# Suntain vs SunSpan

The clearest difference is update cadence: SunSpan at every 2 days against Suntain's every 4 months. Suntain's advantage is iOS requirement (12.0 vs 16.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Suntain ships an update every 4 months, SunSpan every 2 days. The most recent releases landed on October 2, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Suntain | SunSpan |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sunspan/id6761731642/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 days** |
| Monetization | Free | Free |
| Size | 54 MB | 6 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jacques DUMAREST](https://appshunter.io/developer/1748816172) | [Mykhailo Chelnokov](https://appshunter.io/developer/1891136089) |

## What reviewers say

### Suntain

[App page](https://appshunter.io/ios/app/suntain/id6737068522)

Visualize the sun's position and trajectory based on your location and date. Get sunrise and sunset times, including when the sun appears or disappears behind terrain. Access annual data on daylight and sunshine duration.

**Highlights:** Sun position and trajectory visualization, Horizon sunrise and sunset times, Sunrise/sunset behind terrain, Annual sunrise/sunset data, Daylight and sunshine duration, Sunshine duration analysis

**Features:** macOS Compatibility

**In-app purchases:** none


### SunSpan

[App page](https://appshunter.io/ios/app/sunspan/id6761731642)

Visualize an entire year of daylight, sunrise, sunset, and twilight on a single, intuitive chart. Easily inspect daily solar times and phases by tapping or dragging across the visual representation. Offers detailed insights into seasonal changes and astronomical events.

**Highlights:** Full-year daylight chart, Eight-stop twilight gradient, Inspect daily solar times, DST transitions marked, Location picker via map/GPS, Automatic time zone resolution

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

**In-app purchases:** none


## Frequently asked questions

### Is Suntain free?

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

### Is SunSpan free?

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

### Do Suntain or SunSpan have ads?

Neither Suntain nor SunSpan shows ads.

### Which is updated more often, Suntain or SunSpan?

Suntain ships an update every 4 months, and SunSpan every 2 days. Most recently, Suntain was updated on October 2, 2026 and SunSpan 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.*