The Calorie Tracker vs SleepFlow
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
The Calorie Tracker
This app helps you track your calorie intake, manage intermittent fasting schedules, and monitor your daily habits. It calculates macros, syncs with health data, and offers a community for support. Personalized plans and progress tracking are also included.
- Calorie and macro tracking
- Intermittent fasting timer
- Automatic step and activity syncing
- Weight and progress photo logging
- Daily to-do list
- Community feed
- Personalized calorie plans
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OnTrack is a calorie counter, fasting timer, and habit tracker built into one app. Here's everything inside. CALORIE COUNTER Log meals by photo*, barcode*, or search. Calories and macros (protein, carbs, fat) are calculated for you, so logging takes seconds. FASTING TIMER Pick a fasting window (16:8, 18:6, OMAD, or set your own) and start your fast. The timer keeps running in the background and we'll send a notification when your eating window opens. STEP TRACKER Your steps sync from Apple Health automatically. See your daily count and how it stacks against your goal without typing anything. CALORIES BURNED Active calories from your workouts and daily movement pull in from Apple Health. Subtract them from what you ate to see your real net for the day. WEIGHT LOG Track your weight over time and watch the trend. A single morning number doesn't tell you much, but the trend does. PROGRESS PHOTOS Take a weekly photo and watch the change month by month. Each photo is paired with the weight you logged that day so the comparison stays honest. DAILY TO-DOS A short list every morning: log today's weight, start your fast, take this week's progress photo. Small actions, every day, that compound. COMMUNITY Post an update, ask a question, share a recipe, or just lurk. The feed is people working on the same things you are. PERSONALIZED PLAN Answer a few questions about your goals, height, weight, and activity, and we'll set your calorie target and macro split. Adjust any number any time. APPLE HEALTH Steps, weight, workouts, and active calories sync from Apple Health automatically. NOTIFICATIONS Optional reminders to log your meals, end your fast, or check in for the day. Turn any of them off in settings. NOTE: OnTrack is not a medical device and we do not provide medical advice. Recommendations are suggestions only. Talk to a professional and do your own research before making changes to your diet, fasting routine, or training plan. *Photo and barcode food scanning require a subscription. Everything else is free. TERMS: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
SleepFlow
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Wake up less tired. SleepFlow is your AI sleep recovery coach. It builds one adaptive plan for tonight, based on your real evenings — not a generic eight-hour rule. WHY YOU'RE STILL TIRED You slept seven hours and still feel flat. Most sleep apps stop at a number. SleepFlow tells you what happened and what to do about it: fragmented sleep, high evening stress, caffeine after 2 PM, a phone that came to bed. Every morning you get the reason — and exactly one small move to protect tonight. TONIGHT, PLANNED AROUND TOMORROW Tell SleepFlow what tomorrow actually needs — a high-focus morning, an early meeting, a presentation, travel, or a recovery day. Your plan rebuilds itself: a suggested bedtime window, when to start winding down, and a routine sized to the night you can realistically give it. A WIND-DOWN THAT ADAPTS Grounding, guided breathing, body scan, and a slow sound fade-out. Choose Quick, Balanced, or Full — or tap "Make shorter" when the evening got away from you. Rest is enough. The plan never punishes you for a bad night. REST MODE A dimmed, quiet screen for lights-out. Set a sound and a fade-out, then slide to log your wake time in the morning. Nothing to fiddle with in the dark. YOUR MORNING, EXPLAINED - Sleep Score and Recovery Score, with a confidence level so you know how much to trust them - Tiredness Detective — the likely reasons behind today's energy - One Move Today — a single, specific action, never a checklist - Morning Reflection that feeds straight back into tonight's plan - Weekly report plus an AI weekly insight on what's actually shifting AWAKE AT 3 AM Open Sleep Rescue. A calm breathing session designed for the middle of the night, when the goal is rest — not forcing yourself back to sleep. SOUNDS TO DRIFT OFF Soft Rain, Brown Noise, Ocean, Forest, and Piano. Set a fade-out at 15, 25, 45, or 60 minutes so nothing plays all night. ASK YOUR COACH "Why am I tired today?" Your AI Sleep Coach answers using your own sleep profile, your recent nights, and your reflections — not generic advice from a search engine. YOUR DATA STAYS YOURS Export or delete your data at any time. AI personalization is optional and can be switched off. The microphone is used only to let the rest visual react to ambient sound — no audio is ever recorded, saved, or sent anywhere. SleepFlow supports healthy sleep habits. It does not diagnose or treat medical conditions and is not a substitute for professional medical advice. SLEEPFLOW PREMIUM - Unlimited AI Sleep Coach conversations - Deeper, personalized sleep insights - Offline audio playback and routines $9.99 per month. Payment is charged to your Apple ID at confirmation of purchase. The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscription in your account settings in the App Store after purchase. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Questions? admin@aisleepflow.com
Screenshots
Verdict
The clearest difference is in-app purchases: SleepFlow at none against The Calorie Tracker's 4. SleepFlow also leads on ads (none vs shown) and iOS requirement (15.0 vs 17.0). On price 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. The Calorie Tracker sells 4 in-app purchases, starting at $9.99 per month. SleepFlow asks for nothing beyond the download.
| Parameter | The Calorie Tracker | SleepFlow |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (66 ratings) — better | — |
| Number of ratings | 66 — better | — |
| Update frequency | Every 2 days | — |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 39 MB | 54 MB |
| Age rating | 4+ | 17+ |
| Developer | Implicit Marketing INC | AVE Global LLC |
In-app purchases
The Calorie Tracker
- Monthly Trial3 Days trial$9.991 Month
- Monthly$9.991 Month
- Annual Trial3 Days trial$49.991 Year
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- Annual$49.991 Year
SleepFlow
No in-app purchases
Questions
Is The Calorie Tracker free?
Is SleepFlow free?
Do The Calorie Tracker or SleepFlow have ads?
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