Just for Fun Tools
15 tools
Argue Smarter
Test your ideas against the strongest criticism you can find
Belief Stress Test
Your guiding beliefs, pressure-tested. Where they hold. Where they break.
Bookmark
Pick up where you left off — without spoilers
Brain Roulette
Follow your curiosity somewhere unexpected.
Caption Magic
Find the words that fit the photo.
Comeback Cooker
For the response that arrived three hours too late.
History Today
Find the structural historical parallel — not the obvious one
Markup Detective
Why does this cost that? Follow the money.
Micro-Adventure Mapper
Turn a free hour into a small adventure
Plot Hole Finder
Find where the story stops adding up
Roast Me
Find the clichés, buzzwords, humblebrags, and cringeworthy phrases you stopped noticing long ago.
Six Degrees of Me
Discover the surprising threads that connect your experiences
Time Warp
Collide anything modern with any historical period.
Tip of Tongue
Describe it from memory — DeftBrain will figure out what it is.
Wrong Answers Only
Ask anything — get a confidently, beautifully wrong answer
Just for Fun guides
- Captions for Solo Travel Photos (That Don't Sound Like a Travel Brand)
- Free Things to Do Near You (That Are Actually Worth Doing)
- Funny Captions for Couples Photos (That Aren't Cringey or Forced)
- How Much Does Coffee Actually Cost to Make (When You're Paying $6 for It)
- How to Anticipate the Strongest Argument Against Your Position
- How to Argue Better
- How to Argue With Someone Who's Smarter Than You
- How to Argue Without Getting Emotional
- How to Caption a Photo When You Don't Know What to Say
- How to Catch Up on a Video Game After a Long Break (Without Spoilers)
- How to defend a position without getting defensive
- How to Find a Book You Read Once But Cannot Remember the Title
- How to Find That Movie Where Something Specific Happened
- How to Find That Song You Half-Remember
- How to Get a Recap of a Show Without Spoilers (For the Part You Haven't Watched Yet)
- How to Get Back into a Show You Abandoned (Without Restarting from Scratch)
- How to Handle Rude Comments from Family at Holidays
- How to Know If a Show Is Worth Picking Back Up (Or Just Letting It Go)
- How to Know If You've Actually Won an Argument
- How to Make a Regular Weekend Feel Like a Small Vacation
- How to prep for a meeting where you'll get pushback
- How to Prepare for a Debate
- How to prepare for a tough question you cannot answer
- How to Remember a Book You Read Years Ago (Without Re-Reading It)
- How to Remember a Word That Is on the Tip of Your Tongue
- How to Respond to "You’re Being Too Sensitive"
- How to Respond to a Backhanded Compliment
- How to spot a logical fallacy in an argument
- How to Spot a Logical Fallacy in Real Time
- How to steelman an argument you disagree with
- How to Tell If Something Is Overpriced (Without Being a Pricing Nerd)
- How to Write Instagram Captions That Get Engagement (Without Sounding Like an Influencer)
- The Perfect Comeback You Thought of Three Hours Too Late
- Professional Instagram Caption Examples (For When LinkedIn Voice Won't Work)
- Things to Do Alone That Are Not Sad
- Things to Do in Your City When You Have Already Done All the Touristy Stuff
- Things to Do This Weekend (When You Are Sick of Your Usual)
- What to Say When Someone Interrupts You in a Meeting
- Why Are Wedding Venues So Expensive (And Why the Word 'Wedding' Doubles the Price)
- Why Does Bottled Water Cost So Much (When the Stuff in It Is Basically Free)
- Why Does Everything Cost So Much More Than It Used To (It's Not Just Inflation)
- Why Does the Word Disappear When You Are Trying to Remember It?
- Why Is Airport Food So Expensive (And Why It's Not Just the Rent)