# SunNow vs Sun Day Tracker

The clearest difference is update cadence: SunNow at every 4 days against Sun Day Tracker's monthly. 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.

SunNow ships an update every 4 days, Sun Day Tracker monthly. The most recent releases landed on September 28, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | SunNow | Sun Day Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (26 ratings)](https://appshunter.io/ios/app/sun-day-tracker/id6748545544/reviews)** |
| Number of ratings | — | **26** |
| Positive reviews | — | 83.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Monthly |
| Monetization | — | Free |
| Size | 33 MB | 1 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | **iPhone, Apple Watch** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [siHealth Ltd.](https://appshunter.io/developer/1123107334) | [permissionless tech, llc](https://appshunter.io/developer/1824145893) |

## What reviewers say

### SunNow

[App page](https://appshunter.io/ios/app/sunnow/id6748296421)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### Sun Day Tracker

[App page](https://appshunter.io/ios/app/sun-day-tracker/id6748545544)

Monitor your daily vitamin D absorption from sunlight exposure. This straightforward application helps you keep track of your sun-related vitamin D intake.

**Highlights:** Track daily vitamin D intake, Sunlight exposure monitoring, Simple interface, Daily tracking

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

**In-app purchases:** none


## Frequently asked questions

### Is SunNow free?

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

### Is Sun Day Tracker free?

Sun Day Tracker is free to download, with no in-app purchases.

### Do SunNow or Sun Day Tracker have ads?

Neither SunNow nor Sun Day Tracker shows ads.

### Which is updated more often, SunNow or Sun Day Tracker?

SunNow ships an update every 4 days, and Sun Day Tracker monthly. Most recently, SunNow was updated on September 28, 2026 and Sun Day Tracker on October 8, 2026.

---

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