The research guiding Lifeline's design
Lifeline's design is guided by a small number of well-studied findings about how people track, plan, focus, and change their behaviour. This page names them, cites the studies, and shows where each one lives in the app.
We claim only what the evidence supports. These studies show that the mechanisms Lifeline is built on work; they are not a study of Lifeline itself. Effect sizes in this literature are real but moderate - a tool can support behaviour change, not automate it.
Recording your progress improves goal attainment
The finding. A meta-analysis of 138 randomized studies (19,951 participants) found that prompting people to monitor their progress toward a goal reliably increased goal attainment - and the effect was larger when progress was physically recorded rather than just noticed.
The study. Harkin, B., Webb, T. L., Chang, B. P. I., et al. (2016). Does monitoring goal progress promote goal attainment? A meta-analysis of the experimental evidence. Psychological Bulletin, 142(2), 198-229.
In Lifeline. The core loop: recording what you did, as you do it, on the same canvas where you planned it. The tracking flow is designed to make recording take seconds - because the evidence says physically recorded progress outperforms progress that is merely noticed.
Time management improves wellbeing more than output
The finding. A meta-analysis covering decades of time-management research found it moderately improves job performance and academic results - but its strongest link is to wellbeing, especially life satisfaction, and it moderately reduces distress.
The study. Aeon, B., Faber, A., & Panaccio, A. (2021). Does time management work? A meta-analysis. PLOS ONE, 16(1), e0245066.
In Lifeline. Lifeline isn't pitched as a productivity multiplier. The goal is a clearer relationship with your time - the evidence says that's where the payoff actually is.
Why Lifeline has no streaks
The finding. Across seven studies, researchers found that a logged streak becomes a goal in its own right, separate from the activity it was meant to encourage - and that once it breaks, people become measurably less likely to continue the activity at the next opportunity.
The study. Silverman, J., & Barasch, A. (2023). On or off track: How (broken) streaks affect consumer decisions. Journal of Consumer Research, 49(6), 1095-1117.
In Lifeline. There are no streaks, chains, or check-ins. Your analytics show consistency over time as data, not as a scoreboard you can lose. Missing a day changes a chart, not your standing.
One lapse is a data point, not a verdict
The finding. Research on the abstinence-violation effect shows that a single lapse, when treated as a global failure, can trigger a "what-the-hell" spiral that abandons the goal entirely. Self-compassion research shows the antidote: people who respond to a lapse with self-kindness rather than self-criticism feel less distress and stay more motivated to improve - without lowering their standards.
The studies. Marlatt, G. A., & Gordon, J. R. (Eds.). (1985). Relapse Prevention: Maintenance Strategies in the Treatment of Addictive Behaviors. Polivy & Herman's counterregulation work - the origin of the what-the-hell effect, named in print by Cochran & Tesser (1996). Neff, K. D. (2003 onward) - the self-compassion programme, with Adams & Leary (2007) and Breines & Chen (2012) on recovery after a lapse.
In Lifeline. The analytics are a mirror, not a scoreboard. Nobody executes their plan perfectly; the design assumes it. What you see is where your time went - impartially - so a missed block reads as information, not judgement.
You don't actually know where your time goes
The finding. People systematically underestimate how long things take - in the classic study, students predicted finishing their thesis in 33.9 days on average. The actual average: 55.5. A key cause: neglecting the evidence of their own past.
The study. Buehler, R., Griffin, D., & Ross, M. (1994). Exploring the "planning fallacy": Why people underestimate their task completion times. Journal of Personality and Social Psychology, 67(3), 366-381.
In Lifeline. Your past sits on the same calendar as your future. When you plan the next week, the record of the last one is right there - the reference point the planning fallacy shows we otherwise ignore.
Every context switch has a cost
The finding. Switching tasks makes people measurably slower and more error-prone, and the cost shrinks but never disappears with time to prepare - the "residual switch cost". Attention doesn't move cleanly either: part of it stays on the previous task and degrades performance on the next one, a phenomenon known as attention residue.
The studies. Monsell, S. (2003). Task switching. Trends in Cognitive Sciences, 7(3), 134-140. Leroy, S. (2009). Why is it so hard to do my work? The challenge of attention residue when switching between work tasks. Organizational Behavior and Human Decision Processes, 109(2), 168-181.
In Lifeline. Lifeline replaces a separate calendar, todo list, tracker, and notes app precisely to remove these switches. Everything lives on one timeline, so moving from plan to record to note isn't a context switch at all. The same principle shapes navigation inside the app: switching views is designed to cost a glance, not a reorientation.
What we don't claim
Good intentions alone do not change behaviour - they translate into action only about half the time (Sheeran & Webb, 2016, Social and Personality Psychology Compass). Seeing your data is the first step, not the whole staircase. Lifeline gives you an accurate record and an honest mirror; what you do with it is yours.