Comparison

Sleep Ledger vs Drift

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

Head to head
About

Sleep Ledger

Features
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A free, subjective sleep diary for your next appointment. Log two ratings in about 10 seconds each morning. Keep all your history and export CSV or text for free. Pro adds a printable diary PDF with a one-time purchase. YOUR OWN RATINGS Choose two 1โ€“5 ratings: sleep quality and how rested you feel on waking. These are your ratings, with no algorithmic sleep score. Energy, time to fall asleep, night awakenings, tags and notes are optional and can take longer. No sensor, Watch or Health connection is required. FREE: A 14-DAY DIARY FOR YOUR NEXT APPOINTMENT Record, backfill, edit and read your full diary. Browse by calendar or list. Night shift, daytime sleep and nap tags are optional; each wake day has one diary entry. See recorded days, gaps, lightweight week-over-week comparisons and basic tag comparisons when there are enough entries. Descriptive comparisons do not show cause and effect. Start with a 14-day view and preview your visit pack for free, including recorded days and gaps. Free recording continues beyond 14 days, and all saved history remains readable. CSV and plain text exports of your diary are free. Choose dates and whether to include notes. Basic widgets, StandBy, Control Center, Siri, Shortcuts, reminders and Watch check-ins are free on supported systems. PRO: A PRINTABLE DIARY FOR YOUR VISIT Preview your chosen dates before buying. Pro creates a clean, printable PDF with your ratings, optional details, missing-day coverage and available sleep context. Start with the past 14 days, or choose another period. Pro also adds 30-day trends, custom tags and amounts, combined tag filters and deeper diary insights. Your export choices are kept through purchase. This is a summary of your records, not a clinical report or a replacement for a clinician's requested diary. It can support a conversation about sleep or accompany CBT-I or sleep hygiene arrangements you already follow. Sleep Ledger does not provide a treatment course, prescription or diagnosis. ONE LIFETIME PURCHASE Pro is a one-time, non-consumable Lifetime purchase. No subscription or recurring charge. The app displays the full localized price before purchase. Existing Lifetime purchases remain valid and can be restored. No purchase page appears before your first entry. After three distinct recorded wake days, you may see one optional Pro reminder. Further offers follow a request for PDF or deeper analysis. Recording and reading your history remain free. OPTIONAL CONTEXT, YOUR CHOICE Apple Health is read-only. Connect it to view available sleep timing, estimated duration and time in bed alongside your ratings. Sleep Ledger never writes to Health. Saved sleep context can appear in exports; separately connected time in daylight and HRV do not enter your diary or exports. No readable samples means unavailable, not zero. LOCAL AND PRIVATE No account or automatic cloud sync. Your diary stays on your devices. Watch check-ins transfer to your paired iPhone and are retained on the Watch while the phone is unavailable. No ads, third-party analytics or tracking in the app. Apple verifies Pro purchases. Export files are generated on your iPhone and shared only when you choose. TERMS AND PRIVACY Terms: https://sleepledger.borealbit.com/terms/ Privacy: https://sleepledger.borealbit.com/privacy/ Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ HEALTH INFORMATION Sleep Ledger is for informational self-tracking. It is not a medical device and does not provide medical advice, diagnosis or treatment. Consult a qualified healthcare professional about health concerns.

About

Drift

Features
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Drift teaches the CBT-I techniques clinicians use โ€” a guided sleep-window plan you follow yourself, built from your own morning diary. Trackers measure your sleep. Drift is built around the intervention side: each week it reviews your diary and suggests how your in-bed window could move, using the published sleep-restriction titration rules (AASM clinical practice guideline; Edinger 2021), with a hard 6-hour minimum window and the full reasoning shown for every suggestion. NO FAKE SLEEP SCORE Your real sleep efficiency โ€” time asleep over time in bed โ€” charted against the 85% goal line from the published literature. No proprietary composite number, no grades. A 60-SECOND MORNING DIARY Apple Health pre-fills what it can (sleep stages, HRV, resting heart rate) so you confirm instead of typing. The diary accepts any schedule, including cross-noon and rotating shifts, and "not sure" is always an answer. BUILT FOR REAL SCHEDULES - Standard track for classic insomnia patterns - Shift-work track with a higher safety floor - Perimenopause track that doesn't penalise hot-flash wake-ups - Pain-aware track with gentler pacing READS APPLE HEALTH, NEVER WRITES TO IT Drift is read-only on Apple Health, so it can't alter or corrupt your existing health data. AUDIO NEVER LEAVES YOUR IPHONE On-device snore, cough, and sleep-talk detection stores only event labels โ€” never recordings. Plus audiogram-tuned pink, brown, white, and rain noise. SAFETY-FIRST BY DESIGN A real safety screener: bipolar disorder, seizure history, and untreated sleep apnea switch Drift to diary + education mode, where the window never narrows. Drowsy-driving warnings are built in, and the window never goes below 6 hours. AN HONEST FREE TIER The morning diary, your efficiency trend, stimulus-control education, your first computed window and your first weekly review โ€” free, forever. Drift Pro continues the weekly reviews and adds the coach, sound analysis, pink noise, and sleep stories. Cancel anytime: Restore and Manage Subscription are right inside the app. YOUR DATA IS YOURS Sign in with Apple, or keep a fully private on-device journal. CSV export is free. Delete everything, permanently, from inside the app. Drift is a private journal and educational tool, not a medical device. It teaches published CBT-I techniques but does not diagnose, treat, or cure any condition. If your sleep problems are severe or persistent, please talk to a clinician. Terms of Use: https://drift.keenshift.ai/terms Privacy Policy: https://drift.keenshift.ai/privacy

Screenshots

Sleep Ledger3 screens
Drift4 screens

Verdict

The call

Sleep Ledger and Drift are too close to call on the numbers: across 6 compared parameters โ€” price, update cadence, ads and in-app purchases among them โ€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Sleep Ledger sells 1 one-off in-app purchase and Drift sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Sleep Ledger ships an update every 3 weeks, Drift monthly. The most recent releases landed on November 15, 2026 and November 13, 2026 respectively.

ScorecardNo meaningful differences
Sleep Ledger versus Drift: the parameters behind the verdict, then further details
ParameterSleep LedgerDrift
PriceFreeFree
Update frequencyEvery 3 weeks โ€” betterMonthly
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, Apple WatchiPhone, iPad
Requires iOS17.0 โ€” better18.0
Further details โ€” not scored
Size26 MB6 MB
Age rating12+12+
DeveloperBorealbit Technology LimitedMitaanshu Agarwal

In-app purchases

1 purchases

Sleep Ledger

One-time1
  • SleepLedger Pro$2.99
2 purchases

Drift

Subscriptions2
  • Drift Pro Monthly$4.991 Month
  • Drift Pro Yearly$29.991 Year

Questions

Is Sleep Ledger free?
Sleep Ledger is free to download, with in-app purchases available.
Is Drift free?
Drift is free to download, with in-app purchases available.
Do Sleep Ledger or Drift have ads?
Neither Sleep Ledger nor Drift shows ads.
Which is updated more often, Sleep Ledger or Drift?
Sleep Ledger ships an update every 3 weeks, and Drift monthly. Most recently, Sleep Ledger was updated on November 15, 2026 and Drift on November 13, 2026.

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