LumiScreen vs Buzz
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LumiScreen
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LumiScreen 993311, the first of its kind in the App Store, helps you measure luminance distribution and color temperature when reading on-screen, guiding you to set a comfortable visual environment for work, study, game, and entertainment across screens like tablets, notebooks, monitors, TVs, projectors, and even mobile phones. Try it for free for 7 days, and enjoy the freedom to stop at any moment!" 1. LumiScreen 993311 turns the iPhone camera into a luminance meter and color meter, enabling iPhone users to measure the luminance and color temperature of screens and environments. 2. LumiScreen 993311 collects recommendations for luminance distribution from around the world to provide guidelines for iPhone users to digitally and accurately set a comfortable visual environment. 3. LumiScreen 993311 saves users hundreds, if not thousands, of dollars by eliminating the need to purchase professional meters for the same purposes. 4. Annual calibration services are provided for every supported model to maintain accuracy at its best possible level. *993311 is just a number for easy remembering, one can select the best option from a range. 5. Do not consider it as lab equipment; it is for consumers to check and set the luminance distribution of their screens. 6. The number 993311 is just for giving a number for easy remembering, one could select from a range of options. As heavy screen users, we have realized that luminance distribution of screens can make a huge difference to our eyes, and we have made all efforts to find recommendations on the internet. Unfortunately, there are no clear recommendations available anywhere. The only one that comes close is illuminance distribution for reading on paper in educational buildings. We have taken those recommendations and turned them into an equivalent visual luminance distribution, based on the assumption that the textbook reflective rate is an average of 77.5%, the reflective rate of surround and background is an average of 40%.. The SLL Code for Lighting by The Society of Light and Lighting (2.1.3, 2.1.4, 2.1.5) Relationship of illuminances on immediate surroundings to the illuminance on the task area: 500Lux for >750Lux, 300 for 500Lux, 200lux for 300lux, 150lux for 200lux … The background shall be illuminated with a maintained illuminance of 1⁄3 of the value of the immediate surrounding area. Please refer to https://www.cibse.org/get-involved/societies/society-of-light-and-lighting-sll Subscription 1. You can start your free 7-day trial by downloading the app from the App Store and then subscribing to our annual plan inside the app. 2. Subscription will give you quarterly accuracy calibration within the subscription duration 3. Payment will be charged to iTunes account at confirmation of purchase 4. Your subscription will automatically renew unless auto-renew is turned off at least 24-hour prior to the end of the current period 5. Your account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal 6. Your subscriptions can be managed by the user and auto-renewal may be turned off by going to the user’s Account Settings after purchase. 7. No cancellation of the current subscription is allowed during the active subscription period 8. Any unused portion of the free workouts will lapse once you purchase any subscription. 9. Privacy Policy link goes here: https://doc-hosting.flycricket.io/privacy-policy/10e05c5a-437b-41bb-acb0-d17e40343c04/privacy 10. Terms of Use link goes here: https://doc-hosting.flycricket.io/term-of-user/1dcdc237-9113-4952-acec-4e9e42eec604/terms This app (“App”) provides only information for educational purposes. This App is not medical or treatment advice, professional diagnosis, opinion, or services – and may not be treated as such by the user. Please seek a doctor’s advice in addition to using this app and before making any medical decisions.
Buzz
This app provides a collaborative workspace for humans and AI agents to communicate and make decisions. It features a unified log for all interactions, ensuring an audit trail for both human and AI actions. Agents can be added to channels like teammates, with their own identities and activity logs.
- AI agent integration
- Unified audit trail
- Real-time messaging
- Organized channels and threads
- Image and media discussion
- Self-hostable relay
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Buzz is a workspace where humans and AI agents share the same rooms. Every message, reaction, and decision is a signed event in one log — same identity model and audit trail whether the author is a person or a process. Add an agent to a channel the same way you add a teammate. Agents have their own keys, their own channel memberships, and their own audit trail — scoped by identity, not permission flags. • Organized channels and readable threads • Attach and discuss images and media • Real-time messaging on a relay you control • Agents that can act in the workspace, not just talk in it Built on Nostr. Self-hostable. The relay is yours.
Screenshots
Verdict
The clearest difference is price: Buzz at Free against LumiScreen's $4.99. Buzz also leads on in-app purchases (none vs 1). On ads, device support and iOS requirement 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
Buzz is free to download; LumiScreen costs $4.99 up front. LumiScreen sells 1 in-app purchase, starting at $9.99 per year. Buzz asks for nothing beyond the download.
| Parameter | LumiScreen | Buzz |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | — | 4.2 (65 ratings) — better |
| Positive reviews | — | 59.0% of reviews |
| Number of ratings | — | 65 — better |
| Update frequency | — | Every 4 days |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.4 | 16.0 — better |
| Further details — not scored | ||
| Size | 9 MB | 69 MB |
| Age rating | 4+ | 17+ |
| Developer | 刚 崔 | Block, Inc. |
In-app purchases
LumiScreen
- All Accesses7 Days trial$9.991 Year
Buzz
No in-app purchases









