In 2014, 71 cognitive neuroscientists signed an open letter warning that Lumosity and similar apps were making false claims about brain improvement. In 2016, Lumosity paid the FTC $2 million to settle deceptive advertising charges. And yet in 2026, the category is larger than ever, with Lumosity, Elevate, and Peak all above 50 million downloads. Something is going on here. The question is whether any of these apps produce real cognitive benefits — and if so, which one.
What the research actually says
The scientific consensus on brain training apps is nuanced. The core finding from a 2014 meta-analysis of 52 studies: brain training tasks produce near transfer (you get better at the specific task) but limited far transfer (improvement in general cognitive ability). In plain English: playing a memory game makes you better at that game, but doesn't necessarily make your real-world memory meaningfully sharper.
However, more recent research (2020–2024) has identified specific conditions under which cognitive training does produce real-world benefits:
- Training that involves working memory under cognitive load (not just pattern recognition)
- Training that involves effortful arithmetic and mathematical reasoning
- Training performed in a context of cognitive challenge, not mere repetition
- Training integrated into real tasks rather than isolated games
This distinction matters a great deal when evaluating specific apps.
The four apps, compared
Lumosity ($14.99/month)
Lumosity offers 50+ games across memory, attention, speed, flexibility, and problem-solving. The games are polished, the daily training plan is structured, and the performance metrics over time are motivating. The issue: most Lumosity games are pattern-recognition tasks. They produce near transfer reliably but have limited evidence of far transfer to real-world cognitive performance.
Lumosity is the brand-recognition leader in this category. It's fine as a daily mental exercise routine. It's not the cognitive transformation its marketing once implied.
Elevate ($4.99/month)
Elevate focuses on verbal and mathematical skills: writing, reading comprehension, grammar, mental math, vocabulary, and listening. The training feels more like genuine skill-building than gaming. A 2019 independent study found that Elevate users showed measurable improvements in verbal intelligence scores after 30 days of consistent use.
The math training is particularly strong — Elevate's mental arithmetic games increase in difficulty with your performance, creating genuine cognitive challenge rather than comfortable repetition. This is closer to the research-validated training conditions mentioned above.
Peak ($4.99/month)
Peak positions itself as the most "science-backed" app in the category, with an advisory board of neuroscientists. The games are well-designed and cover a broad range of cognitive domains. Peak's 2021 internal study showed improvement on their own in-app cognitive assessments — which again raises the near-transfer concern. Third-party replication of those results is limited.
Hopopop (€4.99/month)
Hopopop is not primarily a brain training app — it's a phone screen time manager. But its core mechanism is cognitive: every time you open a blocked app, you solve a question drawn from math, general culture, logic, language, or science. Unlike dedicated brain training apps, this training happens in context — at the exact moment of a habitual behavior (reflexive phone checking).
This is meaningful. The 2021 research on "contextual cognitive training" suggests that training embedded in real behavioral contexts produces stronger transfer than isolated training sessions. Solving a mental math problem before opening Instagram isn't just a blocker — it's a real-world cognitive exercise repeated dozens of times daily.
Head-to-head comparison
| App | Focus area | Evidence quality | Price/month | Real-world integration |
|---|---|---|---|---|
| Lumosity | Broad cognitive | Medium (near transfer) | $14.99 | None |
| Elevate | Verbal + math | Good | $4.99 | None |
| Peak | Broad cognitive | Medium | $4.99 | None |
| Hopopop | Math + general knowledge | Good (contextual) | €4.99 | Built-in (every app unlock) |
Which app should you use?
The answer depends on what you're trying to achieve:
- If you want structured daily cognitive training as a stand-alone habit: Elevate is the best value. The verbal and math training has real evidence behind it and the game design is strong.
- If you want the most polished experience with the broadest game library: Lumosity, understanding that the evidence for broad transfer is limited.
- If you want cognitive training that simultaneously solves your phone addiction problem: Hopopop. The training volume is high (every unlock), the context is real-world, and you get the screen time management as a primary benefit on top of the cognitive exercise.
Our recommendation
For most people, we'd recommend combining Elevate (15 minutes daily, pure training) with Hopopop (ongoing contextual training + screen time management). This gives you dedicated skill-building plus high-frequency real-world cognitive exercise, for approximately the same monthly cost as Lumosity alone.
Train your brain every time you reach for your phone.
Hopopop turns every app unlock into a quick mental challenge. Available on iOS and Android.