Does online CBT help insomnia, or is it just another sleep app?

Structured digital CBT-I can help diagnosed insomnia. A US trial and a Norwegian comparison explain where it fits—and why sleep tips are different.

Prepared by PoshanSense · AI-assisted educational writing
Our sources and editorial approach · Not clinically reviewed

Research explained · Published 2021, 2025

If you have already dimmed the lights, bought a new pillow and stopped late coffee, another list of sleep tips can feel exhausting. The question is whether an online programme offers something meaningfully different.

What makes CBT-I different from bedtime advice?

CBT-I means cognitive behavioural therapy for insomnia. Its structured work addresses patterns of thinking and behaviour that can keep insomnia going. Sleep education explains useful habits; it does not necessarily provide the same treatment.

That distinction matters when comparing products. A calming soundtrack, a sleep tracker and a programme tested in people with diagnosed insomnia are three different things, even if each uses the word “sleep”. Evidence for one cannot be transferred to the others.

How much did the US programme help?

In the 2025 CrEDIT trial, the digital group scored about 2.4 points better on the Insomnia Severity Index at ten weeks. The uncertainty interval supported an average benefit. Time awake after first falling asleep was also lower, by around nine minutes.

But not every outcome improved clearly. The difference in time taken to fall asleep missed the trial's stricter threshold for its multiple primary comparisons, and total sleep time did not consistently improve. “Better insomnia symptoms” is a more accurate answer than “everyone slept longer and fell asleep faster”.

Participation also mattered. Only 124 of 168 people assigned the digital programme started it, compared with 165 of 168 assigned education. Missing outcome data were more common in the digital group. The analysis accounted for missingness statistically, but that cannot prove the experiences of everyone who stopped responding.

Does it replace seeing a therapist?

Not for everyone. A Norwegian trial randomized 101 clinic patients to digital or individual face-to-face CBT-I. At 33 weeks, face-to-face care produced better insomnia scores, and the researchers could not establish that the digital programme was sufficiently close in effectiveness. Completion was also much higher with face-to-face care.

The two trials answer different questions: better than education is not the same as equivalent to individual treatment. They also tested different digital programmes in different populations.

How should you approach the choice?

Start by distinguishing a difficult week from persistent insomnia. Continuing sleep difficulty with daytime consequences deserves assessment, especially if there may be another sleep disorder, mental-health condition or medication effect. More screen-based self-help is not always the answer.

NICE guidance describes a role for a specific evidence-based digital programme. It does not endorse every app with a sleep label. Availability, clinical suitability and support differ between countries and services.

Some CBT-I components change time in bed. Do not improvise a sleep-restriction regimen from a blog, particularly when daytime alertness is safety-critical or you have a condition needing specialist advice. Ask an appropriate clinician which route fits your circumstances.

CrEDIT was funded by Big Health, with additional public research support; several authors were employees, shareholders or advisers of the developer. This is educational writing, not a clinical review or an endorsement of a particular product.

Published 11 October 2026 · Sources checked 11 October 2026. Suggest a correction.