Jan 31 2026: APP 2.0.0-beta40 will soon be released with many fixes especially for Linux, upgraded development platform and 10-20% performance boost !
Jan 15 2026: FIXED LICENSE SERVER VPN Tunnel issue
 The issue could have prevented APP to start when using a VPN tunnel or another complicated network configuration, like using APP on a remote computer on a different continent. This issue is fixed now and APP should start normally.
Jan 04 2026: Update on the 2.0.0 release & the full manual
We are getting close to the 2.0.0 stable release and the full manual. The manual will soon become available on the website and also in PDF format. Both versions will be identical and once released, will start to follow the APP release cycle and thus will stay up-to-date to the latest APP version. Unfortunately, Mabula was struck by a severe flu virus in the past couple of weeks and thus could not work. He is getting much better now and he has resumed work to release 2.0.0 as soon as possible. Once 2.0.0 is released, the price for APP will increase. Owner's license holders will not need to pay an upgrade fee to use 2.0.0, neither do Renter's license holders.
Nov 28 2025:Â APP 2.0.0-beta39 has been released !
Hi, been using APP for a few years now and this is the first time my flats arent calibrating my lights. I searched and tried all the tips I found in the forum, any help would be appreciated.
@pcapino Hi Paul,
What indicates that the flats aren't working? Can you explain as much as you can about the optical train, camera, type of data and flats so we can try to help you solve this?
Wouter
@Wouter, I'm using an ASI294mm with a 2" EFW + .8 reducer + skyrover 72ED. For acquisition I use ASIAIR, but use the flatwizard of NINA. 🙂 This is a stacked 1.5hr image of HA (no darks here). Gain 120/Offset 16/ Bin 2.
and here is the flat. I tried a tip of exposing at least 2 sec for the flat.Â
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@pcapino Hi Paul,
Combining calibration data taken with multiple software doesn't work well. Any chance to take the flats with ASIAir as well? It has a flat wizard as well.Â
Wouter
Hi Wouter, First try was a bust. but let me try again. I'll update you later on. Thank you!

