Comparison

Relix Health vs Cycl

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

Head to head
About

Relix Health

This app helps you track medications and supplements, estimating what's still in your system in real-time. It provides insights into your intake patterns and helps you build healthy habits with personalized goals and reminders. Your health data is kept private on your device.

Highlights
  • Real-time system level estimation
  • Personalized 24-hour level tracking
  • Monthly intake pattern analysis
  • Goal setting for daily habits
  • Scheduled dose reminders
  • On-device private data storage
Features
Read full description

Relix is a simple caffeine log. Tell it what you drank and when, and it estimates how much caffeine may still be in your system now and at bedtime. Pick coffee, espresso, tea, an energy drink or whatever you had. Common serving sizes are one tap away. The home screen shows two numbers: an estimate of the caffeine in your system right now, and an estimate of what will be left when you go to bed. Below them, a chart shows your estimated caffeine level rising and falling over the day. If you add your age, weight and sex, the estimate is adjusted for them. Everyone metabolizes caffeine differently, so treat the numbers as a rough guide and not a measurement. Your caffeine log stays on your device, and you can export a backup whenever you like. IMPORTANT Relix is not a medical device and is not medical advice. All caffeine levels in the app are theoretical estimates for informational purposes only. They are not measurements and may not reflect what is actually in your body. Relix does not diagnose, treat, cure or prevent any condition, and it should never be used to decide how much caffeine is safe for you or when to take it. If you are pregnant, have a health condition, take medication, or have questions about caffeine, talk to a healthcare professional. Relix is intended for adults 18 and older. SUBSCRIPTION Relix requires a subscription. Payment is charged to your Apple ID when you confirm your purchase. Your subscription renews automatically unless you cancel at least 24 hours before the end of the current period. You can manage or cancel it in your App Store account settings. This app uses Apple's standard Terms of Use for auto-renewable subscriptions (https://www.apple.com/legal/internet-services/itunes/dev/stdeula/). Terms of Service: https://relixhealth.com/#terms Privacy Policy: https://relixhealth.com/#privacy

About

Cycl

This app personalizes your daily supplement intake based on your menstrual cycle phase. It offers cycle-aware scheduling, conflict detection for interactions, and phase-adaptive recommendations. Track your doses with reminders for a smarter approach to self-care.

Highlights
  • Cycle-aware supplement scheduling
  • Supplement interaction conflict detection
  • Phase-adaptive recommendations
  • Dose tracking with reminders
  • Personalized daily supplement stack
Features
Read full description

Your cycle shapes how your body responds to everything, including the supplements you take. Cycl is the first supplement management app built around your menstrual cycle, personalizing your daily stack based on your current phase. Not a period tracker. Not a supplement store. A smarter way to take care of yourself. WHAT CYCL DOES - Cycle-aware scheduling: Your supplement plan updates automatically across four daily time slots as your phase changes. - Conflict detection: Cycl flags supplement interactions in your stack before you take them. - Phase-adaptive recommendations: Get suggestions tuned to where you are in your cycle. - Dose tracking with reminders: Stay consistent without thinking about it. Simple onboarding. Enter your cycle info, build your stack, and your personalized plan is ready in minutes. We also offer premium features with subscriptions, such as a smarter supplement stack generator and in-depth women's health supplement insights, to help you get the most out of your supplement routines. Cycl is not a medical app and does not provide medical advice. Always consult a healthcare professional before making changes to your supplement routine. Terms of Conditions: https://www.cyclsupp.app/tos Privacy Policy: https://www.cyclsupp.app/privacy

Screenshots

Relix Health4 screens
Cycl4 screens

Verdict

The call

The clearest difference is monetization model: Relix Health at free against Cycl's freemium. Relix Health also leads on iOS requirement (18.0 vs 26.0). Cycl's advantage is update cadence (every 5 days vs fortnightly). On price, rating, review sentiment and ratings volume 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. Relix Health sells 3 in-app purchases, starting at $9.99 per month and Cycl sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Relix Health against 5.0 for Cycl. Both are backed by a comparable volume of ratings — 5 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Relix Health ships an update fortnightly, Cycl every 5 days. Both last shipped on October 31, 2026.

Scorecard3 real differences · 7 level
Relix Health versus Cycl: the parameters behind the verdict, then further details
ParameterRelix HealthCycl
PriceFreeFree
Rating5.0 (5 ratings)5.0 (4 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings5 — better4
Update frequencyFortnightlyEvery 5 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree — betterFreemium
DevicesiPhoneiPhone
Requires iOS18.0 — better26.0
Further details — not scored
Size16 MB20 MB
Age rating17+17+
DeveloperDean CarrollJustin Shieh

Customer experience

Relix Health

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Cycl

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

Relix Health

Subscriptions2
  • Pro (monthly)14 Days trial$9.991 Month
  • Pro (annual)14 Days trial$59.991 Year
One-time1
  • Pro (Lifetime)$39.99
2 purchases

Cycl

Subscriptions2
  • Cycl Pro - Monthly3 Days trial$4.991 Month
  • Cycl Pro - Yearly3 Days trial$29.991 Year

Questions

Is Relix Health free?
Relix Health is free to download, with in-app purchases available.
Is Cycl free?
Cycl is free to download, with in-app purchases available.
Which has better reviews, Relix Health or Cycl?
Relix Health and Cycl are both rated 5.0 out of 5 on the App Store, from 5 and 4 ratings respectively.
Do Relix Health or Cycl have ads?
Neither Relix Health nor Cycl shows ads.
Which is updated more often, Relix Health or Cycl?
Relix Health ships an update fortnightly, and Cycl every 5 days. Most recently, Relix Health was updated on October 31, 2026 and Cycl on October 31, 2026.

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