Period Tracker vs Calla
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Period Tracker
Track your menstrual cycle, predict ovulation, and monitor pregnancy progress. Offers daily wellness tools, guided exercises, and an AI chat assistant for personalized insights and support.
- Menstrual cycle prediction
- Ovulation and fertile window calculator
- Pregnancy week-by-week updates
- Symptom and mood logging
- AI chat assistant for insights
- Guided breathing exercises
- Customizable reminders
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Period Tracker: Ovulation Flow: Your Complete Wellness Companion Empower your health journey with Period Tracker: Ovulation Flow. Whether you are tracking your menstrual cycle, planning a pregnancy, or monitoring your baby’s growth, our app provides the tools you need for every stage of womanhood. Menstrual Cycle & Fertility Tracker • Period Calendar: Accurately predict your next period, flow days, and PMS symptoms. • Ovulation Calculator: Identify your fertile window and peak ovulation days to support your family planning goals. • Symptom & Mood Log: Track over 30+ symptoms, including cramps, headaches, and energy levels, for personalized health insights. • Smart Reminders: Never miss a beat with custom alerts for birth control pills, medication, and hydration. Pregnancy Tracker & Baby Development • Week-by-Week Updates: Stay informed with detailed articles on your body’s changes and baby’s growth milestones. • Fruit Size Comparison: Visualize your baby’s size with delightful fruit-themed graphics. • Due Date Calculator: Manage your pregnancy timeline with a comprehensive pregnancy calendar. Daily Wellness & Lifestyle Tools • Exercise & Fitness: Access gentle wellness routines designed for general activity and staying active throughout your cycle. • Nutrition & Hydration: Improve your lifestyle with balanced meal suggestions and a smart water tracker. • Daily Affirmations: Boost your mental well-being with motivational quotes and positive thinking. Mindfulness & Support • AI Chat Assistant: Get instant answers and supportive information about your cycle and app features. Our AI is focused specifically on helping you understand your period tracking data and wellness trends. • AI Privacy Assurance: Your conversations with the AI Chat Assistant are not stored or saved. All interactions are processed securely and are not retained, ensuring your privacy at all times. (Note: The AI does not provide medical advice or mental health counseling; for all health-related concerns, always consult your doctor.) • Breathe & Relax: Reduce stress with guided breathing exercises designed to support relaxation and ease PMS discomfort. Why Choose Us? • Privacy First: Your health data is encrypted and secure. We never sell your personal information. • User-Friendly: An elegant, intuitive design that makes health tracking simple and stress-free. Medical Disclaimer Period Tracker: Ovulation Flow is a tool for general wellness and information purposes only and is not a medical device. • Not for Medical Use: This app should not be used for medical diagnosis, as a contraceptive method, or as a substitute for professional medical advice. For health-related questions, please consult your doctor. • AI Responses: Our AI Assistant provides general information only. It is not a medical professional. • Accuracy: Cycle and fertility predictions are estimates based on user input. Privacy Policy: https://sites.google.com/woxxin.com/woxxinsolution/home Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Calla
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Most period apps were built for adults trying to get pregnant. Calla wasn't. It's built for teens who just want to understand what's happening in their body - without the noise, the upsells, or the ovulation countdowns. Your data lives on your phone. No accounts required. No ads. No third parties, no data brokers, no advertisers. Optional parent share, if you want it. Privacy-first. Always. All your data stays on your phone. No accounts. No cloud. No ads. No data selling. Period. Built for how your body actually works Irregular cycles? That's normal, especially when you're starting out. Calla doesn't just assume a 28-day cycle - it learns your patterns and gives you predictions that actually make sense for your body. Track what matters to you Log your period, flow level, mood, energy, cramps, sleep, skin, focus, appetite, and activity. See how your cycle connects to how you feel day to day. Understand your cycle Get gentle, age-appropriate insights about each phase of your cycle - what's happening in your body and what to expect. Prep-day reminders Get a heads-up before your period is predicted to start so you're never caught off guard. Parent Mode Share a simple wellness signal with a parent or guardian - "all good" or "heads up" - without revealing any cycle details. Communication on your terms. Calla is not a medical app. It does not diagnose, treat, or prevent any medical condition. If you have health concerns, talk to a doctor.
Screenshots
Verdict
The clearest difference is in-app purchases: Calla at none against Period Tracker's 4. Calla also leads on ratings volume (4 vs 1). Period Tracker's advantage is rating (5.0 vs 4.8). On price, ads, device support and iOS requirement 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. Period Tracker sells 4 in-app purchases, starting at $4.99 per month. Calla asks for nothing beyond the download.
Period Tracker holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 1 and 4 respectively.
| Parameter | Period Tracker | Calla |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.8 (4 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 | 4 — better |
| Update frequency | Every 2 weeks | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 95 MB | 33 MB |
| Age rating | +4 | 12+ |
| Developer | Ankit Sutariya | Roxana Heitz |
In-app purchases
Period Tracker
- PeriodTracker Monthly Plan$4.991 Month
- PeriodTracker Offer$10.996 Months
- PeriodTracker Yearly Trial3 Days trial$19.001 Year
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- PeriodTracker Yearly$19.001 Year
Calla
No in-app purchases









