# CameraTimeSync vs KelvinCam

The clearest difference is in-app purchases: CameraTimeSync at none against KelvinCam's 1. KelvinCam's advantage is update cadence (every 4 days vs every 27 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. KelvinCam sells 1 one-off in-app purchase. CameraTimeSync asks for nothing beyond the download.

CameraTimeSync ships an update every 27 months, KelvinCam every 4 days. The most recent releases landed on October 29, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | CameraTimeSync | KelvinCam |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/kelvincam-light-meter/id6772284884/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 27 months | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 4 MB | 9 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Richard Cox](https://appshunter.io/developer/961512750) | [JAMES STINSON RADCLIFF](https://appshunter.io/developer/1890500112) |

## What reviewers say

### CameraTimeSync

[App page](https://appshunter.io/ios/app/cameratimesync/id1145951288)

**Features:** macOS Compatibility

**In-app purchases:** none


### KelvinCam

[App page](https://appshunter.io/ios/app/kelvincam-light-meter/id6772284884)

This app transforms your iPhone into a professional light meter, measuring exposure, color temperature, and tint. It offers specialized modes for photography and videography, with features like live histograms and the ability to save and annotate readings.

**Highlights:** Live light metering, Color temperature & tint measurement, Exposure value (EV) readings, Photo & video modes, Live histogram with clipping indicators, Save and annotate readings, Calibration to reference meters

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| KelvinCam Pro | $9.99 | one-time |


## Frequently asked questions

### Is CameraTimeSync free?

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

### Is KelvinCam free?

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

### Do CameraTimeSync or KelvinCam have ads?

Neither CameraTimeSync nor KelvinCam shows ads.

### Which is updated more often, CameraTimeSync or KelvinCam?

CameraTimeSync ships an update every 27 months, and KelvinCam every 4 days. Most recently, CameraTimeSync was updated on October 29, 2026 and KelvinCam on October 31, 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.*