NM HRV vs Protocol For Business
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
NM HRV
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This application allows you to connect with and use Frontier X - a revolutionary new wearable device that monitors your lungs and heart. Once you download this application on your iPhone, this will allow you to view your real-time data if you exercise with the Frontier X device. In order to use this application, you need to have the Frontier X device, available at fourthfrontier.com. Frontier X integrates with HealthKit to export your Frontier X activities into the Health app and to read heart rate and biometric data. The Frontier X is a chest-worn device that has the following features: Suitable for recording during Rest, Sleep and Activity. Real-time vibration alerts when you cross your Heart Rate thresholds Easy to use. Strap on and start. Sync later View quick activity summary on device screen Highly accurate Heart Rate data Apps available for iOS. IP67 Waterproof up to 1.5 M Battery: 14+ days of typical use, up to 24-hrs continuous use
Protocol For Business
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Companion app to the Protocol Grip Trainer, a grip trainer device which uses Bluetooth to record workouts to your phone. Let your customers test their grip strength and stability with Protocol Grip Trainer! You must have a valid transaction ID code to use!
Screenshots
Verdict
NM HRV and Protocol For Business are too close to call on the numbers: across 6 compared parameters โ price, update cadence, ads and in-app purchases among them โ neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
NM HRV ships an update fortnightly, Protocol For Business every 8 days. The most recent releases landed on October 3, 2026 and September 29, 2026 respectively.
| Parameter | NM HRV | Protocol For Business |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly | Every 8 days โ better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.5 โ better | 16.6 |
| Further details โ not scored | ||
| Size | 85 MB | 31 MB |
| Age rating | 12+ | 4+ |
| Developer | Fourthfrontier | Sawyer Blankenship |
In-app purchases
NM HRV
No in-app purchases
Protocol For Business
No in-app purchases
Questions
Is NM HRV free?
Is Protocol For Business free?
Do NM HRV or Protocol For Business have ads?
Which is updated more often, NM HRV or Protocol For Business?
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