CarbSync vs Phase
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CarbSync
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Master your macros. Protect your privacy. CarbSync is the ultimate tactical macro tracker designed for speed, precision, and 100% local data security. No accounts, no forced cloud syncs, and no subscriptions to start tracking. Whether you are cutting, bulking, or maintaining, carb cycling is a proven strategy. But tracking it shouldn't slow you down. CarbSync features a striking, dark-mode tactical HUD that gets out of your way and lets you log your food at lightning speed. WHY CARBSYNC? TACTICAL HUD INTERFACE Experience a dark, high-contrast dashboard that delivers your daily TDEE and macro targets at a single glance. No cluttered menus, just pure data. LIGHTNING FAST LOGGING Built for speed. Log your meals and macros in seconds, not minutes. Spend less time on your phone and more time on your fitness goals. SMART CARB CYCLING Easily switch between high, medium, and low carb days to perfectly match your training schedule and optimize your metabolism. 100% PRIVATE & LOCAL (ZERO CLOUD) Your health data belongs strictly to you. CarbSync stores everything directly and securely on your device. We require no account registration, we don't sync to the cloud, and we will never sell your data. Download CarbSync today and take absolute control of your nutrition.
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.
- 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
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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
Screenshots
Verdict
The clearest difference is in-app purchases: CarbSync at none against Phase's 6. On price, ads, device support and iOS requirement 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. Phase sells 6 in-app purchases, starting at $0.99 per 7 days. CarbSync asks for nothing beyond the download.
| Parameter | CarbSync | Phase |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (4 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 4 — better |
| Update frequency | — | Every 5 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | 文权 刘 | Youssef Ismaili |
In-app purchases
CarbSync
No in-app purchases
Phase
- Phase Pro$0.997 Days
- Phase Pro$5.991 Year
- Lifetime Phase Pro$1.99
- Pro$2.99
- Lifetime Pro$4.99
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- Phase Pro$9.99








