Opal is polished and capable. Soren is the on-device, no-account alternative whose lock-in can’t be skipped mid-session, blocks Safari, and scores sleep and activity, not just focus. Read →
Do brain-training apps work? Lumosity, Elevate, Peak and the evidence
Brain-training apps promise sharper focus, faster thinking and less brain fog, all from a few minutes of bright little games a day. The honest summary of decades of research: you get very good at the games, and that improvement mostly stays inside the games. Here is what they train, why the carry-over to real life is weak, and what helps your attention more.
The pitch is irresistible. Train your brain like a muscle, watch a score climb, feel yourself getting sharper. Lumosity, Elevate and Peak have all sold it well. The trouble is not that the games are fake - they are real cognitive tasks - but that getting better at a task and getting better at life are not the same thing.
What each one actually trains
| App | Trains | Evidence of transfer | Best for |
|---|---|---|---|
| Lumosity | Memory, attention, speed mini-games | Weak in independent studies | A daily warm-up habit you enjoy |
| Elevate | Reading, writing, maths, speaking drills | Limited evidence of far transfer | Practising concrete communication skills |
| Peak | Memory, language, problem-solving games | Improves the games, little beyond | Variety and gentle daily challenge |
| Dual N-Back tools | Working memory under load | Mixed and much-debated in research | The curious who like a hard, dull drill |
| Soren | Real deep-work reps, not a game | It is the real task | Protecting attention while you actually work |
“Transfer” here means whether a skill practised in the app shows up in unrelated real-world tasks. Characterisations above summarise the general weight of independent research, not any single study.
The transfer problem
Psychologists split improvement into near transfer and far transfer. Near transfer is getting better at a task very like the one you trained - play a matching game daily and you will ace that matching game. Far transfer is the prize everyone is actually buying: train working memory in an app and find yourself more focused in a meeting, calmer reading a long document, less foggy at 4pm. That is the link the evidence struggles to find.
Large reviews and a well-known 2016 consensus statement from a group of scientists landed on a careful verdict: brain-training improves performance on the trained tasks, shows little reliable benefit on closely related tasks, and almost no evidence of improving everyday cognition. People do improve. The improvement just does not travel.
Why the games feel like they work
Two things make brain-training feel more powerful than it is. First, you do improve at the games, and a rising score is satisfying, so the feedback loop is real even when the benefit is not. Second, showing up daily, sitting down, and concentrating for a few minutes is itself a small focus rep. The ritual may help more than the puzzle inside it.
What actually helps attention
The interventions with the strongest evidence for real focus are unglamorous and free:
- Sleep. Nothing in an app store rivals 7-9 hours of decent sleep for attention, working memory and mood. Brain fog is very often under-slept brain.
- Real focus reps. If you want to be better at deep work, do deep work. Practising the actual task beats practising a proxy for it - that is near transfer working in your favour.
- Removing distraction. Most lost focus is not a training deficit, it is an interruption problem. Taking the phone and the notifications out of reach does more in a minute than a mini-game does in a month.
- Movement and breaks. Regular physical activity and genuine rest both show steadier support for attention than any single brain-training drill.
Where a real focus lock beats a mini-game
This is the gap Soren is built for. Instead of training a proxy and hoping it transfers, Soren has you do the real thing and protects it. The lock-in is OS-level Screen Time blocking with no pause, no skip and no early exit, so a focus session is a focus session rather than a tab you close in three minutes. That is not a game you get good at. It is the actual rep.
Each day folds into one 0-100 Soren Score, computed entirely on your iPhone from three pillars: Focus from your deep-work sessions, Sleep auto-detected from iPhone motion and written to Apple Health, and Physical from HealthKit movement. The score is an honest reflection of the day your attention had - a mirror, not a diagnosis, and never a claim about your brain’s health.
There is no account, no server and no analytics. Nothing leaves the device. Where a brain-training app banks a score on someone else’s computer for a benefit that may not transfer, Soren keeps a private number that counts the focus you genuinely did.
Soren is iOS 17+, on the App Store. Nothing here is medical advice or a diagnosis; the Soren Score is an estimate and a reflection, not a clinical measure. If you are worried about persistent brain fog or attention, speak to a clinician.
Screen Time is built in and fine for soft limits. But its app limits offer a one-tap escape, and it is limits, not a score. Here is where Soren is different. Read →
How the major focus and screen-time apps compare - by how hard they are to bypass, what they measure, and what they do with your data. Read →