Unfortunately I don’t have good news on the state of the android app: I am retiring it. The last release on Github and F-Droid will happen with the December 2024 Syncthing version. Reason is a combination of Google making Play publishing something between hard and impossible and no active maintenance. The app saw no significant development for a long time and without Play releases I do no longer see enough benefit and/or have enough motivation to keep up the ongoing maintenance an app requires ...
One of the greatest advantages of the totalitarian elites of the twenties and thirties was to turn any statement of fact into a question of motive. – Hannah Arendt

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might
That word is carrying a mighty big load.
Disappointing ending? As Above, So Below? Oh I’m sorry but…
spoilerending with the world turned upside-down and yet the same as before is entirely consistent with the alchemical, Enlightenment, philosophical, and psychological recognition of opposites, of turning things around, of viewing difficult (e.g. your worldview) and seemingly easy (e.g. memories) subjects from another perspective. Remember where some of the journeyers were interested in the room of gold, and others in the wall of symbols? That’s the metaphor for the ending.
Looked at this way, the ending is thrillingly deep. Seriously, once Dick Gregory’s observation* is understood, this movie encourages an irreplaceable insight. It’s a trip though, you’re right about that, from “riding high,” as you say, to the darkest of depths, which is all-too-easily missed. Good flick, give it another go; the movie is the ride, the ending is the worthy destination.