# Wrist Temperature Tracker vs LightKing

Wrist Temperature Tracker and LightKing are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Wrist Temperature Tracker sells 3 in-app purchases, starting at $1.99 per month and LightKing sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Wrist Temperature Tracker | LightKing |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (128 ratings)](https://appshunter.io/ios/app/wrist-temperature-tracker/id6443753237/reviews)** | — |
| Number of ratings | **128** | — |
| Positive reviews | 27.8% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 5 MB | 17 MB |
| Requires iOS | 18.0 | **17.6** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Bernhard Hering](https://appshunter.io/developer/327542085) | [Frank Sloan](https://appshunter.io/developer/1779642102) |

## What reviewers say

### Wrist Temperature Tracker

[App page](https://appshunter.io/ios/app/wrist-temperature-tracker/id6443753237)

Visualize your overnight wrist temperature trends from your Apple Watch. Track historical data, compare cycles, and view insights with customizable widgets. Requires a compatible Apple Watch and Sleep Tracking to be active.

**Highlights:** Nightly reading history (7, 30, 90 days, 1 year), Monthly calendar with relative color coding, Cycle comparison with period start data, Widgets and complications for quick access, Notifications for new readings, Health data diagnostics

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $1.99 | per month |
| Yearly Subscription | $11.99 | per year |
| Unlock Wrist Temperature | $79.99 | one-time |


### LightKing

[App page](https://appshunter.io/ios/app/lightking-time-in-daylight/id6804745477)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LightKing Pro: Monthly | $0.99 | per month |
| LightKing Pro: Founder Annual | $9.99 | per year |


## Frequently asked questions

### Is Wrist Temperature Tracker free?

Wrist Temperature Tracker is free to download, with in-app purchases available.

### Is LightKing free?

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

### Do Wrist Temperature Tracker or LightKing have ads?

Neither Wrist Temperature Tracker nor LightKing shows ads.

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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.*