# Zinc Counter and Tracker vs Sun Light

The clearest difference is price: Sun Light at Free against Zinc Counter and Tracker's $2.99. Sun Light also leads on update cadence (every 8 days vs every 5 weeks). Zinc Counter and Tracker's advantage is in-app purchases (none vs 3). On ads, device support and iOS requirement there is nothing between them.

Sun Light is free to download; Zinc Counter and Tracker costs $2.99 up front. Sun Light sells 3 in-app purchases, starting at $24.99 per year. Zinc Counter and Tracker asks for nothing beyond the download.

Zinc Counter and Tracker ships an update every 5 weeks, Sun Light every 8 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Zinc Counter and Tracker | Sun Light |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | — | **[4.7 (3 ratings)](https://appshunter.io/ios/app/sun-light-daylight-tracker/id6760528131/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 8 days** |
| Monetization | — | Free |
| Size | 12 MB | 6 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 12+ | 4+ |
| Developer | [First Line Medical Communications Ltd](https://appshunter.io/developer/369607930) | [JAMES JAY QUACKENBUSH](https://appshunter.io/developer/1884817957) |

## What reviewers say

### Zinc Counter and Tracker

[App page](https://appshunter.io/ios/app/zinc-counter-and-tracker/id6550924680)

**In-app purchases:** none


### 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 Zinc Counter and Tracker free?

Zinc Counter and Tracker costs $2.99, with no in-app purchases.

### Is Sun Light free?

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

### Do Zinc Counter and Tracker or Sun Light have ads?

Neither Zinc Counter and Tracker nor Sun Light shows ads.

### Which is updated more often, Zinc Counter and Tracker or Sun Light?

Zinc Counter and Tracker ships an update every 5 weeks, and Sun Light every 8 days. Most recently, Zinc Counter and Tracker was updated on October 25, 2026 and Sun Light on October 24, 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.*