Flymark vs Selin
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Flymark
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Organizing a dance competition can be a tough task—especially if you're a first time event planner. There are so many challenges to overcome before you successfully pull it off. But never mind those problems… Flymark is here to help people organize dance competitions!
Selin
Track your menstrual cycle, predict periods and ovulation, and log symptoms and moods. Offers personalized reminders and educational health insights. Helps understand your cycle patterns and plan ahead.
- Period tracking
- Ovulation prediction
- Symptom and mood logging
- Personalized reminders
- Cycle history analysis
- Educational health articles
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Track your period, understand your menstrual cycle, and plan ahead with Selin. See estimated upcoming periods and ovulation dates, keep a clear period calendar, and record symptoms, moods, and notes in one app. PERIOD TRACKER & MENSTRUAL CALENDAR Log your period dates and review your cycle history. See estimated upcoming periods, track cycle length, and keep your calendar organized. OVULATION TRACKER & FERTILITY CALENDAR View estimated ovulation days and fertile windows alongside your period calendar. Use these estimates to understand cycle patterns when planning for pregnancy. SYMPTOMS, MOODS & NOTES Record symptoms such as cramps and bloating, keep notes, and track mood changes throughout your menstrual cycle. IRREGULAR PERIODS & CYCLE HISTORY Review changes in period timing and cycle length over time, including irregular cycles. Your logged history stays easy to find in one place. PERSONALIZED REMINDERS Set reminders for your period, estimated ovulation, contraceptive pill routine, appointments, and other dates that matter to you. MULTIPLE CALENDARS Create and manage multiple calendars, with records and reminders organized in one app. MENSTRUAL HEALTH INSIGHTS Explore educational articles about periods, fertility, contraception, and reproductive health. Ask general questions through Selin's virtual assistant. YOUR CYCLE, EASIER TO UNDERSTAND Selin makes daily period tracking simple, whether you're just getting started or want a clearer view of your history. Download Selin and start tracking. Cycle and fertility predictions are estimates and may vary. Do not use Selin as a contraceptive method. Selin provides general educational information and is not a substitute for medical advice. Consult a qualified healthcare professional if you have health concerns. Privacy Policy: https://selin.app/privacy-policy/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Flymark at none against Selin's 2. Flymark also leads on ads (none vs shown). Selin's advantage is update cadence (weekly vs every 3 months) and iOS requirement (13.0 vs 15.6). On price 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
Both are free to download. Selin sells 2 in-app purchases, starting at $7.99 per month. Flymark asks for nothing beyond the download.
Flymark ships an update every 3 months, Selin weekly. Both last shipped on November 3, 2026.
| Parameter | Flymark | Selin |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.3 (10 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 10 — better |
| Update frequency | Every 3 months | Weekly — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 28 MB | 57 MB |
| Age rating | 4+ | 17+ |
| Developer | Volodymyr Bilyachat | Tech Brit, Inc |
In-app purchases
Flymark
No in-app purchases
Selin
- 1 month3 Days trial$7.991 Month
- 1 year7 Days trial$47.951 Year









