Flat Earth Sun & Moon Clock
Education · Blue Water Bay
Flat Earth Sun & Moon Clock screenshots
Flat Earth Sun & Moon Clock is an education app from Blue Water Bay that follows the sun and moon as they move across the AE, or Azimuthal Equidistant, map. The idea is simple to state: rather than showing the sky over a globe, it plots the two bodies around a circular world and lets you watch how day, night and the seasons play out on that model. It costs $5.99 up front and carries no ads.
What makes it more than a novelty is the amount of material built on top of that one idea. There is an analog clock, a time-lapse view, weather layers, a star wheel, reading lists and a set of social tools, all organized around the same map. For someone who wants to explore flat earth cosmology rather than just read about it, that combination is the main reason to consider the app.
Watching the sun lap the moon
The core of the app is the movement itself. The sun and moon are tracked across the AE map, and you can watch the sun's 28-day cycle lap the moon as both travel around the circle. An analog clock face shows the same information in a more familiar form, with day and night marked out, and the time-lapse view compresses the motion so you can see how the pattern shifts, particularly around the equinoxes.
Seasonal change gets its own treatment: the app shows the sun moving between the Tropic of Capricorn and the Tropic of Cancer over the course of the year. Sunrise and sunset times come with moon phase percentages, daylight savings handling and a choice between 12- and 24-hour clocks. Language options are included as well, and world time can be checked for any location.
A Zodiac Star Wheel adds an astrological layer, tracking the sun and moon through the zodiac cycles. It sits alongside the astronomical view rather than replacing it, so you can move between the two depending on what you are interested in. A countdown timer rounds out the timekeeping side for upcoming events.
Weather, compass and the view from outside
Weather is worked into the map rather than bolted on. Local conditions, temperature and sunrise and sunset times are available daily, while a world weather layer plots real-time data on the AE map, including wind patterns and magnetic flux lines, so it can be compared against the globe model. A more detailed local forecast sits behind the subscription.
The World Compass is aimed at one specific question: how circumnavigation would work on a flat earth model. It visualizes the path rather than just describing it, which is the sort of thing that benefits from being shown. Backgrounds can be swapped too, with Antarctica, high-altitude balloon shots and ocean vistas available, or you can upload your own image.
There is also a daily featured video on the sky clock, with an archive of past episodes to work through, and the app includes multi-language video and written content. For readers, there are flat earth-related books for all ages, from new titles to classics, along with shopping listings for products and community-made items.
Friend Finder and the community layer
The social side is built around Friend Finder, which connects users worldwide and lets you decide whether to share your location or keep it private. From there, messaging covers one-to-one conversations and group chats that can include video calls, and Match Maker searches for people within a radius you choose. Local gatherings are handled by Meetup Maker, which also alerts you to new events.
The developer notes that outgoing calls and messages, along with messaging and video chat, require the yearly subscription. That subscription is a one-time annual payment of $10.99 and is described as unlocking all premium features, including profiles, Match Maker, meetup creation, uncensored video and image search, and detailed weather services, plus future feature updates. In-app purchases are present, and the app itself is paid.
Recent updates have filled in some of the rough edges of the chat system. Messages now sync for users registered on the website, so those accounts can use the paid features in the app as well. A message badge updates properly, push notifications arrive when a new message comes in, and the broadcast message feature has returned, moved into the Match Maker and Profile areas. The meetup screen was refreshed alongside general design work and bug fixes.
One more community thread is the referral feature, which invites friends and earns $DOME crypto currency. Homeschoolers get their own area, with curated links and private social media group access. If you want to leave, the app allows you to delete your account and records at any time through the Friend Finder logout or the settings.
What the app asks of you
The clearest cost is the one at the door: $5.99 before you see anything. On top of that, the yearly subscription is what the developer describes as the key to the full set of features, and several of the most social parts of the app sit behind it. That structure is worth understanding before you buy, because the experience changes once you subscribe.
The platform requirements are stated for iOS: version 14.0 or later, and an iPhone 6 or later. That is a reasonably wide range, but older hardware is still excluded at the bottom end.
The other thing the app asks is a willingness to work within its model. Everything here is expressed on the AE map, and the comparisons with the globe model are framed from that starting point. That is the point of the app, not a flaw in it, but it does mean the material is written for readers who want to explore that perspective rather than a neutral survey of several.
