Fiber Coach: Workout Planner

Fitness & Strength Training

Only for iPhone

Free · In-App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

Your Personal Trainer for Strength, Muscle & Fitness Fiber is the ultimate workout planner and fitness coach that builds personalized workout plans for strength training, muscle building, weight loss, and overall fitness. Whether you train at the gym or at home, Fiber adapts your program to your goals, fitness level, schedule, and available equipment. Unlike generic apps, Fiber uses the science of progressive overload and smart weight recommendations to make every session effective. With adaptive training that updates after every set, you’ll always know the right weight, sets, and reps to keep improving consistently. WHAT MAKES FIBER UNIQUE • Personalized Workout Plans: Take a quick quiz and get a custom workout routine designed around your goals, fitness experience, training frequency, and available equipment. • Structured Training Programs: Programs for strength, hypertrophy, weight loss, and overall fitness, organized into blocks and phases for long-term results. • Smart Progression & Tracking: Fiber adjusts every workout in real time, updating weights and reps so you can keep building muscle and strength. • Fiber Score & Ranks: A unique system to measure progress, balance muscle groups, and stay motivated as you level up from Beginner to Elite. • Gym Workouts & Home Workouts: Effective sessions whether you have full gym equipment, a small setup, or just bodyweight. • Extensive Exercise Library: 140+ exercises with instructions, images, and alternatives to train every muscle group with confidence. • Workout Stats & Progress Charts: Track streaks, training volume, personal records, time spent, and weekly progress compared to your goals. PROGRAMS FOR EVERY GOAL • Strength Training Plans: Lift heavier, improve performance, and reach new PRs. • Hypertrophy Programs: Effective muscle building with structured volume and proven rep ranges. • Weight Loss Workouts: Burn fat, stay consistent, and preserve lean muscle. • Overall Fitness Programs: Balanced routines to feel stronger, healthier, and more athletic. FOR ALL LEVELS Fiber is built for every fitness level — from first timers and beginners to intermediate and advanced lifters. • Beginners: Learn safely with guided exercises, light starting weights, and gradual progression so you build confidence and consistency. • Intermediate users: Go beyond the basics with structured strength training and hypertrophy programs designed for steady muscle growth and new personal records. • Advanced lifters: Keep progressing with progressive overload, adaptive weight recommendations, and detailed tracking that helps you avoid plateaus and reach elite performance. No matter your level, Fiber adapts your workout plan so you can train effectively at the gym or at home and keep improving week after week. WHY USERS CHOOSE FIBER • A personal trainer app that guides every workout. • Long-term plans with measurable results. • Adaptive training that evolves with your performance. • Flexibility to train anywhere: home or gym workouts. • Motivation through the Fiber Score ranking system. • Confidence with detailed guidance and progress tracking. Fiber is more than a workout tracker — it’s your strength training coach, helping you stay consistent, motivated, and progressing every week. FIBER PRO Unlock your full potential with Fiber Pro. Flexible options: $4.99/week $12.99/month, $29.99/quarter, $59.99/year with a 3-day free trial and $34,99 for a discounted year! Privacy Policy: https://withfiber.com/privacy-policy/ Terms of Use: https://withfiber.com/terms-and-conditions/ Support: hello@withfiber.com

Ratings & Reviews

  • This app has not received enough ratings or reviews to display an overview.

New Fiber Update! • Added 3-Day Free Trial for Annual Plan

Version 1.5

The developer, Grim Works Sociedad Limitada, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Used to Track You

    The following data may be used to track you across apps and websites owned by other companies:

    • Identifiers
    • Usage Data

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Health & Fitness
    • Financial Info
    • Contact Info
    • Identifiers
    • Usage Data
    • Diagnostics

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Financial Info
    • Identifiers
    • Usage Data

Privacy practices may vary based, for example, on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Provider
  • Grim Works Sociedad Limitada
Size
  • 77.9 MB
Category
  • Health & Fitness
Compatibility
Requires iOS 16.6 or later.
  • iPhone
    Requires iOS 16.6 or later.
  • Mac
    Requires macOS 13.5 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English and 2 more
  • English, Catalan, Spanish
Age Rating
9+
In-App Purchases
Yes
  • Fiber Premium Discount ₹ 3,499
  • Fiber Premium Weekly ₹ 499
  • Fiber Premium Yearly ₹ 5,900
  • Fiber Premium Monthly ₹ 1,299
  • Fiber Premium Quarterly ₹ 2,999
  • Learn More
Copyright
  • © grim works sl.
  • Privacy Policy

    • More by Grim Works Sociedad Limitada

    You Might Also Like