Comparison

Caliber vs FORGE

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

Head to head
About

Caliber

This app offers science-based strength training, including workout planning, tracking, and exercise tutorials. It supports individual training, group workouts, and offers optional upgrades for personalized plans, advanced features, and one-on-one coaching.

Highlights
  • Unlimited workout creation and tracking
  • 600+ exercise tutorials with videos
  • Workout groups for training with friends
  • Coach-designed training plans
  • Personalized progress tracking
  • 1-on-1 elite coaching options
Features
Read full description

Caliber is a science-based strength training app that combines resistance training, cardio, nutrition, and habit formation to help you build muscle, lose weight, and improve your overall fitness - for good. TRAIN YOUR WAY • Free Version. Create and track unlimited workouts, access 800+ exercises, and train solo or with friends. • Caliber Plus. Maximize your results with coach-designed training plans, personalized progress tracking, nutrition targets and more. • Premium Coaching. Get 1-on-1 guidance from an elite-level personal trainer with a fully customized training and nutrition plan, in-app chat + video messaging with your coach and weekly progress reviews to keep you on track. CALIBER FEATURES (FREE VERSION) • Personalized Workouts. Create and track an unlimited number of workouts tailored to your goals. No gym required. • Detailed Exercise Tutorials. Learn proper form with step-by-step videos and pro tips from Caliber coaches. • Workout Circles. Train with friends and family in private workout chats. When you hit a personal best, it's shared with the group. • Apple Health Integration. Sync your cardio, nutrition, steps and body stats from your wearable or connected device. • Connect to AI. Sync your training data with ChatGPT and Claude for personalized insights and training analysis. UNLOCK MORE WITH CALIBER PLUS (OPTIONAL UPGRADE) • Coach-Designed Training Plans. Choose from 120+ structured plans tailored to your goals, experience level and schedule. • Strength Score. Measure how strong you are relative to your potential for your age and gender. • Strength Balance. Improve your posture and mobility by optimizing your training across key muscle groups. • Caliber Lessons. Gain expert insights on training and nutrition to accelerate your progress. • Advanced Training Features. Get personalized nutrition targets, create custom exercises and supersets, swap exercises, upload progress photos, and more. PREMIUM COACHING (OPTIONAL UPGRADE) • Work with an Elite-Level Coach. Train 1-on-1 with a dedicated coach to achieve your full potential in the gym and beyond. Caliber coaches are highly vetted, accredited personal trainers among the top 1% in their field. • Fully Personalized Plan. Your coach will design a training and nutrition program just for you based on your goals, experience and lifestyle. • Daily Motivation & Expert Guidance. Stay on track with in-app messaging, video form reviews, and individualized guidance. • Weekly Progress Reviews. Get in-depth analysis from your coach to optimize your training. • Fast Response Times. Your coach is available 24/7, typically replying within a few hours. • Guaranteed Results. On average, Caliber members improve their body composition by 20% or more within 12 weeks. If you don't see results, we'll refund the cost of the program. SEE WHAT OUR MEMBERS SAY • For detailed reviews from real Caliber members, visit our TrustPilot page at https://www.trustpilot.com/review/caliberstrong.com Terms of Use: https://caliberstrong.com/terms-of-service/ Privacy Policy: https://caliberstrong.com/privacy-policy/

About

FORGE

This app simplifies strength training by automatically generating your workout sessions based on your history, goals, and recovery. It adapts to your progress and available time, offering effective training without unnecessary features. Import your data from other apps easily.

Highlights
  • Automated workout generation
  • Adaptive training based on recovery
  • Time-efficient workout scheduling
  • Seamless data import from other apps
  • iCloud sync across devices
  • Intelligent programming (Premium)
Features
Read full description

FORGE is strength training for people who make decisions all day and don't want to make another one at the gym. Today is already decided. Open the app and your session is ready. Built from your history, goals, and how you're recovering. No browsing workouts. No paralysis by choice. Adapts without asking. The system learns from every rep. Miss a week, it eases you back. Feeling strong, it progresses. You never configure anything. Your data, always safe. iCloud sync keeps your workouts, routines, and personal records across every device. Sign in with Apple for seamless subscription restore. Quiet competence. No streaks. No leaderboards. No social features. No notifications guilting you into working out. Just effective training that respects your time and trusts you to show up. Time you can trust. 30 minutes means 30 minutes. Your workout fits the time you have, not the other way around. Switching is easy. Import your training history from Strong, Hevy, or FitNotes. Years of data, preserved. Free to train. Premium to think. Log unlimited workouts for free, with a preview of suggested weights. Premium unlocks intelligent programming, plateau detection, and recovery-based adjustments. From $0.99/month. Built for people who want to stay strong without making fitness their whole personality. Terms of Service: https://forgetrainer.app/terms Privacy Policy: https://forgetrainer.app/privacy

