BioForce HRV vs BELLr
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BioForce HRV
This training application helps athletes optimize their performance by measuring heart rate variability. It provides feedback to personalize training volume and intensity for maximum results. Requires a BioForce HRV system purchase and valid account to use.
- Heart rate variability measurement
- Training optimization
- Personalized training volume
- Personalized training intensity
- Feedback for training adjustments
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Do not download this app unless you have already purchased the BioForce HRV system. This download is only for registered customers and cannot be used without a valid account. See website for details. BioForce HRV is a precision training app designed to help athletes, and those that take their fitness seriously, optimize their training through the use of heart rate variability technology. It is able to measure how well the body is responding to a training program and provide feedback that can be used to personalize the training volume and intensity to provide maximum results for that individual.
BELLr
This app helps kettlebell enthusiasts track and improve their swings with automatic counting and detailed analysis. It integrates with Apple Watch Activity Rings to keep you motivated towards your fitness goals.
- Automatic swing and set counting
- Detailed swing analysis
- Swing countdown workout
- Activity Ring integration
- Real-time performance metrics
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BELLr is a kettlebell workout companion built for kettlebell enthusiasts who want to take their training to the next level. Designed by a software engineer who shares a passion for kettlebell training, this app brings a unique approach to tracking and improving your swings. Whether you’re just starting or a seasoned athlete, BELLr provides insights and metrics to help you fine-tune your form and achieve your fitness goals. Features: • Swing Countdown Workout: Start with the “Swing Countdown” workout, where you set a target number of swings and aim to complete them quickly. More workout options will be added in future updates. • Automatic Swing and Set Counting: BELLr uses the power of the Apple Watch’s motion sensors to automatically detect and count your kettlebell swings and sets in real-time. • Detailed Swing Analysis: The app breaks down each swing to calculate exact timing and measure average power during the upswing, providing valuable feedback on your performance. • Activity Ring Integration: Workouts count towards your Apple Watch Activity Rings, keeping you motivated and on track to meet your fitness goals. • Work in Progress: Currently focused on 2-hand swings, with upcoming support for 1-hand swings and snatches. This is an early beta release, and the app is actively being developed in the creator’s spare time. More features and workouts are on the way, with continual updates to enhance the experience. Download BELLr now to start tracking your kettlebell workouts and join the journey as the app evolves!
Screenshots
Verdict
The clearest difference is rating: BELLr at 5.0 against BioForce HRV's 2.8. BELLr also leads on update cadence (every 3 weeks vs every 9 months). BioForce HRV's advantage is ratings volume (8 vs 1) and iOS requirement (8.0 vs 13.0). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.
BELLr holds the better App Store score, 5.0 against 2.8. That said, the two scores are not equally well evidenced: BioForce HRV has 8 ratings behind it against 1, so its average is the more settled of the two.
BioForce HRV ships an update every 9 months, BELLr every 3 weeks. The most recent releases landed on October 6, 2026 and October 4, 2026 respectively.
| Parameter | BioForce HRV | BELLr |
|---|---|---|
| Price | Free | Free |
| Rating | 2.8 (8 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 29.6% of reviews | — |
| Number of ratings | 8 — better | 1 |
| Update frequency | Every 9 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod, Apple Watch — better |
| Requires iOS | 8.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 9 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Performance Sports Inc. | Matt Overholt |
Customer experience
BioForce HRV
BELLr
In-app purchases
BioForce HRV
No in-app purchases
BELLr
No in-app purchases









