Instant HDR vs Glowroom
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Instant HDR
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Instant HDR converts ordinary photos into real HDR JPEGs tuned for Instagram posting. Most HDR photo apps push a stronger effect before upload. But Instagram applies its own HDR processing, which can visibly alter the image after posting. Instant HDR is built around that behavior. Instead of chasing an exaggerated pre-upload preview, Instant HDR is tuned to preserve your photo’s intended look after Instagram upload, while still producing a bold HDR effect once the post goes live. Features: • One-tap HDR conversion • Tuned specifically for Instagram posting • Helps keep your SDR image stable after upload • Local on-device processing • Saves the converted HDR JPEG to your photo library • Optional subscription removes the export watermark Instant HDR is made for creators who want reliable HDR output — not a preview that falls apart after posting. Terms of Use: https://hdrguru.vercel.app/terms Privacy Policy: https://hdrguru.vercel.app/privacy
Glowroom
Transform your SDR photos into true HDR with brilliant highlights and enhanced detail. This app synthesizes HDR gain maps, allowing you to edit and relight images directly on your device. It offers precision editing tools and exports in HDR formats for stunning visuals on compatible displays.
- SDR to HDR conversion
- Synthesized HDR gain maps
- Precision editing tools
- Live histogram
- One-tap Auto correction
- HDR export formats (HEIC, Adaptive HDR JPEG)
- Photos extension for in-app editing
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Shot in SDR? Convert it. Already HDR? Relight it. Glowroom turns any photo into true HDR. It synthesizes a real HDR gain map — the same technology behind iPhone HDR photos — so your images glow with brilliant highlights on HDR displays and still look great everywhere else. Glowroom does both, entirely on your device — free and private, no uploads. FIND YOUR NON-HDR PHOTOS Proprietary feature -- Glowroom scans your entire library to discover every SDR (Standard Dynamic Range) photo. Filter by date or device, omit screenshots, and collect them all into a single album with one tap. Your best candidates for HDR conversion. PRECISION EDITING • Levels correction with a live histogram — drag the black, white, and midtone points like a pro • One-tap Auto that reads the scene and fixes it naturally • Exposure, contrast, highlights, shadows, midtones, saturation, temperature, clarity, dehaze & more BUILT NATIVE for iOS. • Real gain-map export (HEIC & Adaptive HDR JPEG) • Live EDR preview — see the glow as you edit • Save a new copy, or update the original reversibly in the Photos App. • Edit right inside Photos with the Glowroom extension • Crop with social presets (Instagram, TikTok, YouTube, X…) and precise straightening BATCH EDITING. • Coming soon Free with reduced-resolution, watermarked saves. Glowroom Pro unlocks full-resolution, watermark-free exports, save-to-original, the Photos extension, and SDR Finder albums. Glowroom Pro is available as an auto-renewable monthly subscription ($3.99/month) or a one-time Lifetime purchase ($8.99). Payment is charged to your Apple ID at purchase confirmation. Monthly subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current period; manage or cancel anytime in your App Store account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://vlodkodesign.com/glowroom/privacy.html Make your photos brilliant!
Screenshots
Verdict
The clearest difference is iOS requirement: Instant HDR at 16.0 against Glowroom's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Instant HDR sells 1 in-app purchase, starting at $2.99 per month and Glowroom sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.
Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.
| Parameter | Instant HDR | Glowroom |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 7 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Alexander Chaldryan | MYKOLA KINDRATYSHYN |
In-app purchases
Instant HDR
- Instant HDR Premium$2.991 Month
Glowroom
- HDR Photo Lab Pro$3.991 Month
- HDR Photo Lab Pro Lifetime$8.99







