SyncGlow vs One Big Screen
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SyncGlow
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Everyone already has a phone in their pocket - why not turn them into art? SyncGlow transforms every screen in the room into a synchronized light show, creating crowd-wide visuals powered by real-time beat detection. One phone controls the party, and every other phone becomes part of the display - no extra hardware needed. HOW IT WORKS • Create a Party: One phone becomes the master, detecting the music's BPM in real time using the microphone. • Join the Party: Other phones on the same Wi-Fi network discover and join automatically. • Watch the Magic: Every screen displays the same synchronized visual effect, perfectly in time with the beat. 40+ VISUAL EFFECTS Choose from a stunning library of effects: plasma, kaleidoscope, aurora, fireworks, galaxy, matrix rain, liquid metal, fractals, and many more. Every effect responds to the music in real time. PERFECT FOR • Concerts & live shows • House parties & DJ sets • Dance floors & clubs • Group events & festivals • Silent discos • Team building & art installations FEATURES • Real-time BPM detection via microphone • 40+ shader effects across 8 categories • Automatic device discovery on local network • Sub-millisecond clock synchronization between devices • Full color palette control with live color picker • Works with unlimited connected phones • No account required, no sign-up • No internet connection needed - works entirely on local Wi-Fi SYNCGLOW PRO Unlock the full effect library with a one-time purchase. Free users get access to a curated set of effects to try before upgrading. Put the phone down, look up, and enjoy the moment together in the glow of the party.
One Big Screen
Transform your device into a vibrant LED display for messages and effects. Perfect for concerts, events, and parties, it offers customizable text, colors, and animations. Share your creations as GIFs or videos, and sync with friends for group displays.
- Scrolling or static LED text display
- Customizable fonts, colors, and effects
- Photo backgrounds for text
- Lightstick mode with color presets and flashlight sync
- Group Mode for synchronized displays
- Export as GIF, video, or transparent video
- iMessage sticker creation
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ONE BIG SCREEN turns your iPhone, iPad, Mac, or Apple TV into a bold, glowing LED display you can hold up anywhere. Type a message, choose your colors and font, and light up the crowd at concerts, sporting events, parties, raves, rallies, and fan meet-ups. LED BANNERS • Scrolling or static text with a bright LED-matrix glow • Dozens of fonts and full color control • Speed, glow, letter spacing, and dot-grid tuning • Photo backgrounds — put any image behind your text • Eye-catching effects: rainbow, pulse, flicker, bounce, wave, spotlight, and more LIGHTSTICK MODE • Turn your whole screen into a glowing color panel • Fandom color presets, custom colors, and bold rally colors • Flashlight sync — solid, strobe, or pulse-to-the-beat (iPhone) • Setlist mode — auto-cycle colors for each song LIGHT UP TOGETHER • Group Mode syncs banners and colors across nearby phones • Scan a QR code to join — one host lights up the whole section SHARE IT • Export as GIF, video, or transparent video for social • Every saved banner becomes an iMessage sticker automatically EVERYWHERE • iPhone, iPad, Mac, and Apple TV — your banners sync via iCloud • Hold it up, prop it on a stand, or cast it to the big screen No ads. No subscription required. Just light it up. Note: Strobe, beat-sync, and blink features use rapid flashing light that may affect people with photosensitive epilepsy.
Screenshots
Verdict
The clearest difference is device support: One Big Screen at 4 against SyncGlow's 2. SyncGlow's advantage is iOS requirement (15.1 vs 17.0). 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. SyncGlow sells 1 one-off in-app purchase and One Big Screen sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
SyncGlow ships an update every 9 days, One Big Screen every 2 weeks. Both last shipped on October 25, 2026.
| Parameter | SyncGlow | One Big Screen |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (4 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 4 — better |
| Update frequency | Every 9 days — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free |
| Devices | iPhone, iPod | iPhone, iPad, Mac, Apple TV — better |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 27 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | Liutauras Razma | Hello Good Day LLC |
In-app purchases
SyncGlow
- SyncGlow Pro$3.99
One Big Screen
- Premium Unlock$4.99








