Focus Apps Are Failing Neurodivergent Students, UBC Study Finds

Focus apps designed to block digital distractions are making neurodivergent students feel ashamed of how their attention works, according to research published June 3 by Joanna McGrenere of the University of British Columbia and Kevin Chow, a former doctoral researcher at UBC and now at New York University. Their findings, co-written with UBC undergraduate Marvel Hariadi and published in The Conversation, draw on interviews with 27 neurodivergent post-secondary students in Canada and the United States who regularly use apps including Forest, Freedom, and Apple Screen Time. Every app they studied embeds the same assumption: focus follows a fixed-time schedule, and any deviation from it is failure.

Neurodivergent people, those with conditions including attention-deficit/hyperactivity disorder (ADHD), autism spectrum disorder, and generalized anxiety disorder, make up an estimated 10 to 20 percent of the Canadian population. Fewer than half of neurodivergent post-secondary students choose to disclose their diagnosis.

The Apps That Promise Control

The attention-management software category grew alongside a measurable decline in average digital focus spans, driven by how technology platforms compete for user time. Research tracking how technology engineers impatience has documented that shift in detail. The solution the category built borrows a mental model of attention from decades-old productivity methodology, one designed for a single type of brain.

Apple’s Screen Time, built into every iPhone, reached hundreds of millions of devices as a default setting. Freedom, the cross-platform website blocker, charges a subscription to wall off social media and news sites across all a user’s devices simultaneously. Forest gamifies the same premise: a virtual tree grows during a work session and dies if the user opens a banned app.

A market at that scale has grown on a single shared premise: blocking distraction produces focus. For an estimated 10 to 20 percent of potential users, the UBC study found, the premise fails.

How ADHD Focus Breaks the Pomodoro

McGrenere and Chow’s team recruited 27 neurodivergent post-secondary students who used distraction blockers regularly, with diagnoses spanning ADHD, autism, and generalized anxiety disorder. What the interviews surfaced traces back to one shared design decision: almost every distraction blocker available has built its core logic around the Pomodoro Technique.

The Pomodoro Technique, developed by Francesco Cirillo in the late 1980s, structures work into 25-minute uninterrupted blocks separated by short breaks. Distraction-blocking apps absorbed this model nearly universally: set a timer, lock everything else out, work until the clock hits zero. Users whose attention follows that rhythm often find the design effective. The 27 students in the study ran into it consistently, almost none of them sharing that rhythm.

Executive Dysfunction at the Starting Line

Executive dysfunction, the difficulty of organizing and initiating tasks, affects many people with ADHD and autism. When a focus app opens a timer and instructs the user to begin, students with executive dysfunction described sitting in front of a blocked screen, unable to start. The app had removed distraction without providing the external scaffolding those students need to initiate work at all. Several also reported sensory overstimulation, the cognitive overwhelm of busy or noisy environments, as a compounding factor: the apps’ rigid, timed regimes increased pressure in the exact moments the students were struggling most to begin.

Hyperfocus, Interrupted

ADHD users may also enter hyperfocus, a rare, hard-won condition of unusually deep task engagement. Some students described hyperfocus sessions that took substantially longer than a single 25-minute block to reach, with the brain requiring extended time to settle into demanding material. When the timer fires at the session boundary, it interrupts hyperfocus at precisely its most productive point. The app logs a completed block; the user loses a state that took real effort to find and may not recover within the same sitting.

Timers as Stressors

For participants managing anxiety, the countdown became the obstacle. The visible pressure of time depleting toward zero triggered stress that mounted throughout the session. Several students described focus timers as generating urgency; the app built to create stable work conditions had introduced a time-pressure mechanism that worked against the calm it was supposed to provide.

The Researchers Call It Digital Stimming

Several of the 27 participants said they deliberately disabled their distraction blockers mid-session to look at distracting content.

McGrenere and Chow’s team traced this to something well-documented in clinical settings. Stimming, or self-stimulatory behavior, refers to repetitive physical actions, leg-bouncing, tapping, rocking, that neurodivergent people use to regulate sensory input and manage cognitive overload. Clinicians frame it as a recalibration mechanism: a brief, predictable input that helps an overloaded or under-stimulated nervous system settle before re-engaging with demanding tasks. What the researchers observed in their participants was the same function playing out digitally. A student who pulled up a familiar YouTube clip before returning to a demanding assignment described the act, to the researchers, as giving their system a brief, predictable input to settle it before starting work.

The research team named this pattern “digital stimming”: engaging with familiar, low-demand digital content to manage cognitive overload and ease transitions into demanding tasks. The finding identifies what the apps are suppressing for this population, a self-regulation mechanism the brain uses to manage overload and initiate work.

No current distraction blocker recognizes or supports this pattern. A user who relies on digital stimming has to choose between a fully-blocked state that removes the reset and an unblocked state that risks extended scrolling. Both Freedom and Apple Screen Time operate on the same all-or-nothing model, and none of the apps in the study’s scope offered anything between. Participants reported that the content that calmed them could pull them into hour-long sessions the blocker was supposed to prevent.

When the Focus Score Becomes a Shame Score

Forest’s visible focus-time tracking created a shame loop for several participants. The app displays cumulative focused minutes as a motivational feature. The researchers found that for their neurodivergent participants, the accumulating count became a comparison point: their session totals measured against what they imagined peers were achieving, with the gap becoming evidence of inadequacy.

The dependence question surfaced repeatedly. Several participants described their relationship with distraction blockers as a “crutch” and asked whether they would need these apps “for the rest of their lives,” language the researchers recorded directly from their subjects. The apps provide no answer. They offer no pathway toward reduced reliance, no framing that positions variable attention as normal variation, and no progress measure beyond cumulative minutes on-task.

The apps’ vocabulary compounds this. Distraction blocking is framed across the category as control regained. Ending a session early or needing a break registers as a lapse. For students already navigating a productivity system built for neurotypical attention, that vocabulary amplifies a pre-existing sense of inadequacy.

Designing Away from the Timer

The research team published three concrete design directions alongside their findings, each targeting a specific failure mode in current tools.

Curated Break Modes

The direct fix for digital stimming starts with the app’s state model. Instead of two options, fully blocked or fully open, a blocker could offer a third: a brief, bounded window of user-selected familiar content. Two minutes with a playlist chosen in advance, contained within the app’s own timing, then a return to the blocked state. The stimming reset happens within a managed boundary; doomscrolling has no foothold. None of the apps the team reviewed offered this.

Goal-Based Blocking

The timer model can be replaced with output-based rules. The blocker stays active until the user completes a defined task step, a paragraph written, a specific file saved, a problem set section submitted. The output goal replaces the countdown. For someone with time blindness who struggles to sense 25 minutes passing, a concrete deliverable is a more actionable anchor, and the measure of a session’s success shifts from duration to output.

The Scaffold Model

The language apps use matters as much as their mechanics. Current designs frame distraction blocking as control over a failure tendency. The researchers’ third proposal reframes this: affirming language treats the app as a temporary scaffold toward better self-knowledge. Progress metrics tied to each user’s own past performance, with positive responses when focus fluctuates, normalize variable attention as expected variation. The goal is a tool users gradually need less of as their understanding of how they focus grows.

A market projected at $7.7 billion by 2033, per MarketGrowth Reports, is built on a model the UBC researchers say was designed without accounting for a significant share of users whose attention works differently.