Comparison

STIM onTrack vs HFX

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

STIM onTrack

This app helps patients manage their bone growth therapy device daily as prescribed by their physician. It offers treatment reminders, a daily calendar, and integration with health tracking apps. Users can also access educational content and connect with support.

Highlights
  • Daily treatment reminders
  • Device display
  • Daily treatment calendar
  • Health app integration (Apple Health, Fitbit, Garmin)
  • One-touch calling to support
  • Message patient care
  • Access to FAQs and educational content
Read full description

The STIM onTrack™ mobile app provides tools and information for patients to help them use their bone growth therapy device daily as prescribed by their physician. STIM onTrack app features for patients: • Create daily treatment reminders • View your treatment as shown on your connected device • Track treatment history with a daily treatment calendar • Sync with activity trackers to view Step and Resting Heart Rate averages • Connect with an Orthofix Sales Rep or Patient Services with one-touch calling • Send in-app messages to Patient Care • Access answers to commonly asked questions • Learn how Orthofix Bone Growth Stimulation Therapy devices support fracture healing and spinal fusion success rates • Complete a standardized Patient Reported Outcomes Measure (PROM) questionnaire and Patient Experience Survey For more information, visit BoneGrowthTherapy.com STIM onTrack mobile app is available in English, French, and Spanish and distributed in the U.S. and Canada. STIM onTrack mobile app does not share any data with third-party data brokers, and does not use any linked third-party data for marketing or advertising purposes. While accessing web content in the app the cookies are not collected by the app or service. Orthofix products or services referenced herein are trademarks or registered trademarks of Orthofix Medical Inc. and its group of companies. Any rights not expressly granted herein are reserved.

About

HFX

Manage chronic pain with personalized relief. This app pairs with a spinal cord stimulator to learn your pain patterns and deliver tailored therapy. It offers features like progress tracking, favorite program saving, and proactive patient support.

Highlights
  • Personalized pain relief recommendations
  • Proactive patient support
  • Save favorite therapy programs
  • Track pain relief progress
  • Earn achievement badges
  • Check device battery level
  • Enable MRI Mode
Read full description

There's now a better way to manage your chronic pain. The HFX App pairs with the Nevro HFX iQ spinal cord stimulator to learn from your unique pain and deliver personalized pain relief from your smartphone. Join over 100,000 people who have been treated with HFX therapy. The HFX App is easy to use:   1. You complete simple check-ins  2. HFX iQ learns from your unique pain experience  3. Get your personalized recommendation  With the HFX App you can:   Get continuous pain relief.   HFX iQ will learn from your inputs, preferences, and unique pain experience to deliver personalized pain relief.   Receive proactive patient support within 24 hours. The HFX App will send alerts to your Nevro Care Team so they can proactively reach out to provide support when you need it.    Save your favorite programs.  Bookmark your favorite programs that you like to use or want to easily return to. You can personalize your favorites by giving it a name like “walking” and selecting a color.  Track your progress.  Better understand your pain level trends, review your relief over time, and how your pain responded to past programs.   Earn badges.  Collect badges as you complete goals, achieve more pain relief, or reach a milestone.   Check your battery level.  Your battery level is conveniently displayed on your Home screen. When your battery is low or empty, you will get a notification to recharge.   Safely get an MRI scan.*  Easily turn on MRI Mode so you can safely get a full-body MRI scan.     *Within conditional parameters. Refer to https://www.nevro.com/English/us/patients/patient-manuals/default.aspx  for detailed information on MRI safety and conditions.  ________________________________________  The HFX App will work on select Apple devices: iPhone 8 and above running iOS 15 or later. To view the list of compatible devices, go to https://www.NevroHFX.com/resources/hfx-app/ The HFX App is approved for use with the Nevro HFX iQ Spinal Cord Stimulator within the U.S., English Only.  The HFX App controls an implanted medical device only available if prescribed by a physician. You should consult your physician before using the Nevro HFX iQ Spinal Cord Stimulator (including the HFX App) or making medical decisions.  The HFX App can change your HFX iQ therapy settings; use only as directed by your Nevro Care Team or physician.  Nevro Corp. 1800 Bridge Parkway Redwood City, CA 94065 U.S.A.  Provider and Patient MRI Questions p: +1-888-895-8105  HFX, the HFX logo, HFX iQ, the HFX iQ logo, NEVRO, and the NEVRO logo are trademarks or registered trademarks of Nevro Corp. iPhone is a registered trademark of Apple, Inc.  Bluetooth is a registered trademark of Bluetooth SIG, Inc. and Nevro’s use is under license.

Screenshots

STIM onTrack3 screens
HFX4 screens

Verdict

The call

The clearest difference is review sentiment: STIM onTrack at 80% against HFX's 12%. STIM onTrack also leads on rating (4.6 vs 3.5) and ratings volume (7.5K vs 71). On price, update cadence, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

STIM onTrack holds the better App Store score, 4.6 against 3.5. That said, the two scores are not equally well evidenced: STIM onTrack has 7.5K ratings behind it against 71, so its average is the more settled of the two. Written reviews point the same way: 80% of STIM onTrack's written reviews are positive against 12% of HFX's.

UpkeepUpdate frequency

STIM onTrack ships an update every 5 months, HFX every 3 months. The most recent releases landed on September 25, 2026 and September 22, 2026 respectively.

Scorecard3 real differences · 7 level
STIM onTrack versus HFX: the parameters behind the verdict, then further details
ParameterSTIM onTrackHFX
PriceFreeFree
Rating4.6 (7.5K ratings) — better3.5 (71 ratings)
Positive reviews79.8% of reviews — better12.1% of reviews
Number of ratings7.5K — better71
Update frequencyEvery 5 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS16.615.0 — better
Further details — not scored
Size51 MB59 MB
Age rating4+17+
DeveloperOrthofix, IncNevro Corp.

Customer experience

STIM onTrack

All ratings5,922 ratings
Positive88.3%
Neutral6.0%
Negative5.7%
Written reviews495 reviews
Positive79.8%
Neutral9.3%
Negative10.9%

HFX

All ratings71 ratings
Positive56.3%
Neutral8.5%
Negative35.2%
Written reviews58 reviews
Positive12.1%
Neutral29.3%
Negative58.6%

Bugs and requests

STIM onTrack

Reported bugs

4 issues
  • App frequently crashes or resets
  • Inconsistent data tracking and syncing
  • Incorrect battery level reporting
  • Calendar not accurately reflecting usage

Requested features

5 requests
  • Add ability to edit/correct data entries
  • Improve app stability and connectivity
  • Implement better battery life management
  • Enhance user interface and ergonomics
  • Allow more flexibility in treatment scheduling

HFX

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

STIM onTrack

No in-app purchases

None

HFX

No in-app purchases

Questions

Is STIM onTrack free?
STIM onTrack is free to download, with no in-app purchases.
Is HFX free?
HFX is free to download, with no in-app purchases.
Which has better reviews, STIM onTrack or HFX?
STIM onTrack is rated higher. STIM onTrack averages 4.6 out of 5 from 7.5K ratings, while HFX averages 3.5 from 71 ratings.
Do STIM onTrack or HFX have ads?
Neither STIM onTrack nor HFX shows ads.
Which is updated more often, STIM onTrack or HFX?
STIM onTrack ships an update every 5 months, and HFX every 3 months. Most recently, STIM onTrack was updated on September 25, 2026 and HFX on September 22, 2026.

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