FastFox vs Cyca
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FastFox
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FastFox makes intermittent fasting simple with real-time phase tracking, body metrics, and personalized insights. No subscriptions — just a one-time Pro upgrade. FASTING TIMER & PHASES: - Beautiful countdown ring with real-time progress - See your current fasting phase — from fat burning to ketosis and autophagy - Supports 16:8, 18:6, 20:4, OMAD, and custom schedules - Smart timer saves progress in background and auto-completes fasts FASTING GUIDE LIBRARY: - 10 expert articles on coffee, exercise, sleep, electrolytes, and more - Science-backed answers to common fasting questions HISTORY & TRACKING: - Calendar view with complete log of all past fasts - Weekly summary with streak counter - Water intake and energy level tracking per fast - Fast summary review after every session HOME SCREEN WIDGET: - Track your fasting timer and phase right from your home screen - Small and medium widget sizes with real-time countdown - Auto-updates with phase transitions — no need to open the app PRO (one-time $14.99): - Personalized Insights — Smart coaching based on your fasting patterns, best schedule, weak days, and optimal start times - Body Metrics Dashboard — Track weight, BMI, waist, and body fat trends with visual charts - Phase Deep Dive — Detailed science behind each fasting stage - Fasting Guide Library — Full access to all 10 expert guides - Custom Schedule — Set your own fasting hours beyond standard presets - CSV & PDF Export — Export your data and reports anytime - Ad-Free Experience — Clean, distraction-free interface PRIVACY FIRST: All data stays on your device. No accounts, no cloud uploads. Your health data belongs to you. WHY FASTFOX? Most fasting apps lock basic features behind $40–80/year subscriptions. FastFox gives you a complete fasting tracker — phases, insights, body metrics, and guides — for a single one-time purchase. No recurring charges, ever. Made by MyQuietSpot Inc.
Cyca
This app helps you track your menstrual cycle, predict your period, fertile window, and ovulation day. It offers a daily body forecast for energy, mood, and skin, and allows for quick logging of symptoms. Your data stays private and offline on your device.
- Period and cycle tracking
- Fertile window and ovulation prediction
- Daily body forecast (energy, mood, skin)
- Quick symptom logging
- Private and offline data storage
- Period and PMS reminders
- Smart planner for best/gentlest days
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Optimized for iPhone Duo. Built with the latest SDK, the app fills the entire inner display and automatically adjusts its layout whether the device is folded or open. Log your period and Cyca estimates your next period, fertile window and ovulation day, all on one calm calendar that adjusts every time you log. A Daily Body Forecast reads where you are in your cycle — energy, mood, skin — and cramps, flow and moods take seconds to log. No account, no cloud: your data stays on your iPhone and works fully offline. YOUR DAILY BODY FORECAST Wake up to a caring daily reading of your energy, mood, skin, and comfort, based on where you are in your cycle — with kind suggestions to plan your day with ease. SMART, PERSONAL PREDICTIONS Cyca learns your unique rhythm to predict your next period, fertile window, and ovulation, and adapts every time you log. A CALENDAR THAT FEELS CALM See your whole cycle at a glance — period days, fertile window, and ovulation in soft, clear color. No clutter, just clarity. LOG IN SECONDS Record flow, cramps, moods, and notes effortlessly, and watch your personal patterns gently appear over time. PERSONAL RHYTHM & SMART PLANNER Personal Rhythm shows how your body tends to move through each phase. The Smart Planner highlights your best and gentlest days, so you can plan life around how you actually feel. DAILY CARE PLAN & PERIOD REMINDERS A daily Care Plan and a gentle heads-up before your period or PMS help you plan ahead and go a little easier on yourself. PRIVATE BY DESIGN Your cycle is yours alone. Cyca has no servers and no account — your data never leaves your device, and the app works fully offline. Privacy isn't a setting here; it's the whole design. YOURS FOREVER, NO SUBSCRIPTION Track today and your period for free. Unlock Cyca Pro once for future predictions, Personal Rhythm, the Smart Planner, full calendar history, and deeper personalization — a single lifetime purchase, never a subscription. Cyca provides wellness and planning estimates and is not a medical device or a form of contraception. Optimized for iPhone Duo.
Screenshots
Verdict
The clearest difference is ads: Cyca at none against FastFox's shown. Cyca also leads on update cadence (weekly vs every 2 months). FastFox's advantage is iOS requirement (15.0 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. FastFox sells 1 one-off in-app purchase and Cyca sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
FastFox ships an update every 2 months, Cyca weekly. The most recent releases landed on October 25, 2026 and November 5, 2026 respectively.
| Parameter | FastFox | Cyca |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.7 (3 ratings) — better |
| Number of ratings | — | 3 — better |
| Update frequency | Every 2 months | Weekly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 51 MB | 6 MB |
| Age rating | 12+ | 4+ |
| Developer | MyQuietSpot Inc. | Guan Feng Lai |
In-app purchases
FastFox
- FastFox Pro$14.99
Cyca
- Cyca Pro$4.99









