# Sparklux Go — SDR video at HDR brightness

> SDR video at HDR brightness (iPhone/iPad app by Fumiaki Monma.)

- Source: https://appshunter.io/ios/app/sparklux-go/id6815096233 (this page in markdown: same URL + `.md`)
- Developer: [Fumiaki Monma](https://appshunter.io/developer/1889763546)
- Category: Entertainment, Photo & Video
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 26.0 · 6 MB
- Languages: American English, Bangla, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French (France), German (Germany) and 31 more
- Released: 2026-09-28
- Data updated: 2026-10-03
- User reviews in markdown: https://appshunter.io/ios/app/sparklux-go/id6815096233/reviews.md

## What is Sparklux Go?

Requires an HDR display (iPhone 12 or later, some iPad Pro models). Videos still play on other displays, but SDR to HDR conversion is not available.

Watch SDR video at HDR brightness. Browse the videos on your Mac or NAS by folder on your iPhone or iPad, and get the most out of your display. Motion goes up to 120fps.

- Browse your shared folders
Connect over SMB to Mac File Sharing or a NAS (Synology, QNAP and more) and play straight from the folder. You can also open videos from the Files app, your photo library, or a direct video link (.mp4 / .mov / .m3u8). WebDAV, Jellyfin and DLNA/UPnP servers are supported too.

- SDR to HDR brightness
Uses the extra brightness of your HDR display to make SDR video brighter and more vivid. Presets: Natural, Vivid, "Brighter, as is" and No conversion. A/B compare shows the original side by side.

- Sharper and smoother
Videos smaller than your screen are upscaled to its native resolution. Videos at 30 fps or lower can be smoothed with frame interpolation. Both pause automatically when the device is hot or in Low Power Mode. Up to 120fps on ProMotion displays.

- Subtitles, audio, lists and PiP
Subtitles in the same folder as the video (Movie.srt / Movie.en.srt / .ass) appear automatically, and embedded MKV and MP4 subtitles can be selected. Switch between audio tracks. Folder lists show thumbnails, with sorting, search and favorites. Picture in Picture lets you keep watching while you use other apps (inside the PiP window, HDR highlights are more restrained due to iOS limits).

- Formats
MP4 / MOV / M4V / HLS / MKV. H.264 and HEVC (including 10-bit, HDR10, HLG and Dolby Vision 8.1).

- Please note
- Streaming services such as YouTube cannot be opened (their pages are not video files).
- Shares that require SMB3 encryption are not supported yet.

- Pricing
Free to download. Start a 3-day free trial on first launch; you will never be charged automatically. To keep using it, unlock with a one-time purchase.

No data is collected. All processing happens on your device.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Sparklux Go (one-time) | $3.99 | one-time |
| 3-Day Free Trial | Free | one-time |



## Version history (last 3 releases)

### 1.2 — 2026-10-03

- New look: Continue watching on the home screen and thumbnail grids in folders
- iPad: the home screen now uses the full width
- Recent now keeps up to 100 videos, with Show All
- Clear history: the recent list only, or also playback positions and watched marks
- Bug fixes and improvements

### 1.1 — 2026-09-29

- Connect to WebDAV, Jellyfin and DLNA/UPnP servers
- Folder lists now have thumbnails, sorting, search and favorites
- Subtitles: .srt / .ass files next to the video appear automatically, plus embedded MKV/MP4 subtitles. Switch audio tracks too
- Picture in Picture
- Smoother rotation animation
- Swipe left to delete a server; clearer messages when a connection fails
- Fixed an error that could appear the first time you opened a video from the Files app

### 1.0 — 2026-09-28

No release notes.

## Apps similar to Sparklux Go

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## More apps by Fumiaki Monma

- [Voicloud](https://appshunter.io/ios/app/voicloud/id6761453595)
- [Voicloud Direct](https://appshunter.io/ios/app/voicloud-direct/id6777557205)

All apps by Fumiaki Monma: https://appshunter.io/developer/1889763546

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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 2026-10-03.*