[aidanhs]

(disclosure: I don't use tasker and am not associated with them, I do work on something in the similar space of "compute without servers")

First, you're coming at this from the wrong perspective. The OP is about alternatives to Heroku - the starting position is "I don't want to use servers". There are a number of rational reasons for this, including OS maintainence and the mental overhead of setting up continuous deployment from your repo (ansible to configure cron? a self-hosted PaaS?). "Don't worry about servers" doesn't just make sense in principle, it's also quite popular in practice - just consider the uptake of things like serverless.

So, starting from "no servers", how do you run something on a regular basis? Let's say "send me a message on telegram daily with some info". Serverless and similar offerings are useless for this, they're a different model (request/response). I did research on "hosted cron" at the time and the options were pretty terrible - there's definitely space here for tasker.

FWIW, this is coming from someone with a default position of "self-hosted only". For my own use, I tried out cron and airflow - they're both annoying and I settled on bgproc [0] as least-worst on my already-existing personal server. I really wanted to move to something hosted by the time I was done (tasker didn't exist).

[0] https://github.com/seanbreckenridge/bgproc