Rethink
Dealcontent-filtering software that delays sending potentially cyberbullying
Rethink is a content-filtering software that delays sending potentially cyberbullying that got its big break on Shark Tank in Season 8, and convinced Mark Cuban and Lori Greiner to invest.
As an Amazon Associate, Shark Tank Index earns from qualifying purchases.
Affiliate link — we may earn a commission at no extra cost to you.
Some Shark Tank products rebrand or sell under a parent company. The button above searches current Rethink listings on Amazon so you see what's actually available today.
From the show
The Shark Tank pitch
- $100K
- Asked for
- 20%
- Offered equity
- $500K
- Sought valuation
- $100K
- Deal amount
- 20%
- Deal equity
- $500K
- Deal valuation
The team stepped onto the carpet in Season 8, Episode 1 in the episode that aired September 23, 2016. Rethink, the content-filtering software that delays sending potentially cyberbullying, pitched in the Tech & Software category, one of 73 tech & software businesses to brave the Tank across all 17 seasons.
The ask was $100,000 for 20% of the company, an implied valuation of $500K.
Mark Cuban and Lori Greiner teamed up at $100,000 for 20% equity. The deal valued the company at $500K.
Season 8 saw 96 pitches, and 59 of them closed a deal on air. In the Tech & Software category overall, roughly 56% of pitches have landed a shark across the show's history.
Is Rethink still in business?
Read our 2026 update on where the company is now.
Sold on Rethink?
Check today's price and availability before it swims away.
Affiliate link — we may earn a commission at no extra cost to you.
Frequently asked questions
Where can I buy Rethink?
Check current price and availability on Amazon. Note that some Shark Tank products are discontinued or sold under a new name.
Did Rethink get a deal on Shark Tank?
Yes. Rethink closed a deal for $100,000 in exchange for 20% equity, with Mark Cuban and Lori Greiner.
Which shark invested in Rethink?
Mark Cuban and Lori Greiner invested in Rethink ($100,000 total as aired).
What season of Shark Tank was Rethink on?
Rethink appeared in Season 8, Episode 1, which aired September 23, 2016.
How much was Rethink asking for on Shark Tank?
The founders asked for $100,000 for 20% of the company, a $500K valuation.
Shark Tank Index may earn a commission on purchases made through links on this page. Deal figures reflect what aired; terms sometimes change after the show.
