Comparison

Easlo Experiments vs SleepWindow

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Easlo Experiments

This app encourages an experimenter mindset for personal growth. Track new habits, routines, or products for a set duration, logging progress and observations. Review your trials to decide if they fit your life.

Highlights
  • Set custom experiment frequency and duration
  • Log progress with notes and photos
  • Home screen widgets for mindfulness
  • Assign reminders for experiments
  • Review and reflect on experiment outcomes
Features
Read full description

What if there’s a better way than blindly committing to goals and habits just because they’re recommended to us? By adopting the experimenter mindset, you can try new habits, routines, or products for a set number of days and see what actually works for you. Experiments helps you track these personal trials, letting you check in on your progress and log observations through notes or photos. At the end of your chosen duration, you can review and reflect on whether you want to continue with it. Key Features: · Set your own frequency and duration for each experiment. · Check in on your experiment and attach notes or photos. · Add home screen widgets to stay mindful of your ongoing experiments. · Assign reminders to your experiments for timely nudges. Experiment. Reflect. Repeat.

About

SleepWindow

Features
Read full description

SleepWindow helps you plan sleep timing around 90-minute sleep cycles. Pick a wake time and see when to go to bed — or tap "sleep now" to see when to set your alarm. Plan naps that end at the right stage. See a conservative caffeine cutoff for your target bedtime. Features • Bedtime calculator — pick your wake time, get ideal bedtime options • Wake-time calculator — tap "if I fall asleep now," get wake options • Nap planner — power nap, short nap, full-cycle nap • Caffeine cutoff — plan when to stop caffeine based on bedtime • Bedtime reminders — simple, reliable local reminders • Saved presets — quick access for workdays and weekends • 12-hour or 24-hour time, light or dark mode Privacy-first • No account, no sign-in • No cloud sync · anonymous, opt-out product analytics only • Works fully offline Pricing • Free forever: bedtime calculator, 3 wake-time calculations per day, one reminder, two saved presets • Premium Monthly — $2.99/month (auto-renewing): unlimited calculations, nap planner, caffeine cutoff, unlimited presets and reminders • Premium Yearly — $19.99/year (auto-renewing): the same premium features, billed annually • Premium Lifetime — $7.99 (one-time): the same premium features, paid once, kept forever Pick yearly to save vs. monthly, monthly to try premium month-to-month, or lifetime to unlock everything with a single purchase. Results are estimates for planning sleep timing. SleepWindow is not a medical device and does not diagnose, treat, or monitor any condition. Subscription details Payment will be charged to your Apple ID at confirmation of purchase. Subscriptions auto-renew unless canceled at least 24 hours before the end of the current period; renewal is charged within 24 hours of the period end. Manage subscriptions in your Apple ID Account Settings. Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://has-deploy.github.io/sleepwindow-website/privacy-policy.html

Screenshots

Easlo Experiments4 screens
SleepWindow4 screens

Verdict

The call

The clearest difference is update cadence: SleepWindow at every 6 days against Easlo Experiments's every 3 weeks. 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Easlo Experiments sells 1 one-off in-app purchase and SleepWindow sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Easlo Experiments ships an update every 3 weeks, SleepWindow every 6 days. The most recent releases landed on October 15, 2026 and October 7, 2026 respectively.

Scorecard1 real difference · 9 level
Easlo Experiments versus SleepWindow: the parameters behind the verdict, then further details
ParameterEaslo ExperimentsSleepWindow
PriceFreeFree
Rating4.6 (22 ratings) — better—
Positive reviews90.0% of reviews—
Number of ratings22 — better—
Update frequencyEvery 3 weeksEvery 6 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS17.016.0 — better
Further details — not scored
Size5 MB3 MB
Age rating4+4+
DeveloperEaslo Pte. Ltd.anthony mcmurtrey

In-app purchases

1 purchases

Easlo Experiments

One-time1
  • Experiments Pro$9.99
3 purchases

SleepWindow

Subscriptions2
  • SleepWindow Premium7 Days trial$1.991 Month
  • SleepWindow Premium7 Days trial$9.991 Year
One-time1
  • SleepWindow Lifetime Unlock$7.99

Questions

Is Easlo Experiments free?
Easlo Experiments is free to download, with in-app purchases available.
Is SleepWindow free?
SleepWindow is free to download, with in-app purchases available.
Do Easlo Experiments or SleepWindow have ads?
Neither Easlo Experiments nor SleepWindow shows ads.
Which is updated more often, Easlo Experiments or SleepWindow?
Easlo Experiments ships an update every 3 weeks, and SleepWindow every 6 days. Most recently, Easlo Experiments was updated on October 15, 2026 and SleepWindow on October 7, 2026.

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