# LumaCadence: Light Flicker — Waveforms and lamp records

> Waveforms and lamp records (iPhone/iPad app by 青林 刘.)

- Source: https://appshunter.io/ios/app/lumacadence-light-flicker/id6817631199 (this page in markdown: same URL + `.md`)
- Developer: [青林 刘](https://appshunter.io/developer/1831641473)
- Category: Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 1 MB
- Languages: American English, Chinese (Simplified, China)
- Released: 2026-10-01
- Data updated: 2026-10-05

## What is LumaCadence?

Keep a repeatable record of your indoor lighting.

LumaCadence uses your iPhone rear camera to sample about five seconds of brightness variation. Screen indoor lamps for detectable fluctuations and compare the same lamp at different dimming settings. All features are free, with no ads, in-app purchases or account required.

SEE THE EVIDENCE
Results distinguish detected variation, no significant variation detected in this sample, and an inconclusive measurement. Inspect frame rate, sampling duration, relative modulation depth, exposure, frame loss and scene changes.

FOLLOW THE PROCESS
See a live brightness waveform while framing a light. The report shows sampling, quality checks and periodic signal analysis, with additional waveform and capture details. Cancel a capture at any time.

REVISIT EACH LAMP
Save measurements by room, lamp and brightness setting. Compare records for one lamp, reopen full reports, share a summary or export CSV.

ON-DEVICE PROCESSING
Camera frames are processed locally and are not saved as photos or video. The app does not upload your measurements. You control saving, deletion and sharing.

REQUIREMENTS AND LIMITATIONS
Requires an iPhone rear camera with a supported high-frame-rate format. 240 fps offers fuller sampling; lower frame rates provide limited screening. Aim at a lampshade or a surface lit by one lamp and keep the phone steady. Avoid direct glare and mixed light sources.

Camera sampling cannot reliably cover every flicker frequency. Exposure, dropped frames, rolling shutter and high-frequency PWM aliasing can affect results. A quiet result does not prove that a light is flicker-free. Exact frequency values are not shown before independent calibration. This is not a medical, eye-safety or product certification tool. The current version focuses on indoor lamps and has no dedicated screen measurement mode.

Available in English and Simplified Chinese. The app follows your system or per-app language setting.


## Version history (last 1 release)

### 1.0 — 2026-10-01

No release notes.

## Apps similar to LumaCadence

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Flicker Light Meter](https://appshunter.io/ios/app/flicker-light-meter/id6796898728) | — | Free | Utilities |
| [FlickerCheck: PWM Meter](https://appshunter.io/ios/app/flickercheck-pwm-meter/id6804622251) | — | Free | Utilities |
| [轻羽云笔记-记事本备忘录待办事项](https://appshunter.io/ios/app/id6764479359) | — | Free | Utilities |
| [熊猫资产管家-银行理财记录,年化收益计算,到期赎回提醒](https://appshunter.io/ios/app/id6758666156) | — | Free | Utilities |
| [SmartScrollCapture](https://appshunter.io/ios/app/smartscrollcapture/id6797709112) | 5.0 (1) | $1.99 | Utilities |
| [Flicker Insight: PWM Test](https://appshunter.io/ios/app/flicker-insight-pwm-test/id6794661401) | 5.0 (1) | $0.99 | Utilities |

## More apps by 青林 刘

- [神奇魔术计算器](https://appshunter.io/ios/app/id6759270532)
- [PhotoPort: Photos & NAS](https://appshunter.io/ios/app/photoport-photos-and-nas/id6817409588)
- [IslandCalc: Island Calculator](https://appshunter.io/ios/app/islandcalc-island-calculator/id6818945159)

All apps by 青林 刘: https://appshunter.io/developer/1831641473

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-05.*