# Kelvy vs ShutterKit

The clearest difference is in-app purchases: ShutterKit at none against Kelvy's 2. ShutterKit also leads on update cadence (every 2 days vs every 11 days) and iOS requirement (15.1 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. ShutterKit asks for nothing beyond the download.

Kelvy ships an update every 11 days, ShutterKit every 2 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Kelvy | ShutterKit |
| --- | --- | --- |
| 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 | **Every 2 days** |
| Monetization | Freemium | — |
| Size | 17 MB | 43 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Michael Cerdeiros](https://appshunter.io/developer/1886053777) | [SHIRIN CHAWLA](https://appshunter.io/developer/1623472221) |

## 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 |


### ShutterKit

[App page](https://appshunter.io/ios/app/shutterkit/id6773492932)

**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 ShutterKit free?

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

### Do Kelvy or ShutterKit have ads?

Neither Kelvy nor ShutterKit shows ads.

### Which is updated more often, Kelvy or ShutterKit?

Kelvy ships an update every 11 days, and ShutterKit every 2 days. Most recently, Kelvy was updated on October 24, 2026 and ShutterKit on October 25, 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.*