Comparison

Phase vs Sleep Cycle Fix

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

Head to head
About

Phase

This app guides you through a personalized daily plan to gradually shift your sleep schedule. It provides timed nudges based on your local sunrise and sunset to help you achieve your desired bedtime and wake-up times.

Highlights
  • Personalized day-by-day sleep schedule
  • Science-backed daily nudges
  • Multiple sleep programs for different needs
  • Location-aware sunrise/sunset sync
  • Offline functionality
  • HealthKit integration
  • Home and Lock Screen widgets
Features
Read full description

Your sleep schedule is off. Phase shifts it back — one day at a time. Phase is a guided program that fixes your broken sleep schedule through small, progressive daily shifts. No vague advice. No endless tracking. Just a clear plan that moves your bedtime and wake time closer to your goal — 15 minutes at a time. Tell Phase when you currently sleep, when you want to sleep, and it builds a personalized day-by-day plan to get you there. HOW IT WORKS - Pick a program that fits your situation - Set your current and goal sleep times - Get a personalized day-by-day schedule - Follow science-backed daily nudges - Watch your sleep shift into place 6 SLEEP PROGRAMS Phase is not one-size-fits-all. Pick the program that matches your situation: - Sleep Schedule Reset — the original 14-day phase shift - Night Owl Fix — stop going to bed at 3 AM - Jet Lag Recovery — get back on local time fast - Weekend Drift Reset — fix the Sunday-night-to-Monday-morning gap - Shift Work Transition — adjust to a new work schedule - Early Riser Challenge — become a morning person in two weeks YOUR DAILY NUDGES Every day, Phase gives you timed nudges based on your schedule and your local sunrise and sunset: - Morning Light — get sunlight early to reset your internal clock - Caffeine Cutoff — stop caffeine at the right time so it does not interfere with sleep - Screen Dim — reduce blue light before bed to protect melatonin - Wind Down — start your pre-sleep routine at the right moment - Bedtime — hit the pillow at your new target time All nudge times adjust automatically as your schedule shifts forward each day. Toggle nudges on or off and fine-tune timing to fit your life. WIDGETS AND LIVE ACTIVITY - Home Screen and Lock Screen widgets for sun position, nudge checklist, bedtime countdown, and sleep stats - Bedtime Live Activity — a countdown on your Lock Screen and Dynamic Island as bedtime approaches - Bedtime alarm that rings through Silent Mode and Do Not Disturb WHAT MAKES PHASE DIFFERENT - A real program, not a tracker — a clear plan with a finish line - Location-aware — nudge times sync with your actual sunrise and sunset - Works offline — no account, no login, no cloud - Science-backed — based on circadian rhythm research - Beautiful Sun Arc — a visual map of your day showing light, nudges, and targets - Schedule exceptions — have an early flight? Adjust one day without breaking your plan - Takes 30 seconds to set up TRACK YOUR PROGRESS See your journey laid out. Check off each day. Build streaks. Get encouragement when you need it. Know exactly how far you have come and how close you are to your goal. HEALTHKIT INTEGRATION Phase reads your sleep, sunlight, exercise, and caffeine data from Apple Health to auto-verify nudges and show activity bars on your daily timeline. Phase never writes to HealthKit — your data stays yours. BUILT FOR FOCUS No charts. No dashboards. No social features. Phase does one thing and does it well — it fixes your sleep schedule. Your body has a clock. Phase helps you reset it. Terms of Use: https://www.theblackholecompany.com/termsConditions.html

