To add to this, many markdown apps do support TODOs, but they use their own format. e.g. Bear uses
- [ ] Unchecked - [X] Checked
To add to this, many markdown apps do support TODOs, but they use their own format. e.g. Bear uses
If there was a widely-accepted standardized markdown format for TODOs you could write them in one app and then they would display properly in others.