Comparison

C vs Dosion

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

C

Features
Read full description

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 β€” including gym check-ins, workout logging, streaks, XP, social features, challenges and chat β€” 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

About

Dosion

Features
Read full description

Keep track of your vitamins and supplements: what’s due, what you’ve taken, and what comes next. Dosion brings your daily schedule, reminders, and intake history together on your iPhone. YOUR ROUTINE, CLEARLY ORGANIZED β€’ See upcoming, taken, skipped, and missed doses at a glance. β€’ Set intake times, reminders, cycles, and planned breaks. β€’ Log the actual time of a late dose or record why you skipped it. β€’ Add a supplement just for today without creating a recurring schedule. ADD YOUR SUPPLEMENTS YOUR WAY Scan a barcode or photograph a label, search the library, or enter details yourself. Keep your supplement list, serving amounts, and timing in one place. Review scanned details before saving. SEE YOUR NUTRIENT TOTALS For supported nutrients, compare intake with published reference values and view upper-limit checks when editing your routine. References include NIH ODS, EFSA, and NASEM. Coverage depends on available ingredient data; these checks do not assess every supplement or interaction. NOTICE PATTERNS OVER TIME Record how you feel with quick check-ins for mood, energy, focus, stress, and symptoms. Explore possible associations between your supplement routine and, with Pro, optional Apple Health data. Patterns need enough logged data and show associations, not proof of cause and effect. BUILT AROUND YOUR PRIVACY Core tracking works offline. Start in Guest mode without creating an account. Pattern analysis runs on your device, and Apple Health data is not sent to Dosion servers. Optional iCloud sync uses your Apple account to sync your routine, logs, check-ins, and profile. Export or delete your data from Settings. START FREE. EXPAND WITH PRO. Free includes up to 5 active supplements, 3 reminders per day, and 14 days of history. It also includes a limited Personal Library, Patterns, food searches, and stack sharing. Dosion Pro adds a larger supplement list, full history, deeper nutrient views and Patterns, inventory and spending tracking, home-screen widgets, and unlimited reminders. It also enables optional logging of supported nutrients to Apple Health. Monthly and annual subscriptions are available. Add your first supplement and make today’s routine easier to follow. Dosion is for wellness tracking and education. It does not provide medical advice, diagnosis, or treatment. Ask a qualified healthcare professional about your supplements and health. Privacy Policy: https://dosion.bioaionics.com/privacy Terms of Use: https://dosion.bioaionics.com/terms

Screenshots

C4 screens
Dosion4 screens

Verdict

The call

The clearest difference is update cadence: C at every 4 days against Dosion's every 9 days. C also leads on iOS requirement (16.0 vs 18.0). On price, review sentiment, ads and in-app purchases there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. C sells 2 in-app purchases, starting at $4.99 per month and Dosion sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

C ships an update every 4 days, Dosion every 9 days. The most recent releases landed on October 13, 2026 and October 15, 2026 respectively.

Scorecard2 real differences Β· 5 level
C versus Dosion: the parameters behind the verdict, then further details
ParameterCDosion
PriceFreeFree
Positive reviews100.0% of reviews100.0% of reviews
Update frequencyEvery 4 days β€” betterEvery 9 days
AdsNoNo
In-app purchasesYesYes
DevicesiPhoneiPhone
Requires iOS16.0 β€” better18.0
Further details β€” not scored
Size125 MB30 MB
Age rating12+17+
DeveloperJerry KwongArtem Odintsov

Customer experience

C

Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Dosion

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

C

Subscriptions2
  • C-Rex Monthly Subscription$4.991 Month
  • C-Rex Yearly Subscription$49.991 Year
2 purchases

Dosion

Subscriptions2
  • Dosion Pro Monthly$4.991 Month
  • Dosion Pro Annual7 Days trial$39.991 Year

Questions

Is C free?
C is free to download, with in-app purchases available.
Is Dosion free?
Dosion is free to download, with in-app purchases available.
Do C or Dosion have ads?
Neither C nor Dosion shows ads.
Which is updated more often, C or Dosion?
C ships an update every 4 days, and Dosion every 9 days. Most recently, C was updated on October 13, 2026 and Dosion on October 15, 2026.

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