Grapheme-color synesthesia training v2.

Alberto Flaño Lombardo

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Dec 15, 2025, 4:28:31 AM12/15/25

to Dual N-Back, Brain Training & Intelligence

Many of you will remember this study: https://www.nature.com/articles/srep07089

trained group gain: 3 raw points, equivalent to 12.46 IQ points; control group gain: 0.11 raw points, equivalent to −0.11 IQ points

I already shared the version 1.0 of my Synth trainer, which was a mere translator. Now I have gamified it a little.

Versions in Spanish and English.

There may be bugs. Feel free to fork it as you see fit.

Synth 2.4.2.html

Synth 2.4.2_en.html

Alberto Flaño Lombardo

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Dec 15, 2025, 4:30:21 AM12/15/25

to Dual N-Back, Brain Training & Intelligence

Next, I will work in a subitizing/PASAT game to improve mathematical abilities.

Rem

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Apr 21, 2026, 4:37:30 PM (12 days ago) Apr 21

to Dual N-Back, Brain Training & Intelligence

Hi, this is great. I use it every day now. I added a logic mode to it with single prompt to gemini;)

Synth 2.4.2_en.html

Rem

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Apr 22, 2026, 10:14:07 AM (11 days ago) Apr 22

to Dual N-Back, Brain Training & Intelligence

Better, easier version with help grid.

Synth 2.4.2_en.html

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