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After a week of sleep diaries, propose a time-in-bed window from the person's averages and let them bargain up to a set limit, then reset it weekly. The app it sat in beat a waitlist; the negotiating itself was never tested.
38 of 74App users who ever committed to a negotiated window; 32 of those 38 stayed in bed longer than agreed on most nights. The whole Sleepcare app still beat a waitlist on insomnia severity (Horsch et al., 2015 trial).
Built from published experiments and company reports across several products. Nobody has checked the screens on a dated day, so read each number with the caveat printed beside it.
After a week of sleep diaries, propose a time-in-bed window from the person's averages and let them bargain up to a set limit, then reset it weekly. The app it sat in beat a waitlist; the negotiating itself was never tested.
Sleep restriction is described as the most effective part of CBT for insomnia, but it demands strong perseverance, and people who start self-help therapy enthusiastically often find it too demanding and stop (Horsch et al.).
This play is not tied to a full playbook. Use it for this decision alone.
The whole Sleepcare app beat a waitlist on insomnia and sleep efficiency.
SUPPORTINGWhat it does not show The app is a bundle; the effect cannot be attributed to the negotiable window or to sleep restriction alone. Waitlist control only; no placebo, active or fixed-window comparison. Self-report measures; no polysomnography. Sample of relatively mild insomnia with many exclusions, self-selected and mostly university educated, Android users only. The follow-up had no control group and was not imputed.
Mobile Phone-Delivered Cognitive Behavioral Therapy for Insomnia: A Randomized Waitlist Controlled Trial Horsch et al. · 2017
Most app users who committed to a window overran it.
SUPPORTINGWhat it does not show Descriptive adherence data from the app arm; no comparison with a fixed window. Deviation is computed from self-reported diaries. Measures adherence, not harm; the arm still improved against the waitlist (E1).
Mobile Phone-Delivered Cognitive Behavioral Therapy for Insomnia: A Randomized Waitlist Controlled Trial Horsch et al. · 2017
Negotiating was not linked to sticking with the window.
Use the play for this decision alone, or combine it with an existing product strategy after checking for conflicts.
Acute sleep restriction is associated with shorter sleep, more daytime sleepiness and slower reactions in the first weeks — a safety risk if the window is too tight.
Presenting research-trial insomnia outcomes as effects of a commercial app is a health claim that may draw app-store or regulatory review.
Users who decline or drop the restriction stay in a programme without its main component, which may deter them from seeking other help.
The window comes from self-reported diaries, so missing or wrong entries shift it.
Plus everything above, as plain text for your coding agent, with a short instruction on top: check the fit, say what the evidence doesn’t support, and adapt it rather than copy it. Paste it and you get an answer, no prompt to write.
One randomised trial of the Sleepcare app against a waitlist, and adherence data from its users · evidence reviewed 25 September 2026.
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Browse the playbooks ↗What it does not show The authors state the data do not support conclusions about whether negotiation improved adherence; no condition without negotiation existed. Combines randomized app users with waitlist users who received the app later.