LED Display vs Carbon Quest
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LED Display
Create custom LED signs for cheering, notifications, or messages. Easily adjust text color, size, brightness, and display speed for impactful communication in various settings.
- Customizable text and background colors
- Adjustable text size and brightness
- Full-screen display mode
- Adjustable scrolling speed
- Blink mode
- LED pattern options
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Create and use your own message easily, such as electronic boards, cheering, and notifications. - A must-have item for cheering - When you want to deliver it instead of saying it - When you want to say something at the stadium with a sports cheering tool, Deliver effectively anytime, anywhere on the LED display instead of your words. Features of this app (LED display) • Adjust text color and background color • Resize text • Full-screen view support • Brightness adjustment support • Lateral and speed support • BLINK MODE SUPPORT • LED Pattern ON/OFF support Now, cheer for us with LED screens!
Carbon Quest
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Carbon Quest keeps track of people’s environmental behaviors and motivates them to make better changes to the environment. Through this app, users manage their carbon emission activities by entering their daily activities. The users can make improvements to their behaviors with an optimal environment: daily and monthly analyses, a monthly leaderboard, and trade between users. All these systems work together to foster friendly competition between the users and to motivate them.
Screenshots
Verdict
The clearest difference is in-app purchases: Carbon Quest at none against LED Display's 1. Carbon Quest also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). On price, update cadence and device support 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. LED Display sells 1 one-off in-app purchase. Carbon Quest asks for nothing beyond the download.
LED Display ships an update every 4 days, Carbon Quest weekly. The most recent releases landed on October 12, 2026 and October 25, 2026 respectively.
| Parameter | LED Display | Carbon Quest |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 4 days — better | Weekly |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 22 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | KiMin Sung | XPRTIS INC. |
In-app purchases
LED Display
- Remove ads$6.99
Carbon Quest
No in-app purchases
Questions
Is LED Display free?
Is Carbon Quest free?
Do LED Display or Carbon Quest have ads?
Which is updated more often, LED Display or Carbon Quest?
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