Work · alternatives · 2026
24 alternatives to Two Envelope Challenge
Brain Teaser App
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Two Envelope Challenge launched in 2021; newer entries below may have overtaken it.
- 1
Tough puzzles, riddles and trivia for your brain
2018 · its alternatives →
- 2
Get wise, agile, and reasoning through a tap of one letter!
2021 · its alternatives →
- 3
Solve logical mystery riddles by asking AI yes/no questions
2023 · its alternatives →
- 4
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- 7IM
2024 · vidzert.com · its alternatives →
- 8
- 9
- 10
- 11
- 12
- 13
Boost memory power with free brain teasers, logic puzzles
2020 · its alternatives →
- 14
- 15
- 16
- 17
75 brain teasers where the obvious answer is wrong
Jun 2026 · play.google.com · its alternatives →
- 18
- 19
Trivia Glide▲10Play any quiz topic by simply searching it 🔎
2024 · play.google.com · its alternatives →
- 20
Blast the Blocks, Train Your Brain!
Nov 2025 · play.google.com · its alternatives →
- 21
Fun & Brain-Teasing Challenges with Fruits!
2024 · play.google.com · its alternatives →
- 22
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- 24
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →