Synapse: Brain Games & Puzzles

36 brain training games. No ads. No subscriptions. No internet needed. Free.

Most brain trainers interrupt you with adverts every other round, or lock the good games behind a subscription. Synapse does neither. Every game is unlocked from the start, there is nothing to buy, and you will never see an advert. It works completely offline — the app does not even ask for internet permission.

WHAT'S INSIDE

36 hand-built mini-games across five skill areas:

• MEMORY (8 games) — Shopping List, Strange Signals, Hidden Ghosts, Pass the Ball, Secret Code, Phone Number, Color Recall, Fingerprints

• ATTENTION (10 games) — Arrows, Silent Space, Crime Scene, Identical Items, Treasure Hunt, Missing Number, Tricky Patterns, Color Match, Lost & Found, One Man Out

• MATH (5 games) — Math Audit, Missing Operator, Basic Math, Tasty Fractions, Math Crossword

• LOGIC (6 games) — Odd One Out, Robotic Flows, Tower of Hanoi, Spy Anagrams, Tap Away Arrows, Twins Connect

• SPEED (7 games) — Reaction, Find Color, Swipes, Colored Cells, Schulte Table, Disjunction, Pattern Compare

HOW IT WORKS

• A daily workout picks three games for a short session of about seven minutes

• Each game has five difficulty levels that unlock as you improve, so it keeps getting harder

• Track your progress with skill levels, personal best scores and 36 mastery badges

• Build a daily streak to keep yourself consistent

• Back up your progress to a file at any time, and restore it on a new phone

BUILT WITH RESPECT FOR YOU

• No adverts of any kind

• No subscriptions, no in-app purchases, nothing to unlock

• No account, no sign-up, no email required

• No internet permission — the app cannot send data anywhere

• No analytics, no tracking, no third-party code collecting anything

• Your progress stays on your device

A NOTE FROM THE DEVELOPER

I built Synapse because I wanted to spend my idle minutes on something better than endless scrolling. The brain trainers I tried were genuinely good, but the adverts and subscriptions wore me down — sometimes I watched more adverts than I actually played. So I made the app I wanted to use, and I am giving it away.

It is a one-person project, so if you find a bug or have an idea for a game, please get in touch through freebraingames.net. If you enjoy it and want to support the hosting costs, there is a "buy me a coffee" link on the site — entirely optional.

You can also play every game free in your browser at freebraingames.net.

Enjoy the training.