Built With Science+ vs Restrr
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Built With Science+
This intelligent fitness companion offers personalized workout plans and nutrition advice based on scientific insights. It adapts to your progress with real-time feedback, providing guidance for continuous gains and informed health decisions.
- Hyper-Personalized Workouts
- Progressive Overload Guidance
- Real-Time Diet Adjustments
- AI-Powered Meal Scanner
- 250+ Exercise Tutorials
- Daily Knowledge Boosters
- AI Fitness & Nutrition Assistant
Read full descriptionHide full description
Reach your goals faster with BWS+ all-in-one fitness coach. Frustrated with cookie-cutter workout plans and confusing nutrition advice? BWS+ is your intelligent coach and complete fitness companion for achieving the body you've always wanted. The app integrates insights from leading fitness scientists, coaches, and dietitians, offering personalized advice based on your unique body and goals. It evolves with you, adapting your workouts and nutrition based on real-time feedback, encapsulating decades of experience into a dynamic coach that tailors itself to your needs. The latest science, personalized to you - Hyper-Personalized Workouts: Built with Science's advanced algorithm creates a workout plan specifically for your body, goals, and schedule. Whether you're hitting the gym or training at home, we've got you covered. - Progressive Overload Guidance: Never plateau again. BWS+ tells you exactly how to adjust your weights and reps each session for continuous gains. - Real-Time Diet Adjustments: As your body changes, so do your nutritional needs. Our app adapts your meal plan weekly, ensuring you're always on track. All-in-One Fitness and Nutrition Solution - 250+ In-Depth Exercise Tutorials: Master proper form with our detailed video guides, packed with science-based insights. - AI-Powered Meal Scanner: Say goodbye to tedious calorie counting. Simply snap a photo of your meal, and our AI does the rest, accurately tracking your nutrition in seconds. - Daily Knowledge Boosters: Unlock 200+ bite-sized lessons to build your fitness IQ and make informed decisions about your health. One App is All You Need - AI Fitness & Nutrition Assistant: Get personalized answers to your fitness and nutrition questions, as if you're talking directly to Jeremy Ethier. - Muscle Group Prioritizer: Focus on specific muscles that need extra attention for balanced development. - Recomp Detector: Track simultaneous fat loss and muscle gain with our advanced body composition analysis. - Step Tracking and Daily Activity Goals: Seamlessly integrate with Apple Health and Google Fit to optimize your overall activity levels. We've combined cutting-edge technology with years of scientific research to create an app that delivers real, lasting transformations. No more guesswork, no more wasted time in the gym. BWS+ provides the structure and guidance you need to finally achieve the body you deserve. Download now and take the first step towards the best version of yourself! This app requires an active BuiltWithScience+ membership or an in-app subscription purchased through the App Store to access its features and content. Subscription details and terms are available within the app.
Restrr
Optimize your strength training and HIIT workouts with a smart rest countdown and automatic set counter. Stay focused with customizable notifications and live activity integration. Train more efficiently and effectively.
- Smart rest countdown
- Automatic set counter
- Live Activities & Dynamic Island integration
- Customizable notifications
- Workout optimization
Read full descriptionHide full description
Tired of guessing your rest periods and losing track of sets? Gym Timer is the essential tool for every serious athlete and gym-goer. Designed to keep your strength training, muscle building, and HIIT workouts on track, our app ensures you make the most of every second. Stop wasting time and start training with purpose. Features That Optimize Your Workout - Smart Rest Countdown: Our clear, easy-to-read rest countdown ensures you hit your next set at the perfect time, every time. - Automatic Set Counter: Focus on your reps, not your count. The app automatically tracks your sets, making your workout seamless. - Live Activities & Dynamic Island: Stay connected to your workout timer directly from your lock screen or Dynamic Island. A quick glance is all you need. - Customizable Notifications: Get notified with a sound or vibration the moment your rest period is over. You'll never miss a beat. Whether you're a beginner or a seasoned lifter, the Gym Rest Timer is the personal coach you've been waiting for. It's more than just a timer—it's your key to a more efficient, focused, and effective workout. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is review sentiment: Built With Science+ at 80% against Restrr's 0%. Built With Science+ also leads on rating (4.8 vs 3.0) and update cadence (every 2 weeks vs every 3 months). Restrr's advantage is monetization model (free with in-app purchases vs subscription). 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. Built With Science+ sells 4 in-app purchases, starting at $29.99 per month and Restrr sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
Built With Science+ holds the better App Store score, 4.8 against 3.0. That said, the two scores are not equally well evidenced: Built With Science+ has 3.9K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 80% of Built With Science+'s written reviews are positive against 0% of Restrr's.
Built With Science+ ships an update every 2 weeks, Restrr every 3 months. The most recent releases landed on September 25, 2026 and September 8, 2026 respectively.
| Parameter | Built With Science+ | Restrr |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (3.9K ratings) — better | 3.0 (2 ratings) |
| Positive reviews | 79.8% of reviews — better | 0.0% of reviews |
| Number of ratings | 3.9K — better | 2 |
| Update frequency | Every 2 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Subscription | Free with in-app purchases — better |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPad |
| Requires iOS | 16.2 — better | 18.5 |
| Further details — not scored | ||
| Size | 233 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Built With Science Holdings Corp | Matija Gunther |
Customer experience
Built With Science+
Restrr
Bugs and requests
Built With Science+
Reported bugs
4 issues- Workout data sometimes gets lost or marked incomplete
- App takes a long time to open
- Login and sign-up issues for existing customers
- Inconsistent exercise recommendations and adjustments
Requested features
5 requests- Add ability to create and save custom recipes
- Integrate with Apple Health and other fitness platforms
- Provide more flexibility in workout scheduling
- Enhance human coaching and support features
- Improve performance and stability
Restrr
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Built With Science+
- Monthly Membership14 Days trial$29.991 Month
- Annual Membership14 Days trial$189.001 Year
- Intermediate Program Unlock$49.00
- Beginner Program Unlock$49.00
Restrr
- Monthly$1.991 Month
- Annual$8.991 Year
- Lifetime$3.99
Questions
Is Built With Science+ free?
Is Restrr free?
Which has better reviews, Built With Science+ or Restrr?
Do Built With Science+ or Restrr have ads?
Which is updated more often, Built With Science+ or Restrr?
Other comparisons















