[FEATURE] review mode for completed scenarios

[fabiosirna]

Feature Description

Introduce a new practice mode called Review Mode.
This mode would present the user with a series of random scenarios selected exclusively from the list of exercises they have already successfully completed.

Problem Statement

As illustrated in the attached screenshot, the application currently offers only two distinct paths: Training and Arcade.

For a user like me who is actively learning Helix, there is a missing link between initial learning and high-speed practice. Once scenarios are completed, it becomes difficult to maintain proficiency without an automated way to review them.

Currently, if I want to practice what I have already learned, I must either:

Manually scroll through 140+ items to pick an old exercise.

Play Arcade Mode, which might include commands I haven't unlocked yet.

There is no dedicated way to "review" and repeat only the scenarios I have already solved in a randomized order to solidify muscle memory.

Proposed Solution

Add an option to the main "Select Mode" menu: Review Mode.

When selected, the app should:

• Filter the entire scenario database for items marked as completed, those with the green checkmark;
• Randomly select a scenario from this subset.

Upon successful completion, immediately load another random scenario from the "completed" pool.

Priority

• Critical - blocks my usage
• High - significantly improves experience
• Medium - nice to have
• Low - minor improvement

[bug-ops]

@fabiosirna Thanks for the issue! I'd like to share how the current system already addresses this use case.

Arcade Mode uses FSRS (Free Spaced Repetition Scheduler)

When you play Arcade Mode, scenario selection is not random — it's weighted by the FSRS algorithm:

• Overdue commands (past scheduled review date): 40% weight
• Weak commands (low success rate): 40% weight
• Novel commands (never practiced): 20% weight
• Mastered commands: 10% base weight (still appear, just less frequently)

This means completed/mastered scenarios do appear in Arcade Mode, but the algorithm prioritizes scenarios containing commands you're more likely to forget. As you master more commands, the balance shifts — you'll see familiar scenarios more often since there are fewer "weak" or "novel" ones to prioritize.

Review Session for Commands

There's also a dedicated Review Session (accessible from Profile or Training screen, r key) that focuses specifically on commands that are due for review according to FSRS scheduling.

Summary

The current implementation provides spaced repetition at the command level, which means:

• Mastered content still appears, just at optimal intervals
• The system adapts to your learning progress automatically

Would a dedicated "Completed Scenarios Only" filter in Arcade Mode still be useful for your workflow, or does the FSRS-weighted selection address your needs?

[fabiosirna]

Hi @bug-ops and thank you for the detailed breakdown of the FSRS logic. It’s very helpful to understand how the app prioritizes what I need to learn.

Based on my experience using the app, I have some additional feedback and questions.

The fact that Arcade Mode is weighted by my learning history is a great feature, but it isn't clear from the UI. Adding a small description in the "Choose your training" screen would help users understand how it works.

I noticed that the Review Mode (r key) acts more like a flashcard (asking "Do you remember this command?") rather than a practice session. If I mark a command as "not remembered," it’s unclear what the next step is. It would be very helpful if the app could automatically launch a relevant practice scenario for that command instead of leaving me to search for it manually in the Training list. Is this something that will change according to your algorythm?

About time pressure...Arcade Mode is great for speed, but the time pressure can be a bit distracting when I just want to review and solidify muscle memory. I would personally love an option to disable the timer to focus purely on accuracy and repetition and use the timer in a time specific challenge.

Some scenarios feel a bit too short to be effective. For example, in Search exercises, the scenario often ends as soon as the word is found. It would be much better to have longer text blocks that require using n (next) or N (previous) multiple times to reach a specific target.

Overall, I'm really enjoying the software!

It's significantly improving my Helix skills :)