Who the app is built for
I would expect this to appeal most to people already interested in flat earth ideas who want a tool rather than an argument. The sun and moon tracking, the flash cards, the books and the video archive all assume that interest and build on it. Someone who wants a conventional planetarium or an astronomy reference will find the framing here is doing something different.
The social features point to a second audience: users who want to find others nearby, join meetups, or take part in group chats and calls around the same subject. The app treats community as part of the package, not an afterthought, and the recent work on messaging and meetups suggests that side is being actively developed. Homeschooling families are another group the developer has clearly thought about, with a dedicated links section.
If you are curious about how the flat earth model handles time, seasons and navigation, the app is a fairly direct way to look at it. The map is the organizing principle, and nearly everything else in the app hangs off it.
A focused tool for a specific audience
Flat Earth Sun & Moon Clock has been around since late 2018 and now sits at a 4.5 average from nearly 5,000 ratings, with more than 50,000 installs. That is a healthy signal for a niche paid app, and the update history suggests it is being maintained rather than left alone. The $5.99 price is reasonable for the amount of material, provided you are in the audience for it.
My recommendation is straightforward. If flat earth cosmology interests you and you want a clock, map and community in one place, this is a well-stocked option and the yearly subscription is the switch that opens the social and weather features. If you are looking for a general astronomy app or a neutral comparison of world models, the app's focus will not match what you need.
For the right reader, the combination of sun and moon tracking, seasonal views, weather layers and a built-in community is unusual enough to justify the purchase. The subscription is the part to weigh carefully, since it carries much of what the app offers beyond the map itself.
The short verdict
A well-stocked flat earth clock and community app for a specific audience, with a yearly subscription carrying much of the feature set.
What's new in version 5.11.113
1. Users registered on website sync with app(Android + iOS) now, Website subscribed users will be able to use all paid features of app. 2. New message Badge is updating now (Chat system) 3. Push notification whenever new message arrive in Chat window. 4. Broadcast message feature is back (Changed position and shifted to Match Maker and Profile module). 5. Updated Meet-up screen. 6. Design improvements and Bug fixes.
App specs
- Version5.11.113
- UpdatedSeptember 11, 2026
- Downloads50K+
- RequiresAndroid 9+
- Price$5.99
- Age ratingEveryone
Flat Earth Sun & Moon Clock: frequently asked questions
What does Flat Earth Sun & Moon Clock actually show?
The AE (Azimuthal Equidistant) map shows where the sun and moon are. You can watch the sun's 28-day cycle lap the moon and follow the sun as it moves between the Tropic of Capricorn and the Tropic of Cancer across the year. An analog clock and a time-lapse view present the same motion in different forms.
Do I need the subscription to use the app?
No. The app itself is a $5.99 purchase, and the developer describes a one-time annual subscription of $10.99 as unlocking all premium features, including profiles, messaging, calls, Match Maker, meetup creation, uncensored video and image search, and detailed weather services.
What are the Friend Finder and Match Maker for?
Friend Finder connects you with other users worldwide, and you can choose to share your location or keep it private. Match Maker searches for people within a radius you select. You can start or join local gatherings through Meetup Maker, which notifies you of new events.
What extra content comes with the app?
There is a daily featured video on the sky clock with an archive of past episodes, plus multi-language video and written content. The app also includes more than 200 flat earth proof flash cards, reading lists with new works and classics, and a section of homeschooling links. A shopping area lists related products and community-created items.
What changed in the latest update?
Website accounts now sync with the app, and subscribers get the paid features. The chat system gained a working message badge and push notifications when a new message arrives, and the broadcast message feature returned in a new position within the Match Maker and Profile areas. The meetup screen was updated along with design improvements and bug fixes.
Pros
- Sun and moon tracked on the AE map
- Time-lapse and seasonal views included
- Weather layers with wind and magnetic flux
- Community tools with meetups and messaging
- No ads in the app
Cons
- $5.99 paid up front
- Yearly subscription needed for messaging and calls
- Detailed weather forecast requires subscription
- Requires iOS 14.0 or later
- Built around the flat earth model
Download Flat Earth Sun & Moon Clock
by Blue Water Bay
$5.99 · In-app purchases · Official store listings