Flu vs Iris
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Flu
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Flu-ir é o app de autocuidado feito para mulheres que querem transformar sua rotina com hábitos saudáveis e acompanhar sua saúde de forma completa e inteligente. HÁBITOS INTELIGENTES Crie hábitos personalizados, marque com um toque e acompanhe suas sequências. Lembretes no horário certo para você nunca esquecer. SAÚDE FEMININA COMPLETA Acompanhe seu ciclo menstrual, fases hormonais e sintomas diários. Suporte completo para quem usa DIU, implante ou injeção — o app se adapta a você. MENOPAUSA E PERIMENOPAUSA Módulo dedicado com rastreamento de ondas de calor, insônia, humor e muito mais. Terapia de Reposição Hormonal (TRH) integrada. PROGRESSO QUE INSPIRA Estatísticas semanais e mensais, streaks motivacionais e gráficos bonitos que mostram o quanto você já evoluiu. RECURSOS: • Hábitos personalizados com cores e emojis • Check-in diário de humor, energia e estresse • Ciclo menstrual com previsão inteligente • Suporte a DIU, implante, pílula e mais • Módulo de menopausa e perimenopausa • Estatísticas detalhadas e compartilháveis • Lembretes e notificações personalizadas • Tema claro e escuro • Upload de foto de perfil PREMIUM Desbloqueie hábitos ilimitados, estatísticas mensais avançadas e muito mais com o Flu-ir Premium. Termos de Uso: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Política de Privacidade: https://apps.beedevs.com.br/fluir/privacidade Comece hoje — é grátis. Seu futuro eu vai agradecer.
Iris
This app offers comprehensive period and cycle tracking with advanced features like irregular cycle detection and personal insight generation. It prioritizes user privacy by keeping all data on the device, avoiding data sharing with advertisers. It also syncs with Apple Health and includes educational content on hormones.
- Period and cycle prediction
- Irregular cycle tracking
- Personalized insights and pattern detection
- LH strip and BBT logging
- Apple Health synchronization
- Contraceptive and postpartum modes
- Symptom and mood tracking
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Every feature free. No subscription. No data sharing. Ever. Many period apps charge $10 to $15 a month, and some have been caught sharing reproductive health data with advertisers. Iris keeps your cycle data on your iPhone: no Iris servers, no account, no analytics. Your health data is never shared or sold. PERIOD & CYCLE TRACKING Log your period and Iris predicts your next one, your fertile window, ovulation day and PMS phase, mapped out weeks in advance. Color-coded calendar, day log and smart reminders included. HOME & LOCK SCREEN WIDGETS See your cycle day, phase and days until your next period at a glance, right on your Home Screen or Lock Screen. IRREGULAR CYCLE TRACKING Iris detects cycle variability from your data and switches to honest prediction ranges instead of single dates. No fertile window guessing for irregular cycles. Built for PCOS, perimenopause and anyone whose body doesn't fit the textbook. PERSONAL INSIGHTS & PATTERN DETECTION Iris turns your daily logs into useful patterns. See which symptoms, moods, discharge types, activity and vitals appear most often in each cycle phase, then tap into any pattern for phase distribution, cycle-day timing, recent history and prediction notes. After enough history, Iris can help you spot recurring signals like fatigue, cramps, mood shifts or discharge changes before they appear, with insights calculated privately on your device. LH STRIP LOGGING Log your daily ovulation test result: Negative, Positive or Peak. Iris immediately shifts your ovulation estimate to reflect your actual LH surge. Over time, Iris learns your personal luteal phase length and uses it to sharpen every future prediction, replacing the generic 14-day default with your actual biology. BBT TRACKING Log your basal body temperature each morning and Iris calculates your personal coverline. When three consecutive readings rise above it, Iris marks a confirmed thermal shift: retrospective confirmation that ovulation occurred. Pair BBT with LH strips for the symptothermal method, completely free. APPLE HEALTH SYNC Two-way sync with Apple Health. Iris reads your period history, BBT from connected thermometers, sleep and weight. Period days, BBT, LH results and cervical mucus are written back to your Health dashboard. What you log in Iris always wins; Apple Health only fills days you haven't logged. CONTRACEPTIVE & POSTPARTUM MODE On the pill, a hormonal IUD or a copper IUD? Contraceptive Mode pauses ovulation predictions, labels bleeds as withdrawal bleeds and adds a daily pill reminder. Just had a baby? Postpartum Mode pauses predictions while you recover, then resumes when you're ready. SYMPTOM & MOOD TRACKING Log mood, 14 symptoms (cramps, bloating, fatigue, acne, brain fog, hair shedding and more), discharge type with fertility context, sleep, weight and notes for any day. HORMONE EDUCATION Visualize estrogen, progesterone, FSH and LH across your full cycle, mapped to your own cycle length so the chart reflects your actual rhythm. PARTNER SHARING Invite a partner to follow your cycle: view-only, end-to-end encrypted and completely free. PRIVATE BY DESIGN Your data stays on your iPhone. No Iris servers. Optional iCloud backup goes to your own iCloud account, and we never see it. No analytics or tracking SDKs. The free version shows ads, which never receive your health data; a one-time purchase removes them. 100% FREE, NO EXCEPTIONS No premium tier. No subscriptions. No paywalls. Every single feature, from LH logging and BBT charting to irregular cycle detection, Apple Health sync, widgets, contraceptive mode and postpartum mode, is free for everyone, forever. Download Iris. Your cycle is yours.
Screenshots
Verdict
The clearest difference is ads: Flu at none against Iris's shown. Flu also leads on iOS requirement (15.1 vs 17.0). On price, in-app purchases 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. Flu sells 2 in-app purchases, starting at $1.99 per month and Iris sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
| Parameter | Flu | Iris |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.5 (2 ratings) — better |
| Number of ratings | — | 2 — better |
| Update frequency | — | Every 9 days |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 56 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Robison Fabiano | Arbaz Siddiqui |
In-app purchases
Flu
- Premium Mensal$1.991 Month
- Flu-ir Premium Annual$9.991 Year
Iris
- Support Iris (No Ads)$2.99









