# Cozie vs Strobe Light

The clearest difference is in-app purchases: Cozie at none against Strobe Light's 2. Strobe Light's advantage is update cadence (weekly vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Strobe Light sells 2 in-app purchases, starting at $3.99 per 7 days. Cozie asks for nothing beyond the download.

Cozie ships an update monthly, Strobe Light weekly. The most recent releases landed on November 3, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Cozie | Strobe Light |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cozie/id1625029501/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Monetization | Free | — |
| Size | 4 MB | 14 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | **iPhone, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Clayton Miller](https://appshunter.io/developer/1601197774) | [Emine Saridogan](https://appshunter.io/developer/6791217143) |

## What reviewers say

### Cozie

[App page](https://appshunter.io/ios/app/cozie/id1625029501)

This app facilitates real-time surveys on the Apple Watch, collecting comfort data tagged with location. It integrates with Apple HealthKit to gather additional health metrics like heart rate and step count. The open-source nature encourages adaptation for research purposes.

**Highlights:** Real-time surveys on Apple Watch, Location-tagged responses, Apple HealthKit integration, Collects heart rate, blood oxygen, steps, Open-source code for research adaptation

**Features:** macOS Compatibility

**In-app purchases:** none


### Strobe Light

[App page](https://appshunter.io/ios/app/strobe-light-lightup/id6804283838)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $3.99 | per 7 days |
| Yearly | $17.99 | per year |


## Frequently asked questions

### Is Cozie free?

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

### Is Strobe Light free?

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

### Do Cozie or Strobe Light have ads?

Neither Cozie nor Strobe Light shows ads.

### Which is updated more often, Cozie or Strobe Light?

Cozie ships an update monthly, and Strobe Light weekly. Most recently, Cozie was updated on November 3, 2026 and Strobe Light on November 6, 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.*