Curated free & paid sources to help you invest your daily time.
| Platform | Type | Area | Cost | Link | Note |
|---|---|---|---|---|---|
| Web / iOS / Android | Mini-games | Memory, Focus | Free / Pro | Lumosity | 10–15 min daily sessions |
| Web / iOS / Android | Puzzle | Logic, Problem Solving | Free | Chess Puzzles | Solve one puzzle daily |
| Web / Mobile | Typing | Productivity | Free | Keybr | 10 minutes typing practice |
| Web / iOS / Android | Language | Vocabulary | Free / Plus | Duolingo | Language track 15 min/day |
| Web | Brain Teasers | Math, Logic | Free | Brilliant Daily | Short daily problem |
| iOS / Android | Crossword | Language | Free | NYT Crossword | Improve vocab + focus |