Comparison

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.

Head to head
About

NM HRV

Features
Read full description

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

About

Protocol For Business

Features
Read full description

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

NM HRV4 screens
Protocol For Business1 screens

Verdict

The call

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

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.

ScorecardNo meaningful differences
NM HRV versus Protocol For Business: the parameters behind the verdict, then further details
ParameterNM HRVProtocol For Business
PriceFreeFree
Update frequencyFortnightlyEvery 8 days โ€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.5 โ€” better16.6
Further details โ€” not scored
Size85 MB31 MB
Age rating12+4+
DeveloperFourthfrontierSawyer Blankenship

In-app purchases

None

NM HRV

No in-app purchases

None

Protocol For Business

No in-app purchases

Questions

Is NM HRV free?
NM HRV is free to download, with no in-app purchases.
Is Protocol For Business free?
Protocol For Business is free to download, with no in-app purchases.
Do NM HRV or Protocol For Business have ads?
Neither NM HRV nor Protocol For Business shows ads.
Which is updated more often, NM HRV or Protocol For Business?
NM HRV ships an update fortnightly, and Protocol For Business every 8 days. Most recently, NM HRV was updated on October 3, 2026 and Protocol For Business on September 29, 2026.

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