# Sunfollower vs Star Exposure Calculator

The clearest difference is price: Star Exposure Calculator at Free against Sunfollower's $2.99. Star Exposure Calculator also leads on update cadence (every 2 weeks vs every 4 months). Sunfollower's advantage is ads (none vs shown) and iOS requirement (10.0 vs 13.0). On in-app purchases and device support there is nothing between them.

Star Exposure Calculator is free to download; Sunfollower costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Sunfollower ships an update every 4 months, Star Exposure Calculator every 2 weeks. The most recent releases landed on October 20, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Sunfollower | Star Exposure Calculator |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.1 (12 ratings)](https://appshunter.io/ios/app/sunfollower/id633423871/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 70.3% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | Paid | — |
| Size | 22 MB | 25 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Evgeny Vostrikov](https://appshunter.io/developer/633423874) | [Dejan Boras](https://appshunter.io/developer/1612985659) |

## What reviewers say

### Sunfollower

[App page](https://appshunter.io/ios/app/sunfollower/id633423871)

Visualize sunrise, sunset, and sun direction for any day and location. Features an interactive AR view to calculate sun positions and provides twilight times, elevation, azimuth, and shadow ratios.

**Highlights:** Sunrise and sunset position tracking, Interactive Augmented Reality view, Civil, nautical, astronomical twilight times, Sun elevation and azimuth, Shadow ratio calculation

**Features:** macOS Compatibility

**In-app purchases:** none


### Star Exposure Calculator

[App page](https://appshunter.io/ios/app/star-exposure-calculator/id6670283794)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sunfollower free?

Sunfollower costs $2.99, with no in-app purchases.

### Is Star Exposure Calculator free?

Star Exposure Calculator is free to download, with no in-app purchases.

### Do Sunfollower or Star Exposure Calculator have ads?

Star Exposure Calculator shows ads; Sunfollower does not.

### Which is updated more often, Sunfollower or Star Exposure Calculator?

Sunfollower ships an update every 4 months, and Star Exposure Calculator every 2 weeks. Most recently, Sunfollower was updated on October 20, 2026 and Star Exposure Calculator on October 9, 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.*