Sleep Cycle Tracker vs CarcinogenX
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sleep Cycle Tracker
Unwind with sleep sounds, bedtime stories, and wind-down routines. Log your sleep, explore insights from Apple Health, and monitor nighttime sounds. Offers free and premium content for a personalized sleep experience.
- Sleep sounds and white noise
- Bedtime stories and routines
- Sleep journaling and mood logging
- Apple Health sleep insights
- Nighttime sound monitoring
- Offline generated noise
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Unwind with sleep sounds and bedtime stories. Build a wind-down routine, log your night, and explore available sleep insights from Apple Health with Harmoni. SOUNDS FOR YOUR EVENING Explore nature sounds and white, pink and brown noise. Layer sounds, adjust volumes, save favorites and set a sleep timer. Generated noise works offline; other audio needs a connection or a previously cached file. STORIES AND WIND-DOWN ROUTINES Choose a track from illustrated story and soundscape collections. Set your sleep goal and schedule, then follow bedtime activities at your own pace, with optional reminders. YOUR SLEEP JOURNAL Log bedtime, wake time, sleep quality, wake-ups and morning mood. Add a reflection and revisit your entries. Manual check-ins receive an estimated score based on your answers; they do not measure sleep stages. OPTIONAL APPLE HEALTH INSIGHTS See available sleep records, calculated scores and stage details. Stages require compatible data in Apple Health, such as recordings from an Apple Watch. Missing measurements are shown as unavailable. NIGHTTIME SOUND SUMMARIES With microphone permission, monitor sound levels and review detected sound disturbances. Only summaries are saved, not audio recordings. This feature does not identify snoring or diagnose sleep conditions. Start without entering a password using an automatic account. Optional sign-in helps you keep your account across devices. Free and premium content is available. Some sounds and collections require Harmoni Premium; purchase options and current prices are shown in the app. The app interface is currently in English. Stories are not available in every language. Harmoni is a wellness app, not a medical device. Scores are estimates, not diagnoses or treatments. Privacy Policy: https://www.relaxingharmony.app/privacy Terms of Use: https://www.relaxingharmony.app/terms Support: https://www.relaxingharmony.app/contact
CarcinogenX
Identify harmful carcinogens in everyday products to make safer choices. This tool empowers users with knowledge for healthier living, offering an innovative and user-friendly experience. Always consult a doctor for medical decisions.
- Carcinogen identification
- Product safety analysis
- Healthier living guidance
- User-friendly interface
- Informed purchasing decisions
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Discover healthier living with CarcinogenX, your essential tool for identifying harmful carcinogens in everyday products. Designed to empower users with knowledge, this app combines innovative features and a user-friendly experience to help you make safer choices for yourself and your loved ones. Disclaimer: Seek a doctor’s advice in addition to using CarcinogenX and before making any medical decisions. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: Sleep Cycle Tracker at monthly against CarcinogenX's every 2 months. On price, rating, ratings volume and ads 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. Sleep Cycle Tracker sells 3 in-app purchases, starting at $1.99 per month and CarcinogenX sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for Sleep Cycle Tracker against 5.0 for CarcinogenX. Both are backed by a comparable volume of ratings — 1 and 2 respectively.
Sleep Cycle Tracker ships an update monthly, CarcinogenX every 2 months. The most recent releases landed on November 5, 2026 and November 4, 2026 respectively.
| Parameter | Sleep Cycle Tracker | CarcinogenX |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (2 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 | 2 — better |
| Update frequency | Monthly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Freemium |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 14 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Ready Apps LLC (WA) | Kornerstone Industries |
Customer experience
Sleep Cycle Tracker
CarcinogenX
In-app purchases
Sleep Cycle Tracker
- Monthly Subscription$1.991 Month
- Yearly Subscription7 Days trial$9.991 Year
- Lifetime subscription$19.99
CarcinogenX
- Monthly Subscription$3.991 Month
- Yearly$35.991 Year
- Lifetime$69.99
Questions
Is Sleep Cycle Tracker free?
Is CarcinogenX free?
Which has better reviews, Sleep Cycle Tracker or CarcinogenX?
Do Sleep Cycle Tracker or CarcinogenX have ads?
Which is updated more often, Sleep Cycle Tracker or CarcinogenX?
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