mySleepButton vs CalSpark
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
mySleepButton
This app uses a "cognitive shuffle" technique to help users fall asleep by distracting their minds with imagery. It offers guided meditations and can be used with audio devices for a screen-free experience.
- Cognitive shuffle technique
- Guided imagery for sleep
- Affective body scan meditation
- Configurable meditation pack
- Audio playback on external devices
- Siri shortcuts
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mySleepButton® is a CogSci Apps® invention. Its purpose is to help you fall asleep with the "cognitive shuffle", as featured in the The New York Times, The Guardian, Forbes Magazine, Canadian Government’s Institute of Health Research, The BC Medical Journal online, Popular Science Magazine, Forbes Magazine ("disrupt all patterns and rest in blissful chaos"), LifeHacker ("surprisingly effective"), etc. It’s so easy: Just lie in bed, touch the “Put Me to Sleep” button, imagine the various descriptions it reads to you, and let yourself fall asleep… pleasantly. That is the Cognitive Shuffle! O, The Oprah magazine, calls mySleepButton “An easy little game to trick yourself to sleep.” The Guardian wrote: "My top recommendation remains the visualisation method known as the “cognitive shuffle”: download the MySleepButton app". Quartz says mySleepButton is “a drug-free sleep trick for your restless mind”. International Business Times of London says “mySleepButton App Hijacks Thoughts to Help Sleep”. Into mindfulness meditation? mySleepButton also contains a configurable "affective body scan" meditation pack. It taps into the brain's body maps. Still awake after the meditation? Instantly proceed to guided shuffled imagery. You can try mySleepButton for FREE! There's no subscription fee. Buy the pack(s) that you like, and shuffle your thoughts to sleep. The goal of mySleepButton is to keep your mind off your concerns while putting it in an imagery rich state conducive to sleep. mySleepButton can also be triggered with Air Pods and played on Apple's Home Pod (or other devices) if you don't want an iPhone or iPad in your bed room. It even has Siri shortcuts. So, why not enjoy a dreamy transition to sleep? “Shuffle Your Thoughts to Sleep” with mySleepButton.
CalSpark
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Log a meal from a photo in seconds. Then ask a coach that knows your day. CalSpark doesn't just count calories. Its AI coach uses your meals, calorie and macro targets, weight trend and activity, so its advice is about you, not generic tips. SNAP IT, DON'T SEARCH IT Point your camera at your food. CalSpark estimates what's on the plate and its calories, protein, carbs and fat. If the portion looks off, adjust it in a tap and it's logged. No endless databases. No weighing every ingredient. AN AI COACH THAT HAS SEEN YOUR DATA Ask anything: "Why am I always hungry at night?" "Is this enough protein?" "What should I eat before training?" Your coach sees your logs, your targets, your weight trend and your activity. It remembers what matters, like "vegetarian" or "bad knee, no running", so you never have to explain yourself twice. EAT AND TRAIN OUT WITH A PLAN Allow location and CalSpark finds real gyms, restaurants and parks near you. Location is used only when you search. It is never tracked in the background. Then it tells you what fits your day: which place to pick, what to order ("grilled fish and greens, skip the fries"), or how hard to train after a short night's sleep. Thinking about a dish? Ask whether it fits your remaining budget before you order. TARGETS THAT ADAPT Set a goal weight and a timeframe. CalSpark works out your daily calorie and macro targets from your height, weight, age, activity level and goal, then adjusts them as your weight moves. SEE THE WHOLE PICTURE - Daily rings for calories, protein, carbs and fat - Energy balance: calories in vs. calories burned - Weight trend across weeks and months - Steps and activity from Apple Health (read-only; CalSpark never writes to Health) - Your AI coach, every day, for your weight goal IN YOUR LANGUAGE English, Traditional Chinese, Simplified Chinese, Japanese, French, German, Spanish and Italian. SUBSCRIPTION CalSpark is a subscription app. After you create an account and set up your profile, CalSpark Premium unlocks photo meal logging, the AI coach, your full meal and workout history, health-flag personalisation and progress charts. New subscribers can start with a three-day free trial. Privacy Policy: https://calspark.cloud/privacy.html Terms of Use: https://calspark.cloud/terms.html CalSpark is a nutrition tracking tool, not a medical device. It does not diagnose, treat or prevent any condition. Food recognition and calorie estimates are approximations. Please speak to a qualified professional before making significant changes to your diet, particularly if you are pregnant or managing a medical condition.
Screenshots
Verdict
The clearest difference is update cadence: CalSpark at every 5 days against mySleepButton's every 5 months. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. mySleepButton sells 1 one-off in-app purchase and CalSpark sells 1 in-app purchase, starting at $24.99 per year. Whichever you choose, the download price is not the number that matters.
mySleepButton ships an update every 5 months, CalSpark every 5 days. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.
| Parameter | mySleepButton | CalSpark |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (212 ratings) — better | — |
| Positive reviews | 72.9% of reviews | — |
| Number of ratings | 212 — better | — |
| Update frequency | Every 5 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 45 MB | 61 MB |
| Age rating | 4+ | 12+ |
| Developer | CogSci Apps Corp. | Hung Tsan Yuen |
Bugs and requests
mySleepButton
Reported bugs
2 issues- App crashes after iOS updates
- Purchased content not restoring properly
Requested features
4 requests- More diverse content and voices
- Randomized word/scene order
- Support for additional languages
- Apple Watch app
CalSpark
Not enough reviews yet to summarise bugs or requests.
In-app purchases
mySleepButton
- Give thanks & support our R&D$9.99
CalSpark
- CalSpark Premium3 Days trial$24.991 Year









