18 GYM vs Calibro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
18 GYM
Manage your gym activities, from checking class schedules and booking spots to renewing memberships and purchasing services. Track your membership details and stay updated on gym news.
- Class schedule viewing
- In-app class booking
- Online membership renewal
- New membership sign-up
- Service purchases
- Account details tracking
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Now you can manage your activity at our gyms a lot easier, using our app. - Class schedule - you can check our class schedule at any time - Bookings from the app - you can book your favorite classes straight from the app - Buy memberships online – you can renew your membership online, in just a few simple steps - Become a member – if you haven't tried the 18GYM experience yet, you can become a member in just a few minutes - Buy services - you can buy additional services online, on the spot - Details about your account - you can keep track of your membership, see how many days you have left, and its benefits - Useful info about our gyms - get updates about what's going on in our gyms Enjoy your workouts!
Calibro
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Calisthenics that scales with you, from your first push-up to the muscle-up. Calibro is a bodyweight training tracker built for steady, measurable progress. Every exercise has its own progression ladder, and when you hit your target reps, Calibro moves you up to the next, harder version, so you're always working at the right difficulty. KEY FEATURES • Easy Start — Answer four quick questions about what you can do today (push-ups, pull-ups, squats, plank) and Calibro picks your starting level. No exercise names to know. • Smart Progressions — 17 core movements with up to 7 levels each, from your first variation through advanced. Hit your reps on every set and you level up. • Skill Paths — Structured progressions toward Handstand, L-Sit, Front Lever, and Muscle-Up. • Apple Watch Companion — Log sets and rest from your wrist. Workouts are saved to Apple Health, with the heart rate your Watch records. • Home Workout — One toggle swaps bar, ring and dip exercises for bodyweight-only alternatives. No bar, no problem. • Built-in Programs — Three full-body workouts (Frontline, Backbone, Crossover) rotate push, pull, and full-body movements with core in every session. • Private by Design — Your workout history stays on your iPhone. No account, no ads, no tracking. Sharing crash reports and usage data is optional and off unless you turn it on. Whether you're working on your first pull-up or grinding toward the muscle-up, Calibro scales with you.
Screenshots
Verdict
The clearest difference is update cadence: Calibro at weekly against 18 GYM's every 5 weeks. 18 GYM's advantage is iOS requirement (15.6 vs 18.0). On price, ads, 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. Neither carries in-app purchases, so what you see is what you pay.
18 GYM ships an update every 5 weeks, Calibro weekly. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.
| Parameter | 18 GYM | Calibro |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (2 ratings) — better | — |
| Positive reviews | 22.2% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 5 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, Apple Watch |
| Requires iOS | 15.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 59 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | UPFIT SRL | Dan-Florin Muresan |
In-app purchases
18 GYM
No in-app purchases
Calibro
No in-app purchases









