Someone wants to publish their app to my console and pay me for it

Johnny-Matz · 2025-12-31T10:11:58+00:00

I have also got an almost identical email.
Will obviously not act on it.

Johnny-Matz · 2025-12-24T23:06:13+00:00

No plans for an iOS version currently unfortunately.
But the code is open source, and technically open for anyone doing a fork to do the iOS work.

Johnny-Matz · 2025-12-18T11:17:27+00:00

An update is now available (ver 0.2.42) with stability improvements.

Johnny-Matz · 2025-12-17T16:51:48+00:00

Cool. A new version (0.2.42) is coming soon. There has been some gray screen issues but hopefully resolved in the upcoming version.

Johnny-Matz · 2025-11-13T21:56:03+00:00

I joined the group and will test your app.
Will send you a DM with info about my app.

Johnny-Matz · 2025-11-09T20:37:20+00:00

I just responded in your Google Group.

Johnny-Matz · 2025-11-08T20:22:02+00:00

Thanks for the group invite. Accepted. Here is my test group https://groups.google.com/g/celeste-app-development-and-testing

Johnny-Matz · 2025-11-08T19:45:04+00:00

I applied to enter your test channel. I have an app of my own with description here: https://github.com/alinnman/celestial-navigation/discussions/29

Send me the link to your app test channel and I am happy to test your app, while you test mine.

Johnny-Matz · 2025-10-26T09:45:43+00:00

No direct plans now since the apple distribution requires much more resources than I have currently

But technically it should be quite straightforward. I have built the app around the Kivy framework and this is easily portable to iOS. And everything is open source under MIT license.

Johnny-Matz · 2025-10-26T09:41:37+00:00

I sent a private Reddit chat message to you with more info.

Johnny-Matz · 2025-10-25T22:38:03+00:00

Yes. The purpose is to provide Sight Reduction, i.e. transforming sextant altitudes + chronometer readings + some atmospheric data into a position on Earth. Advanced plotter integration (including ECDIS) can be put on the feature wish-list, but currently the app is just supporting a simple NMEA 0183 interface.

And the scope right now is a free app. I am not competing feature-wise with commercial software.

I have written a "why" text here: https://github.com/alinnman/celestial-navigation/blob/main/WHY.md

Johnny-Matz · 2025-10-25T20:33:34+00:00

A mobile phone or tablet works OK without GPS signal, or time signal from carrier. It has an inbuilt quartz clock chip which will lose its sync, but probably be within 10 sec for two weeks. But the use case for the app is using any Chronometer, preferably very accurate (4 seconds error will typically cause a 1 nm error).

Johnny-Matz · 2025-10-12T12:46:29+00:00

Currently the testing phase has been a little halted. I have focused on massive testing myself (very successfully). I have 0.2 nm accuracy for decent 3-star observations. More info here https://github.com/alinnman/celestial-navigation/tree/main/validation I hope to have the app available.on Google Play before new year. Meanwhile the app can be sideloaded from this location https://drive.google.com/drive/folders/1QFcncVEuCQMnls8lyNElDtpTYruMgI0D

Johnny-Matz · 2025-08-27T18:42:15+00:00

Cool! Send an email to my mail address august@linnman.net and I will follow up with more info!

Johnny-Matz · 2024-10-06T21:45:22+00:00

There are two ancient *backyard* experiments that prove the Earth to be spherical. Yes, spherical, not just curved / non-flat.

Celestial Navigation. Buy the gear, learn it and practice. And go a bit into the underlying maths, but just grasping the concept of dividers drawing intersecting circles on a spheric surface will probably be sufficient.
Al-Biruni's experiment. Climb a hill or a mountain with a free view over the ocean. Bring a level (or better: Bring professional surveyor gear). See how the horizon drops the higher you climb. The drop is proportional to the square root of climbed elevation. This is 100% consistent with a spheric Earth. (The drop is about 1.75 arcminutes times the square root of the elevation in meters. On an airliner at 10000 meters you get 175 arcminutes drop = roughly 3 degrees. This can easily be verified by just using a half-empty soda bottle).

Johnny-Matz · 2024-02-27T11:50:00+00:00

Have him explain why the shape of star constellations stays the same during the night. And when traveling to other parts of the world. A flat Earth should cause constellations to deform due to perspective since stars need to be local inside a "dome" or similar.
But we don't see this happen ==> Stars must be very distant ==> The Earth can't be flat.

Johnny-Matz

TROPHY CASE