# Sunio vs PegelWatch

The clearest difference is update cadence: Sunio at every 5 days against PegelWatch's every 2 months. Sunio also leads on iOS requirement (18 vs 26.2). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Sunio ships an update every 5 days, PegelWatch every 2 months. The most recent releases landed on September 25, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Sunio | PegelWatch |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (9 ratings)](https://appshunter.io/ios/app/sunio-sun-tracker-3d-shadow/id6753144445/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 2 months |
| Monetization | Free | — |
| Size | 34 MB | 8 MB |
| Requires iOS | **18** | 26.2 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Slave](https://appshunter.io/developer/1126366753) | [Felix Schick](https://appshunter.io/developer/1888811055) |

## What reviewers say

### 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


### PegelWatch

[App page](https://appshunter.io/ios/app/pegelwatch/id6761313652)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sunio free?

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

### Is PegelWatch free?

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

### Do Sunio or PegelWatch have ads?

Neither Sunio nor PegelWatch shows ads.

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

Sunio ships an update every 5 days, and PegelWatch every 2 months. Most recently, Sunio was updated on September 25, 2026 and PegelWatch on September 24, 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.*