# Functioning Fitness vs Sun Light

The clearest difference is update cadence: Sun Light at every 8 days against Functioning Fitness's monthly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Functioning Fitness sells 2 in-app purchases, starting at $4.99 per month and Sun Light sells 3 in-app purchases, starting at $24.99 per year. Whichever you choose, the download price is not the number that matters.

Functioning Fitness ships an update monthly, Sun Light every 8 days. The most recent releases landed on October 10, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Functioning Fitness | Sun Light |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (2 ratings)](https://appshunter.io/ios/app/sun-light-daylight-tracker/id6760528131/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 8 days** |
| Monetization | — | Free |
| Size | 73 MB | 6 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Functioning Fitness LLC](https://appshunter.io/developer/1868582363) | [JAMES JAY QUACKENBUSH](https://appshunter.io/developer/1884817957) |

## What reviewers say

### Functioning Fitness

[App page](https://appshunter.io/ios/app/functioning-fitness/id6757731689)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $4.99 | per month |
| Premium Annual | $39.99 | per year |


### Sun Light

[App page](https://appshunter.io/ios/app/sun-light-daylight-tracker/id6760528131)

Track your daily sunlight exposure with this simple app. It uses your Apple Watch data to fill a daily progress ring, track streaks, and show your history. Enjoy a straightforward approach to monitoring your time spent outdoors.

**Highlights:** Daily daylight progress ring, Streak tracking, 7-day history chart, Morning, afternoon, and evening breakdown, Custom daily goal, Sunrise and sunset times, Home and lock screen widgets

**Features:** Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sun Light Pro | $24.99 | per year |
| Tip | $4.99 | one-time |
| Sun Light Pro Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is Functioning Fitness free?

Functioning Fitness is free to download, with in-app purchases available.

### Is Sun Light free?

Sun Light is free to download, with in-app purchases available.

### Do Functioning Fitness or Sun Light have ads?

Neither Functioning Fitness nor Sun Light shows ads.

### Which is updated more often, Functioning Fitness or Sun Light?

Functioning Fitness ships an update monthly, and Sun Light every 8 days. Most recently, Functioning Fitness was updated on October 10, 2026 and Sun Light on October 8, 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.*