The call: do not buy two subscriptions. Start free, prove the habit, then join one. Sixteen of the forty books below are marked SUMMARY FIRST - those are the ones where a summary genuinely gets you the value. The rest are FULL BOOK: there a summary is a waste, because the argument, the stories or the narration is the point.
Free lane, works today: Four Minute Books (written, searchable) plus YouTube summaries. Run the first three or four books through the free lane and see whether a summary ever tells you enough to skip a book. If it does, it is worth paying for.
Then join Blinkist - the audio-first app, which is your lane, and it covers the business and self-development titles well. 14-day trial; cancel it the month you stop opening it. Take Shortform instead only if you want deeper 20-30 minute guides on the dense science titles (Outlive, The Hungry Brain, Loneliness). getAbstract is the business-only option if the Wealth list is the one you actually work.