# Built With Science+ vs Restrr

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.

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.

## The numbers

| Metric | Built With Science+ | Restrr |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (3.9K ratings)](https://appshunter.io/ios/app/built-with-science-plus/id6446000532/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/restrr-gym-rest-timer/id6478751420/reviews) |
| Number of ratings | **3.9K** | 2 |
| Positive reviews | **79.8% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 months |
| Monetization | Subscription | **Free with in-app purchases** |
| Size | 233 MB | 19 MB |
| Requires iOS | **16.2** | 18.5 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Built With Science Holdings Corp](https://appshunter.io/developer/1559732895) | [Matija Gunther](https://appshunter.io/developer/1733805006) |

## What reviewers say

### Built With Science+

[App page](https://appshunter.io/ios/app/built-with-science-plus/id6446000532)

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.

**Highlights:** Hyper-Personalized Workouts, Progressive Overload Guidance, Real-Time Diet Adjustments, AI-Powered Meal Scanner, 250+ Exercise Tutorials, Daily Knowledge Boosters, AI Fitness & Nutrition Assistant

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Membership | $29.99 | per month |
| Annual Membership | $189.00 | per year |
| Intermediate Program Unlock | $49.00 | one-time |
| Beginner Program Unlock | $49.00 | one-time |

**What reviewers like**

- 👍 Comprehensive fitness and nutrition tracking
- 🚀 Convenient all-in-one app
- 📚 Helpful educational lessons
- 💪 Science-backed program
- 🎯 Customized and adaptive workouts

**What reviewers complain about**

- 🐛 Occasional performance issues and bugs
- 🔍 Limited food database and recipe options
- 📱 Lack of integration with other fitness apps and devices
- 🕰️ Inflexible workout scheduling
- 💬 Limited human interaction and coaching support

**Reported bugs**

- 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**

- 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

[App page](https://appshunter.io/ios/app/restrr-gym-rest-timer/id6478751420)

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.

**Highlights:** Smart rest countdown, Automatic set counter, Live Activities & Dynamic Island integration, Customizable notifications, Workout optimization

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Annual | $8.99 | per year |
| Lifetime | $3.99 | one-time |


## Frequently asked questions

### Is Built With Science+ free?

Built With Science+ is free to download, with in-app purchases available.

### Is Restrr free?

Restrr is free to download, with in-app purchases available.

### Which has better reviews, Built With Science+ or Restrr?

Built With Science+ is rated higher. Built With Science+ averages 4.8 out of 5 from 3.9K ratings, while Restrr averages 3.0 from 2 ratings.

### Do Built With Science+ or Restrr have ads?

Neither Built With Science+ nor Restrr shows ads.

### Which is updated more often, Built With Science+ or Restrr?

Built With Science+ ships an update every 2 weeks, and Restrr every 3 months. Most recently, Built With Science+ was updated on September 25, 2026 and Restrr on September 8, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*