# Vitamin D Window Widget vs BigDose

The clearest difference is update cadence: BigDose at every 2 days against Vitamin D Window Widget's every 2 weeks. Vitamin D Window Widget's advantage is iOS requirement (18.0 vs 26.0). 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.

Vitamin D Window Widget ships an update every 2 weeks, BigDose every 2 days. The most recent releases landed on October 31, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Vitamin D Window Widget | BigDose |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/vitamin-d-window-widget/id6759223422/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 2 days** |
| Monetization | Free | — |
| Size | 2 MB | 10 MB |
| Requires iOS | **18.0** | 26.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Airhopping, SL](https://appshunter.io/developer/1339572434) | [Grant Perry](https://appshunter.io/developer/1689489185) |

## What reviewers say

### Vitamin D Window Widget

[App page](https://appshunter.io/ios/app/vitamin-d-window-widget/id6759223422)

This app displays the optimal times of day for natural vitamin D production based on your location and the sun's elevation. It offers real-time sun schedules, smart widgets for home screen access, and notifications to help you maximize your sun exposure.

**Highlights:** Real-time sun schedule, Smart widgets, Daily schedule updates, Dynamic Island countdown, Location-based calculations, Offline functionality, Solar-themed design

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

**In-app purchases:** none


### BigDose

[App page](https://appshunter.io/ios/app/bigdose/id6781472633)

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

**In-app purchases:** none


## Frequently asked questions

### Is Vitamin D Window Widget free?

Vitamin D Window Widget is free to download, with no in-app purchases.

### Is BigDose free?

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

### Do Vitamin D Window Widget or BigDose have ads?

Neither Vitamin D Window Widget nor BigDose shows ads.

### Which is updated more often, Vitamin D Window Widget or BigDose?

Vitamin D Window Widget ships an update every 2 weeks, and BigDose every 2 days. Most recently, Vitamin D Window Widget was updated on October 31, 2026 and BigDose on October 16, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*