About

Sleep Cycle Fix

Features
Read full description

ChronoReset helps you fix your sleep timing with a personalized day-by-day reset plan. Instead of forcing an all-nighter, waking up exhausted, or relying on willpower, ChronoReset uses chronotherapy to gradually shift your body clock toward the schedule you actually want. Whether your bedtime keeps drifting later, your mornings feel impossible, or your current routine no longer works, ChronoReset gives you a clear plan to follow each night. HOW CHRONORESET WORKS ChronoReset works with your natural circadian rhythm instead of fighting against it. Your sleep window moves by a small amount each day until you reach your target schedule. This helps your body adapt gradually, making the reset feel smoother and more sustainable. No all-nighters. No sudden sleep deprivation. No guessing when to go to bed. No confusing spreadsheets or manual planning. Just a simple nightly schedule that tells you when to sleep, when to wake, and how your reset is progressing. YOUR PERSONALIZED RESET PLAN Answer a few questions and ChronoReset builds your custom plan: • Set your current bedtime and wake time • Choose your target wake time • Pick your ideal sleep duration • Choose a gentle or aggressive pace • Decide whether to delay your bedtime or advance your wake time ChronoReset then creates a precise timeline showing every night of your reset, so you always know exactly what to do next. SMART REPLANNING Real life does not always follow the plan. If you wake up late, miss a target, or your actual sleep changes, ChronoReset can rebuild your plan around your real progress. Log your actual wake time and the app adjusts your schedule without making you start over. WIND DOWN SESSIONS ChronoReset includes guided 4-7-8 breathing sessions to help you relax before bed. Choose a 1, 3, or 5 minute session and use it as part of your nightly wind down routine. Each session is tied to your target bedtime so your reset feels structured and easier to follow. REMINDERS THAT MATCH YOUR PLAN ChronoReset gives you reminders based on your personal schedule, including: • Wind down alerts before bed • Wake check-ins each morning • Plan reminders to help you stay consistent PROGRESS TRACKING Track your reset with: • A clear progress ring • A full day-by-day timeline • Nightly sleep and wake targets • Completion celebration when you reach your goal You can also edit your plan at any time if your goal, pace, or sleep duration changes. BUILT FOR BETTER DAYS A consistent sleep schedule can improve more than just your nights. Better sleep timing can support: • More stable energy • Sharper focus • Better mood regulation • Improved workout recovery • Easier mornings • A more predictable daily routine ChronoReset is built for people who want a realistic way to reset their sleep without extreme routines. CHRONORESET PRO Unlock your full personalized reset plan and all premium features with ChronoReset Pro. ChronoReset Pro includes: • Full personalized reset plans • Smart replanning • Wind Down sessions • Progress tracking • Plan editing • Smart reminders • Full day-by-day timeline Subscriptions auto-renew unless cancelled at least 24 hours before the end of the current billing period. You can manage or cancel your subscription anytime in your App Store account settings. Privacy Policy: https://chronoreset.app/#/privacy Terms of Use: https://chronoreset.app/#/tos

Screenshots

Phase4 screens
Sleep Cycle Fix4 screens

Verdict

The call

The clearest difference is update cadence: Sleep Cycle Fix at every 2 weeks against Phase's every 5 weeks. Sleep Cycle Fix also leads on iOS requirement (15.1 vs 17.0). 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. Phase sells 6 in-app purchases, starting at $0.99 per 7 days and Sleep Cycle Fix 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

Phase ships an update every 5 weeks, Sleep Cycle Fix every 2 weeks. The most recent releases landed on October 16, 2026 and October 18, 2026 respectively.

Scorecard2 real differences · 8 level
Phase versus Sleep Cycle Fix: the parameters behind the verdict, then further details
ParameterPhaseSleep Cycle Fix
PriceFreeFree
Rating5.0 (4 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 5 weeksEvery 2 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.1 — better
Further details — not scored
Size32 MB45 MB
Age rating4+4+
DeveloperYoussef IsmailiBotGhost

In-app purchases

6 purchases

Phase

Subscriptions2
  • Phase Pro$0.997 Days
  • Phase Pro$5.991 Year
One-time4
  • Lifetime Phase Pro$1.99
  • Pro$2.99
  • Lifetime Pro$4.99
Show 1 more
  • Phase Pro$9.99
2 purchases

Sleep Cycle Fix

Subscriptions2
  • ChronoReset Monthly7 Days trial$4.991 Month
  • ChronoReset Yearly7 Days trial$19.991 Year

Questions

Is Phase free?
Phase is free to download, with in-app purchases available.
Is Sleep Cycle Fix free?
Sleep Cycle Fix is free to download, with in-app purchases available.
Do Phase or Sleep Cycle Fix have ads?
Neither Phase nor Sleep Cycle Fix shows ads.
Which is updated more often, Phase or Sleep Cycle Fix?
Phase ships an update every 5 weeks, and Sleep Cycle Fix every 2 weeks. Most recently, Phase was updated on October 16, 2026 and Sleep Cycle Fix on October 18, 2026.

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