratings — 5 and 9 respectively. Written reviews point the same way: 0% of Sun Position Viewer's written reviews are positive against 100% of Sunio's.

Sun Position Viewer ships an update every 26 months, Sunio every 5 days. The most recent releases landed on October 14, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Sun Position Viewer | Sunio |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [1.8 (5 ratings)](https://appshunter.io/ios/app/sun-position-viewer/id1146608794/reviews) | **[4.4 (9 ratings)](https://appshunter.io/ios/app/sunio-sun-tracker-3d-shadow/id6753144445/reviews)** |
| Number of ratings | 5 | **9** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 26 months | **Every 5 days** |
| Monetization | Paid | **Free** |
| Best chart rank | **#167** | — |
| Size | 17 MB | 34 MB |
| Requires iOS | **10.3** | 18 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Klaas Kremer](https://appshunter.io/developer/707360390) | [Daniel Slave](https://appshunter.io/developer/1126366753) |

## What reviewers say

### Sun Position Viewer

[App page](https://appshunter.io/ios/app/sun-position-viewer/id1146608794)

**Currently charting:** #167 Top Paid · Weather (US App Store)

Visualize the sun's path and position from your exact location. See sunrise and sunset times, track seasonal changes, and use the sun compass to find the perfect photo opportunities.

**Highlights:** Sun path visualization, Sunrise and sunset times, Adjustable date for seasonal views, Sun compass, Augmented reality view

**Features:** Vision Pro support

**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 Sun Position Viewer free?

Sun Position Viewer costs $0.99, with no in-app purchases.

### Is Sunio free?

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

### Which has better reviews, Sun Position Viewer or Sunio?

Sunio is rated higher. Sun Position Viewer averages 1.8 out of 5 from 5 ratings, while Sunio averages 4.4 from 9 ratings.

### Do Sun Position Viewer or Sunio have ads?

Neither Sun Position Viewer nor Sunio shows ads.

### Which is updated more often, Sun Position Viewer or Sunio?

Sun Position Viewer ships an update every 26 months, and Sunio every 5 days. Most recently, Sun Position Viewer 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.*