Comparison

s.a.d.e vs Ailyn

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

Head to head
About

s.a.d.e

Features
Read full description

s.a.d.e is designed to help you track your cycle with ease, know what to expect and when, and share the journey with the people you love if you choose to. TRACK YOUR CYCLE • Log your period days, flow intensity and symptoms • Note your mood, birth control method, discharge type and more • See personal predictions based on your past cycles WORKS WITH YOUR HEALTH DATA • Sync with Apple Health (HealthKit) • Import your last 90 days of period records for free and save new ones automatically WIDGETS AND QUICK LOG • Home Screen and Lock Screen widgets (the small widget is free) • One-tap period log from the widget button, Control Center or Siri SMART NOTIFICATIONS AND REMINDERS • Get notified as far ahead as you like before your period • Ovulation window, late period and PMS notifications (Premium) • Pill and vitamin reminders; the "Taken" button in the notification logs it for you INSIGHTS AND REPORT • Cycle length trends, regularity and your symptom patterns (Premium) • A PDF cycle report you can take to your doctor (Premium) PARTNER MODE • Invite your partner or a close friend with a pairing code • You decide what to share: days only, all details, or full Partner Mode • Your partner can see which phase you're in and support you with a small gesture • Pause sharing anytime with Ghost Mode YOUR PRIVACY COMES FIRST Your data is never sold or shared for advertising. Sharing is entirely in your control. With s.a.d.e Premium, you get access to all Partner Mode features, every widget size, insights, the doctor's report, advanced notifications and import of Apple Health history older than 90 days. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Ailyn

Features
Read full description

Women's body is not the same every week. Ailyn is built around that. Ailyn reads where you are in your menstrual cycle and shapes the whole day around it, the food that suits this week, the training your body can take, the rest it is asking for. One companion that changes with you, instead of one plan repeated every day. EVERYTHING STAYS ON YOUR IPHONE Ailyn runs on Apple's on-device intelligence. Your cycle, your journal, your moods. none of it is uploaded. There is no account to create and no server to send it to. Nothing leaves your device. TODAY Your cycle day and phase at a glance, with guidance written for the day you are actually having. Tap the ring to correct your dates any time, bodies do not read calendars. NOURISH Food matched to your phase. Iron while you are bleeding, steady energy through your follicular week, magnesium and slow carbohydrates when your luteal phase asks for them. MOVE Training that pushes when your body can and rests when it should. Strength through your follicular and ovulatory weeks, gentler movement when you need it. REFLECT Journal, breathe, and keep what you are grateful for. Write by hand or speak it , dictation runs on your iPhone. A wind-down flow for the end of the day. APPLE HEALTH Connect Apple Health and Ailyn starts from the cycle you have already logged, then keeps your dates accurate as they change. Sleep, steps, workouts, resting heart rate and HRV all feed the picture. It is optional, you can enter your dates by hand instead. SIRI "get today's insight from Ailyn ", Journal in Ailyn." "Log my period in Ailyn." "Start breathing in Ailyn." BUILT FOR A NATURAL CYCLE Ailyn predicts your phases from your period dates, which holds when your own hormones are running your cycle. On hormonal birth control, during pregnancy, or after menopause your phases will not line up — Ailyn tells you so plainly, and the journal, breathing, gratitude and reflections all still work. Ailyn is a wellness companion, not a medical device. It does not diagnose, treat or prevent any condition, and it is not contraception. Please talk to a clinician about your health.

Screenshots

s.a.d.e4 screens
Ailyn4 screens

Verdict

The call

The clearest difference is in-app purchases: Ailyn at none against s.a.d.e's 2. Ailyn also leads on update cadence (every 2 days vs every 5 days). s.a.d.e's advantage is iOS requirement (18.0 vs 26.0). On price, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. s.a.d.e sells 2 in-app purchases, starting at $4.99 per month. Ailyn asks for nothing beyond the download.

UpkeepUpdate frequency

s.a.d.e ships an update every 5 days, Ailyn every 2 days. Both last shipped on October 31, 2026.

Scorecard3 real differences · 3 level
s.a.d.e versus Ailyn: the parameters behind the verdict, then further details
Parameters.a.d.eAilyn
PriceFreeFree
Update frequencyEvery 5 daysEvery 2 days — better
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, iPad — betteriPhone
Requires iOS18.0 — better26.0
Further details — not scored
Size37 MB22 MB
Age rating12+4+
DeveloperERDINC SARIAnkita Satpathy

In-app purchases

2 purchases

s.a.d.e

Subscriptions2
  • Monthly Premium$4.991 Month
  • Annual Premium$49.991 Year
None

Ailyn

No in-app purchases

Questions

Is s.a.d.e free?
s.a.d.e is free to download, with in-app purchases available.
Is Ailyn free?
Ailyn is free to download, with no in-app purchases.
Do s.a.d.e or Ailyn have ads?
Neither s.a.d.e nor Ailyn shows ads.
Which is updated more often, s.a.d.e or Ailyn?
s.a.d.e ships an update every 5 days, and Ailyn every 2 days. Most recently, s.a.d.e was updated on October 31, 2026 and Ailyn on October 31, 2026.

Other comparisons