Comparison

CycleAI vs Vespera Moon Cycle

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

Head to head
About

CycleAI

Features
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CycleAI is the free period and cycle tracker built on real hormone science โ€” not guesswork. Track your period, ovulation, and fertile window with predictions that get sharper the more you log. Every day of your cycle is mapped, from the follicular rise to the luteal wind-down, so you always know what your body is doing and why. WHAT MAKES CYCLEAI DIFFERENT โ€ข AI Chat, 24/7 โ€” Ask anything about your cycle, symptoms, or fertility and get real, judgment-free answers grounded in your own data. Not a chatbot script โ€” an assistant that actually knows your cycle. โ€ข Life Planner โ€” Type any date, past or future, and see exactly how your cycle will shape it. Time job interviews, first dates, and presentations around your best days. โ€ข Doctor-Ready Reports โ€” Generate a clear PDF summary of your cycle history, symptoms, and patterns in one tap. Walk into your next appointment prepared, not guessing. โ€ข Full Symptom Tracking โ€” Log mood, energy, cramps, sleep, and more. Tap any date on your calendar to see exactly what your body was telling you. โ€ข For Partners โ€” Help the people who care about you understand your cycle too, without ever compromising your privacy. PRIVATE. FREE. NO CATCH. CycleAI is free forever โ€” no paywall, no premium tier hiding the features that matter. Your health data stays private, always. Whether you're trying to conceive, just trying to understand your own patterns, or tired of apps that oversimplify your body, CycleAI gives you the full picture โ€” every symptom, every day, mapped.

About

Vespera Moon Cycle

Features
Read full description

Vespera is a period and cycle tracker inspired by the phases of the moon โ€” a gentle companion for understanding your body's rhythm. Thoughtful predictions Based on your cycle data, Vespera predicts your next period, ovulation day and fertile window, shown clearly on the calendar with continuous bars and moon phases. Swipe ahead to see months in advance. Daily logging Tap to record period start/end, flow, mood, symptoms and notes, and mark custom events like appointments, medication or exercise. Cycle insights Review your cycle length, regularity and body trends with simple charts to understand yourself better. Luna, your companion A gentle daily note that walks with you through each phase of your cycle. Always with you Apple Watch app, home-screen widgets and complications keep the essentials a glance away. Private by design Your period and health data stay on your device and can optionally sync with Apple Health โ€” never uploaded to our servers. Enable a Face ID app lock to protect your private records. Gentle reminders Period, ovulation, daily-log and bedtime reminders โ€” entirely up to you. Subscription Vespera offers monthly, quarterly and yearly plans that unlock advanced prediction, full statistics, data export, multiple reminders, themes and app lock. Subscriptions renew automatically and can be managed or cancelled anytime in your App Store account settings. Be gentle with your body. (Terms of Use / EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ (Privacy Policy): https://jack821105.github.io/Privacy/privacy.html

Screenshots

CycleAI4 screens
Vespera Moon Cycle4 screens

Verdict

The call

The clearest difference is in-app purchases: CycleAI at none against Vespera Moon Cycle's 3. CycleAI also leads on device support (3 vs 1) and iOS requirement (15.6 vs 17.0). Vespera Moon Cycle's advantage is ads (none vs shown). On price there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Vespera Moon Cycle sells 3 in-app purchases, starting at $2.99 per month. CycleAI asks for nothing beyond the download.

Scorecard4 real differences ยท 1 level
CycleAI versus Vespera Moon Cycle: the parameters behind the verdict, then further details
ParameterCycleAIVespera Moon Cycle
PriceFreeFree
AdsYesNo โ€” better
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad, iPod โ€” betteriPhone
Requires iOS15.6 โ€” better17.0
Further details โ€” not scored
Size60 MB6 MB
Age rating17+4+
DeveloperZain HabibSHU TZU HSAING

In-app purchases

None

CycleAI

No in-app purchases

3 purchases

Vespera Moon Cycle

Subscriptions3
  • Premium Monthly$2.991 Month
  • Premium Quarterly$6.993 Months
  • Premium Yearly$19.991 Year

Questions

Is CycleAI free?
CycleAI is free to download, with no in-app purchases.
Is Vespera Moon Cycle free?
Vespera Moon Cycle is free to download, with in-app purchases available.
Do CycleAI or Vespera Moon Cycle have ads?
CycleAI shows ads; Vespera Moon Cycle does not.

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