Cognitive shuffling apps, compared

Which cognitive shuffling apps are there?

Every iPhone app we found on the US App Store that describes itself as cognitive shuffling, with what its listing said on 28 September 2026, oldest first.

mySleepButton is the most established by a distance: on the App Store since 2014, and on the day we checked, the only one with more than a handful of ratings. Most of the others arrived in the last eighteen months.

What actually differs between them?

• What they read. Nearly all read single words — the research form, serial diverse imagining. mySleepButton reads short descriptions. Sheeps reads scenes built to the same rules, with no plot, and its Radio mode reads single words.
• Pace. The trial of the technique played a word about every eight seconds. Several apps let you set the gap, and so does Sheeps’ Radio; in its stories the pauses grow on their own, from about two seconds to about seven, as the story goes on.
• Sound underneath. Nem Sleep, eazynap and No Insomnia offer music or ambient sound under the words. Sheeps plays nothing under the voice, on purpose: anything playing underneath is one more thing to listen to.
• Voices. Shuffle Sleep says its words are recorded by human narrators; several apps offer a choice of voice. Sheeps’ narrators are synthetic voices, chosen for a low, even delivery.
• What you can leave out. Shuffle Sleep lets you switch individual words off. Sheeps takes an avoid list — spiders, deep water, anything you type — and keeps those words and their listed synonyms out of every story it writes for you; the shared Browse shelf is not filtered by your list.
• Languages. English everywhere; Japanese in mySleepButton, Shuffle Sleep and eazynap; German in Sleep Fast and Sheeps; eight languages in Sleep Fast.
• How you pay. Free with packs (mySleepButton), free with a premium tier, a one-off price (Sleep Fast), or a subscription (Sheeps).

Which one should you choose?

• For the technique from its source: mySleepButton, which is Beaudoin’s own.
• For single words read by a human voice, or in Japanese: Shuffle Sleep, or eazynap.
• For another language: Sleep Fast covers eight; Sheeps covers German.
• If single words feel too sparse, and the worries rush back into the gaps: something denser — descriptions, or scenes, which is where Sheeps sits.
• If you want nothing to pay: no app at all. The do-it-yourself method needs only a word, and a word list read into a voice memo does what most of these apps do.

The kinds of guided shuffling, and who each suits, are covered in cognitive shuffling, read to you.

Do the apps’ claims hold up?

Read the listings with care — ours included. Several describe the technique as scientifically validated or promise faster sleep. The evidence is thinner: one trial of the word-by-word form, in university students, improved how wound up they felt at bedtime, how hard they tried to sleep, and how well they rated their sleep, and reported no figure for how quickly they fell asleep. Sheeps’ own listing leads with a number from a different study of a different technique.

What cognitive shuffling research actually shows sets out both studies, and where the numbers in the listings come from. None of these apps — Sheeps included — has itself been clinically tested, as far as any listing says.

How this comparison was made

Everything about the other apps comes from their own US App Store listings on 28 September 2026: name, maker, release date, languages, price to download, and what the description says the app does. We have not used each of them at length, and we do not rate them. Listings change; if something here has gone out of date, the address in the Imprint reaches a person, and we will correct it.

Sheeps is made by the people who wrote this page. Where the table describes it, it describes what the app does, not what we hope it does.