# Kelvy vs Stop Bath

The clearest difference is in-app purchases: Stop Bath at none against Kelvy's 2. Stop Bath also leads on iOS requirement (16.0 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Kelvy sells 2 in-app purchases, starting at $2.99 per month. Stop Bath asks for nothing beyond the download.

## The numbers

| Metric | Kelvy | Stop Bath |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (8 ratings)](https://appshunter.io/ios/app/kelvy-white-balance-meter/id6763620060/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 11 days | — |
| Monetization | Freemium | — |
| Size | 17 MB | 1 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Michael Cerdeiros](https://appshunter.io/developer/1886053777) | [Yoli Wu](https://appshunter.io/developer/6812967603) |

## What reviewers say

### Kelvy

[App page](https://appshunter.io/ios/app/kelvy-white-balance-meter/id6763620060)

This app transforms your iPhone into a professional tool for measuring light color temperature. It provides real-time Kelvin readings, tint values, and precise white balance settings for your camera, aiding photographers and filmmakers in achieving accurate color. It also offers gel filter recommendations and a history of readings.

**Highlights:** Live Kelvin readout with real-time graph, Recommended camera white balance settings, CTO/CTB gel filter recommendations, Tint measurement for green/magenta shift, Calibration mode with gray card, Reading history with thumbnails

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Yearly | $29.99 | per year |


### Stop Bath

[App page](https://appshunter.io/ios/app/stop-bath-film-dev-timer/id6812967601)

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

**In-app purchases:** none


## Frequently asked questions

### Is Kelvy free?

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

### Is Stop Bath free?

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

### Do Kelvy or Stop Bath have ads?

Neither Kelvy nor Stop Bath 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.*