Stop second-guessing your training. Get smart next-set guidance, coach-built programs, and progress you can read-plus 30 days of Pro free.
STOP GUESSING. TRAIN WITH CONFIDENCE.
Cornerstone Strength helps you know what to do next, and understand why.
Every set you log becomes useful context: what the plan called for, how you performed, how hard it felt, and how your training is trending. Cornerstone turns that context into clear guidance while keeping you in control.
KNOW WHAT TO DO NEXT
Get your next weight, sets, and reps suggested right on the workout screen. Smart Suggestions use your recent performance, logged effort (RPE/RIR), time between sessions, and program targets.
Every suggestion includes a plain-language reason. Apply it with one tap, adjust it, or keep your plan. It is a starting point, not a rule.
EVERY WORKOUT HAS A PURPOSE
Choose from programs written by real strength coaches using proven periodization for strength, hypertrophy, athleticism, or a mix. Enter your numbers and train, customize a program, or build your own from scratch.
Percentage-based programs calculate working weights from your training maxes automatically, so the plan is ready when you are.
SEE THE TREND BEFORE THE NEXT PR
Understand whether the work is working:
- Estimated 1RM (e1RM) trends
- Training volume by muscle group
- Weekly volume and muscle-balance insights
- Personal-record history and automatic PR detection
- Workout consistency and streaks
- Month, 3-month, year, and all-time views
LOG WITHOUT LOSING YOUR FLOW
- Weight, reps, RPE, RIR, and AMRAP support
- Previous performance beside today’s set
- Structured program sessions or quick workouts
- Background rest timer with audio and vibration alerts
- Exercise swaps, notes, and duration tracking
- Band tracking for accommodating resistance
- Apple Health workout sync
500+ EXERCISES
Find movements for a commercial gym, garage gym, or anywhere in between. Browse by muscle group or equipment, including barbells, dumbbells, kettlebells, machines, cables, bodyweight, trap bars, specialty bars, and more.
SHARE THE WORK
Turn a completed workout into a clean card with PRs, top lifts, and muscle-group balance. Share it to Instagram Stories, save it to Photos, or send it to a training partner.
START WITH 30 DAYS OF PRO- FREE
Every new account gets 30 days of Cornerstone Pro with every program, Smart Suggestions, and full analytics unlocked. No credit card required. When the 30 days end, keep logging free forever or subscribe to keep Pro.
BUILT FOR LIFTERS
- Dark and light themes
- Fast, focused interface
- No ads
Cornerstone does more than remember what you lifted. It helps the next training decision feel clear.
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Privacy Policy: https://cornerstonestrength.app/privacy
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Subscription details:
- Cornerstone Pro Monthly: $7.99/month
- Cornerstone Pro Annual: $49.99/year
Payment will be charged to your Apple ID account at confirmation of purchase. Subscription automatically renews unless it is canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions by going to your account settings on the App Store after purchase.
I love this app as a busy mom who still wants to get a lift in and see progress. I hate tracking normally because it takes so much time and mental energy but this app does it for me. I love utilizing the quick workout feature and easily changing out exercises as needed. I like that it always show the weights and reps I did previously for each exercise so I don’t have to waste my time or headspace. It has advanced features for very serious lifters who meticulously track but also can be used on a very basic levels as well. It has exercises for my garage gym so I don’t have to add new ones every time I lift. Totally recommend!
Developer Response
Thank you for the review! Busy people balancing lifting with everything else are exactly who we had in mind — tracking shouldn't take more time and mental energy than the workout itself. So glad the quick workout feature, exercise swaps, and home/garage gym setup are saving you headspace.We've got a lot more coming in future updates, so stay tuned!
Best strength app ever
Awesome;$48,83$2
For those looking for a high quality, data tracking strength and programming app, this is for you. Cornerstone strength has programs for every day users and competitive lifters, it’s easy to use and provides all the key metrics any serious lifter would want. Well worth the small subscription fee!
Developer Response
Thank you for your review! We built Cornerstone Strength for exactly this, serious lifters who want real programming and the data to back it up, without the app getting in the way. Glad it's hitting the mark for you.
Sam Swiontek App Review
Sam Swion
Fantastic, fun way to track my workouts and progress. Gives me reasonable weight increase suggestions and shows my overall muscle group volume in graphs and percentages. Definitely improved my weight lifting experience
Developer Response
Thanks for the review! We're glad the app is making your training easier and more effective.
Make working out fun
TG_12597
For someone who hates working out, this app keeps me consistent! The workouts are manageable, not intimidating, and actually kind of fun. I love that I can do them on my own time without feeling pressured or overwhelmed!
Developer Response
Thank you so much! Consistency is the most important thing in training, and knowing the app helps make it feel manageable (and even fun) is awesome.
Minor bug fixes
Version 1.1.3
The developer, K&G Apps, 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 Linked to You
The following data may be collected and linked to your identity:
Health & Fitness
Contact Info
Identifiers
Usage Data
Diagnostics
Privacy practices may vary, for example, based 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
Seller
K&G Apps LLC
Size
62.3 MB
Category
Health & Fitness
Compatibility
Requires iOS 15.1 or later.
iPhone Requires iOS 15.1 or later.
iPad Requires iPadOS 15.1 or later.
iPod touch Requires iOS 15.1 or later.
Mac Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
