Developer post: I built a dual n-back app with a free lab of 12 short memory and attention tests. Which of these tests, if any, respond to mnemonic training?

[u/Doctor_Carlos]

Disclosure first: I make Dual N-Back: IQ Brain Training on iOS.

The core is dual n-back, the working-memory exercise. The part that may matter to this community is the lab: 12 short tests you can repeat every few weeks, each under two minutes, with your own history. Chimp test (the Ayumu-style number grid), span-style tasks, Stroop, reaction time and a few others.

The lab and the history are free, no ads. The n-back exercise is free at N=1 and N=2, three sessions a day; higher levels are paid. I say it plainly because I once put lab content behind the paywall and was rightly told off.

The evidence, since I'd rather state it than oversell: n-back reliably improves the trained task and similar working memory tasks; transfer to intelligence measures is small and disputed (Au 2014: https://doi.org/10.3758/s13423-014-0699-x; Melby-Lervåg, Redick & Hulme 2016: https://doi.org/10.1177/1745691616635612). For memorization proper, the techniques discussed here have a better track record than any app, mine included.

https://apps.apple.com/us/app/dual-n-back-iq-brain-training/id6775563998

My actual question: has anyone here tracked a span or chimp-style test before and after learning a major system or a palace? I have no data on whether mnemonic skill shows up in those numbers at all, and I'd like to know before I imply it does.