C vs Cyclune
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
C
This app verifies gym check-ins with GPS to track real progress and build streaks. It allows users to log workouts, compete on leaderboards, and connect with friends and local gym communities. Premium features offer advanced analytics and customization.
- GPS-verified gym check-ins
- Workout logging (exercises, sets, reps, weight)
- Streaks and XP for gym attendance
- Monthly gym leaderboards
- Social features: follow friends, group challenges
- Muscle group identification
- Rest timer with Lock Screen Live Activities
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Most fitness apps take your word for it. C-Rex does not. C-Rex is a GPS-verified gym and workout tracker that turns showing up into real progress. Every check-in is tied to the gym you are actually visiting. Build streaks, earn XP, compete on monthly gym leaderboards and train with people around you. SHOW UP AND MAKE IT COUNT Check in when you arrive at the gym. C-Rex uses GPS to verify that you are actually there. Build a streak based on real gym sessions, not good intentions. Earn XP and climb your gym’s monthly leaderboard. Join challenges and earn rewards when you complete them. TRAIN WITH YOUR PEOPLE Follow friends and see who is training right now. View your friends’ workout activity in one feed. Create or join groups with your training partners. Take on group challenges together. Message the people you train with without leaving the app. LOG EVERY WORKOUT Track exercises, sets, reps, weight, duration and cardio. Choose from a database of 500+ exercises. See a weekly muscle map showing what you have trained. Identify the muscle groups you keep neglecting. Select the muscles you want to work and build a session around them. Use the rest timer while you train. Keep your timer visible on your Lock Screen with Live Activities. FIND YOUR GYM COMMUNITY Discover gyms near you on the map. See who is training at nearby gyms. Find gym buddies who match your training lifestyle. Share workouts, progress and achievements with the community. C-REX PREMIUM Upgrade to Premium for: Progress charts over time Private progress comparisons with friends The ability to see who viewed your profile Custom name colours and emojis GIFs in group chats Streak Shield protection C-Rex’s core features — including gym check-ins, workout logging, streaks, XP, social features, challenges and chat — are available for free. Premium is available as a monthly or yearly subscription. Subscriptions automatically renew unless cancelled at least 24 hours before the current billing period ends. Payment is charged to your Apple Account upon confirmation of purchase. You can manage or cancel your subscription through your Apple Account settings after purchase. Privacy Policy: https://gym-app-ce4a9.web.app/privacy Terms of Service: https://gym-app-ce4a9.web.app/terms
Cyclune
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Get to know your daily patterns with Cyclune: an Apple Health-based Daily Rhythm Score and classic biorhythm cycles in one private app. RHYTHM — YOUR DAILY PATTERNS With your permission, Cyclune reads the last 14 days of Apple Health data to estimate a Daily Rhythm Score (0–100). Explore sleep timing, sleep duration, daytime activity, activity consistency, heart recovery and daylight. The confidence indicator shows how much usable data supports your score. Free access includes your score and up to three available factors, with insights and tips based on those factors. Pro opens the full six-factor breakdown, insights based on all available factors, a 14-day score history, today’s activity timeline and advanced 24-hour activity rhythm analysis. Available results depend on your Health data; at least three useful days are needed. CLASSIC — EXPLORE YOUR CYCLES Enter your date of birth to explore traditional biorhythm curves. Physical and Emotional cycles, an energy ring, charts and a 7–90-day forecast are free. Pro adds Intellectual, Intuitive, Spiritual, Aesthetic and Charismatic cycles, detailed insights, trends and next peak/trough forecasts. Compare up to three local profiles: two cycles for free, all seven with Pro. Classic biorhythms are for entertainment and self-reflection, not scientifically validated predictions. APPLE WATCH & WIDGETS Keep your latest Rhythm and Classic summaries close with the companion Apple Watch app and watch face complications. Watch summaries refresh from your paired iPhone. The Watch interface is in English. Pro also includes Home Screen and Lock Screen widgets on iPhone. PRIVATE BY DESIGN No account, no ads, no tracking and no Cyclune cloud server. Health data is read only and processed on your iPhone. Compact summaries can sync to your paired Apple Watch; nothing is uploaded to us. Share cards only when you choose. Optional reminders are local. PRO — ONE PURCHASE Unlock Pro with one optional in-app purchase. No subscription and no recurring charges. Restore your purchase with the same Apple ID. Cyclune is a self-observation tool. Its scores and insights are estimates, not medical advice, diagnosis, treatment or a measure of readiness. Apple Health access is optional; Classic works without it.
Screenshots
Verdict
C and Cyclune are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. C sells 2 in-app purchases, starting at $4.99 per month and Cyclune sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
| Parameter | C | Cyclune |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 5 days | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone | iPhone, Apple Watch — better |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 125 MB | 8 MB |
| Age rating | 12+ | 12+ |
| Developer | Jerry Kwong | Artem Odintsov |
In-app purchases
C
- C-Rex Monthly Subscription$4.991 Month
- C-Rex Yearly Subscription$49.991 Year
Cyclune
- Cyclune Pro$3.99








