Comparison

Castra App vs On Lifting

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

Head to head
About

Castra App

Features
Read full description

The platform where fitness coaches seamlessly manage clients and everyone can discover motivation for free FEATURES: - Log your workout with a simple and easy to use interface - Ready to use workouts to get you started, or get a personalized AI-generated plan the moment you sign up - Hundreds of exercises in our library or create your own - Create your own custom exercises for your workouts - Follow and copy your friends workout - Analyze your workout in details with charts and graphs - Analyze your body measure progress - Lead or join your dream team of athletes, or discover and join public communities and challenges - Manage your clients workouts and track their performance - Send and track check-ins and custom forms with your clients - Find your coach that will help you achieve your dream body, and book their sessions and services directly - Share your workouts and achievements as branded images to Instagram, Facebook and beyond - Chat with your coach or clients in real time ATHLETE: - Unlimited workouts per day - Unlimited custom exercises - Unlimited Graph History - Instantly connect with coaches - Book coaching sessions and services - Join challenges and earn rewards - Support our small team COACH: - Lead your own team of athletes - Manage and organize your clients workouts - Assign and review check-ins and custom forms - Publish bookable services and manage your schedule - Chat with your clients in real time - Support our small team Th Athlete and Coach subscriptions automatically renews if you do not cancel it at least 24 hours before the end of the current subscription period. Your account will be charged for the next subscription period up to 24 hours prior to the current subscription's expiration. You can manage your subscription and disable automatic renewal at any time by adjusting your Apple account settings. You have the right to withdraw from your initial subscription within 14 days of starting it. By purchasing, you accept our Tems & Conditions and Privacy Policy. Terms & Conditions https://castra.app/terms-and-conditions/ Privacy Policy https://castra.app/privacy-policy/ Own your journey!

About

On Lifting

This private workout log allows users to track strength training progress with a focus on speed and privacy. It offers detailed exercise tracking, routine management, and insightful progress charts, all while keeping data offline and on your device.

Highlights
  • Private, offline workout logging
  • Fast logging with smart defaults
  • Extensive exercise library with videos
  • Customizable routines and set types
  • Detailed progression charts and insights
  • Apple Watch and widget integration
  • CSV export and Apple Health integration
Features
Read full description

On Lifting is a fast, private workout log: no account, no ads, no tracking. Most sets take one tap to log, and you can follow your progress in depth. Key Features • Private by default. Your data stays on your device and in your own backups. Logging works fully offline. • Designed for speed: smart defaults and a dedicated keyboard keep logging quick. • Family Sharing included at no extra cost. Free to download, no account needed. Your first 10 workouts are free, and imported workouts don't count. Still not sure On Lifting is right for you? Keep going with a free trial: 3 months on the yearly plan or 1 month on the monthly. Cancel anytime. One subscription covers your family through Family Sharing, and your history, charts and exports are always available whether you subscribe or not. Here's what you get: Workouts & Routines • Find a program for your level and schedule in the program library. Each one explains what it's for, how it works and how to progress. • More than 270 exercises with short, to-the-point how-to videos. • Create your own exercises to complement the built-in library. • Set up routines and programs, and reorganize them as your training evolves. • Group exercises into supersets in your routines and workouts. • Configure different set types: warm-up, drop sets, to-failure, work sets. • Define targets for reps, weight, duration, or intensity per set (great for progressive overload). • Supports Reps in Reserve (RIR) and Rate of Perceived Exertion (RPE) for tracking intensity. • Flexible rest timers that automatically track rest between sets. Customize by exercise, routine, or both. • Add notes to exercises, routines, and workouts. Track form cues, machine settings, or how a session felt. • Supports imperial (lb) and metric (kg) units. Progression & Insights • Visualize gains with charts that show trends in volume, strength, one rep max, and more. • Pin your core lifts and track their progress over time with detailed charts and personal records. • See which muscles your training covers with a body map and a 12-week heat map. • Set a weekly workout goal and build a streak. • Track progression at the program level: workouts, volume, personal records, and consistency. • Log body measurements like weight and body fat percentage with trend charts. • Browse your workout history with a full calendar. Zoom from month to year to multi-year for a bird's-eye view of your training. Apple Ecosystem • Apple Watch app mirrors your workout, showing the upcoming exercise, current set target, previous set data, rest time, and more. • Follow your workout on the Lock Screen and in the Dynamic Island. • Home Screen and Lock Screen widgets for your streak, workout calendar, heat map and pinned lifts. • Integrates with Apple Health on your iPhone and Apple Watch, including body measurements. Your data, your rules • Privacy first. I don't collect or store any of your data. • Export your workouts to CSV anytime. • Import your history from other popular apps. Imported workouts don't count toward your free limit. • Daily backups to your iCloud Drive or iPhone, easy to restore. This is just the beginning I am a solo self-funded developer with low overhead — no big company or investors here. I am making something I love and use every day, built to respect your privacy. I hope to provide a lot of value, far greater than what I charge, supported by a like-minded audience. As the primary user, I have a long roadmap ahead, and I am committed to keeping the app affordable, clean, fast, and privacy-focused as it grows. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Castra App4 screens
On Lifting4 screens

Verdict

The call

The clearest difference is update cadence: Castra App at weekly against On Lifting's every 3 weeks. Castra App also leads on iOS requirement (16.6 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Castra App sells 4 in-app purchases, starting at $4.99 per month and On Lifting sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Castra App ships an update weekly, On Lifting every 3 weeks. Both last shipped on October 30, 2026.

Scorecard2 real differences · 8 level
Castra App versus On Lifting: the parameters behind the verdict, then further details
ParameterCastra AppOn Lifting
PriceFreeFree
Rating—5.0 (7 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—7 — better
Update frequencyWeekly — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, Apple WatchiPhone, Apple Watch
Requires iOS16.6 — better18.0
Further details — not scored
Size66 MB31 MB
Age rating17+4+
DeveloperCASTRA APP OODJoy of Dev AB

In-app purchases

4 purchases

Castra App

Subscriptions4
  • Athlete Subscription14 Days trial$4.991 Month
  • Coach Monthly Subscription14 Days trial$29.991 Month
  • Athlete Annual Subscription14 Days trial$49.991 Year
Show 1 more
  • Coach Yearly Subscription14 Days trial$269.991 Year
2 purchases

On Lifting

Subscriptions2
  • On Lifting - Monthly1 Month trial$1.991 Month
  • On Lifting - Yearly3 Months trial$14.991 Year

Questions

Is Castra App free?
Castra App is free to download, with in-app purchases available.
Is On Lifting free?
On Lifting is free to download, with in-app purchases available.
Do Castra App or On Lifting have ads?
Neither Castra App nor On Lifting shows ads.
Which is updated more often, Castra App or On Lifting?
Castra App ships an update weekly, and On Lifting every 3 weeks. Most recently, Castra App was updated on October 30, 2026 and On Lifting on October 30, 2026.

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