# ShutterFinder vs RingThing

The clearest difference is price: RingThing at Free against ShutterFinder's $2.99. ShutterFinder's advantage is in-app purchases (none vs 1). On update cadence, ads, device support and iOS requirement there is nothing between them.

RingThing is free to download; ShutterFinder costs $2.99 up front. RingThing sells 1 one-off in-app purchase. ShutterFinder asks for nothing beyond the download.

ShutterFinder ships an update every 9 days, RingThing weekly. The most recent releases landed on October 11, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | ShutterFinder | RingThing |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/shutterfinder-flicker-meter/id6760565737/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Weekly** |
| Monetization | Paid | — |
| Size | 2 MB | 28 MB |
| Requires iOS | **17.0** | 18.6 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Nuncha](https://appshunter.io/developer/371879216) | [Damien Bateman](https://appshunter.io/developer/1788161087) |

## What reviewers say

### ShutterFinder

[App page](https://appshunter.io/ios/app/shutterfinder-flicker-meter/id6760565737)

Instantly detect light flicker from various sources and get the precise shutter speed needed to eliminate it. Built for film professionals, this tool uses your iPhone's high-speed camera and advanced analysis for flicker-free shooting.

**Highlights:** Detects flicker frequency with precision, Recommends exact shutter speed or angle, Supports all common shooting frame rates, Works with LED, fluorescent, HMI, and monitors, Uses 240fps slow-motion capture, FFT spectral analysis for accuracy

**In-app purchases:** none


### RingThing

[App page](https://appshunter.io/ios/app/ringthing-focus-ring-maker/id6762446316)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RingThing Pro | $19.99 | one-time |


## Frequently asked questions

### Is ShutterFinder free?

ShutterFinder costs $2.99, with no in-app purchases.

### Is RingThing free?

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

### Do ShutterFinder or RingThing have ads?

Neither ShutterFinder nor RingThing shows ads.

### Which is updated more often, ShutterFinder or RingThing?

ShutterFinder ships an update every 9 days, and RingThing weekly. Most recently, ShutterFinder was updated on October 11, 2026 and RingThing on September 28, 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.*