BioForce HRV vs Stretch Timer
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.
Stretch Timer
This app provides a simple, repeating timer for stretching that runs in the background on your Apple Watch. It guides you through custom stretch and rest periods with gentle sound or haptic cues, allowing you to multitask with other activities.
- Background timer for multitasking
- Tap to start/stop
- Custom stretch and rest intervals
- Haptic and sound alerts
- Repeat count tracking
- Countdown for final seconds
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Stretch while you stream, scroll, or listen to a podcast. Free, with no ads. GetFlexy is the dead-simple repeating stretch timer that runs in the background on your Apple Watch while you do anything else. Just tap to start, and the app will guide you through rounds of stretching and rest using gentle sounds or haptics, your choice. No playlist, no program, and nothing to fuss with. It’s built for podcasting, binge-watching, and getting bendy—without needing to manage a timer or check a screen. Whether you're doing a few stretches during a break or building a more consistent routine, GetFlexy helps you add flexibility to the things you already love doing. FEATURES * Hands-free timing: Timer runs in the background while you do anything else * Tap to Start/Stop: One tap starts your flow, another ends it * Stretch + Rest Timer: Alternate between custom-length stretch and rest periods * Set & forget. Your previous times are saved for next time * Haptics & Sound Alerts: Customize how you want to be cued * Repeat Count: Keep track of how many reps you’ve done * Countdown for the final few seconds of each stretch and rest period * 3-second count up before the first activity begins Scroll, stream, and stretch. Multitask your way to better mobility. ABOUT US Get Flexy is a project by JT & Leslie (aka Tiny Tools Studio), two indie makers who enjoy building simple solutions to everyday problems, and we hope you like them too! We’d love to add some premium features to this app. Let us know if you have any ideas. We’re also here to answer your questions about GetFlexy. Feel free to reach out to us at hello@tinytools.studio
Screenshots
Verdict
The clearest difference is review sentiment: Stretch Timer at 100% against BioForce HRV's 30%. Stretch Timer also leads on rating (5.0 vs 2.8) and update cadence (every 9 days 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.
Stretch Timer 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. Written reviews point the same way: 30% of BioForce HRV's written reviews are positive against 100% of Stretch Timer's.
BioForce HRV ships an update every 9 months, Stretch Timer every 9 days. The most recent releases landed on October 6, 2026 and October 2, 2026 respectively.
| Parameter | BioForce HRV | Stretch Timer |
|---|---|---|
| Price | Free | Free |
| Rating | 2.8 (8 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 29.6% of reviews | 100.0% of reviews — better |
| Number of ratings | 8 — better | 1 |
| Update frequency | Every 9 months | Every 9 days — 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 | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Performance Sports Inc. | Tiny Tools Studio LLC |
Customer experience
BioForce HRV
Stretch Timer
In-app purchases
BioForce HRV
No in-app purchases
Stretch Timer
No in-app purchases
Questions
Is BioForce HRV free?
Is Stretch Timer free?
Which has better reviews, BioForce HRV or Stretch Timer?
Do BioForce HRV or Stretch Timer have ads?
Which is updated more often, BioForce HRV or Stretch Timer?
Other comparisons