Screenshots

Caliber4 screens
FORGE4 screens

Verdict

The call

The clearest difference is ratings volume: Caliber at 5.9K against FORGE's 3. Caliber also leads on chart position (#176 vs unranked) and iOS requirement (15.1 vs 17.6). FORGE's advantage is review sentiment (100% vs 78%) and rating (5.0 vs 4.8). On price, ads, in-app purchases and monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Caliber sells 18 in-app purchases, starting at $3.00 per month and FORGE sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

FORGE holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Caliber has 5.9K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 78% of Caliber's written reviews are positive against 100% of FORGE's.

UpkeepUpdate frequency

Caliber ships an update fortnightly, FORGE every 5 days. The most recent releases landed on October 15, 2026 and October 2, 2026 respectively.

Scorecard6 real differences · 5 level
Caliber versus FORGE: the parameters behind the verdict, then further details
ParameterCaliberFORGE
PriceFreeFree
Rating4.8 (5.9K ratings)5.0 (3 ratings) — better
Positive reviews78.3% of reviews100.0% of reviews — better
Number of ratings5.9K — better3
Update frequencyFortnightlyEvery 5 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
Best chart rank#176 — better—
DevicesiPhone, iPodiPhone, iPad, Apple Watch — better
Requires iOS15.1 — better17.6
Further details — not scored
Size67 MB53 MB
Age rating12+4+
DeveloperCaliber Fitness, IncKP Family Investments LLC

Customer experience

Caliber

All ratings5,927 ratings
Positive96.6%
Neutral1.1%
Negative2.3%
Written reviews526 reviews
Positive78.3%
Neutral6.3%
Negative15.4%

FORGE

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Caliber

Reported bugs

3 issues
  • Workout data loss when switching between online and offline mode
  • Strength score not updating correctly in some cases
  • Inability to log weight for certain exercises

Requested features

5 requests
  • Add ability to create and save custom exercises
  • Integrate with more fitness tracking devices and apps
  • Improve offline mode to allow full workout tracking
  • Provide more flexibility in workout scheduling and planning
  • Enhance strength score calculations and explanations

FORGE

Not enough reviews yet to summarise bugs or requests.

In-app purchases

18 purchases

Caliber

Subscriptions18
  • Caliber Supporter (Monthly)$3.001 Month
  • Caliber Supporter (Monthly)$5.001 Month
  • Caliber Plus (Monthly)2 variants$6.001 Month
Show 15 more
  • Caliber Plus (Monthly)7 Days trial$6.001 Month
  • Caliber Supporter (Monthly)$7.001 Month
  • Caliber Supporter (Monthly)$9.001 Month
  • Caliber Plus (Monthly)2 variants$9.001 Month
  • Caliber Plus (Monthly)2 variants$12.001 Month
  • Caliber Pro (Monthly)$19.001 Month
  • Caliber Pro (Monthly)7 Days trial$19.001 Month
  • Caliber Plus (Yearly)7 Days trial$36.001 Year
  • Caliber Pro (3 Months)$49.003 Months
  • Caliber Pro (3 Months)7 Days trial$49.003 Months
  • Caliber Plus (Yearly)7 Days trial2 variants$54.001 Year
  • Caliber Plus (Yearly)7 Days trial2 variants$72.001 Year
  • Caliber Plus (Yearly)1 Month trial$72.001 Year
  • Caliber Pro (Yearly)$169.001 Year
  • Caliber Pro (Yearly)7 Days trial$169.001 Year
2 purchases

FORGE

Subscriptions2
  • Forge Premium$0.991 Month
  • Forge Premium$9.991 Year

Questions

Is Caliber free?
Caliber is free to download, with in-app purchases available.
Is FORGE free?
FORGE is free to download, with in-app purchases available.
Which has better reviews, Caliber or FORGE?
FORGE is rated higher. Caliber averages 4.8 out of 5 from 5.9K ratings, while FORGE averages 5.0 from 3 ratings.
Do Caliber or FORGE have ads?
Neither Caliber nor FORGE shows ads.
Which is updated more often, Caliber or FORGE?
Caliber ships an update fortnightly, and FORGE every 5 days. Most recently, Caliber was updated on October 15, 2026 and FORGE on October 2, 2026.

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