# NXTSTIM vs HFX

The clearest difference is review sentiment: NXTSTIM at 67% against HFX's 12%. NXTSTIM also leads on rating (3.6 vs 3.0) and update cadence (every 3 weeks vs every 3 months). HFX's advantage is ratings volume (164 vs 14). On price, ads, in-app purchases and monetization model there is nothing between them.

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

NXTSTIM holds the better App Store score, 3.6 against 3.0. That said, the two scores are not equally well evidenced: HFX has 164 ratings behind it against 14, so its average is the more settled of the two. Written reviews point the same way: 67% of NXTSTIM's written reviews are positive against 12% of HFX's.

NXTSTIM ships an update every 3 weeks, HFX every 3 months. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | NXTSTIM | HFX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (14 ratings)](https://appshunter.io/ios/app/nxtstim/id1595727578/reviews)** | [3.0 (164 ratings)](https://appshunter.io/ios/app/hfx/id6443477068/reviews) |
| Number of ratings | 14 | **164** |
| Positive reviews | **66.7% of reviews** | 12.1% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | Free | Free |
| Size | 33 MB | 59 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [NXTSTIM LLC](https://appshunter.io/developer/1595727580) | [Nevro Corp.](https://appshunter.io/developer/1613247836) |

## What reviewers say

### NXTSTIM

[App page](https://appshunter.io/ios/app/nxtstim/id1595727578)

This app offers AI-powered pain relief and therapy through a connected medical device. It provides personalized treatment plans for pain, strengthening, and relaxation, with features for tracking and optimizing your recovery. Consult a doctor before use.

**Highlights:** AI-powered pain relief, Personalized therapy procedures, Pain relief, strengthening, and relaxation, Outcome-oriented therapy experience, Personalized therapy tracking, Multiple device therapy support

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### HFX

[App page](https://appshunter.io/ios/app/hfx/id6443477068)

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

**In-app purchases:** none

**What reviewers like**

- 👍 Provides real relief
- 👍 Improves quality of life
- 👍 Device is terrific
- 👍 Great app
- 👍 Love the app and team

**What reviewers complain about**

- 🐛 Buggy with connection issues
- 🐛 Stopped connecting entirely
- 🐛 App is a piece of trash
- 🐛 White screen issue
- 🐛 Repetitive app issues

**Reported bugs**

- Connection issues
- Stopped connecting
- Bluetooth connection problems
- White screen
- App not loading

**Requested features**

- Dark mode option
- Add an option to write notes
- Improve battery percentage display
- Improve pain rating system
- Add percentage to battery meter


## Frequently asked questions

### Is NXTSTIM free?

NXTSTIM 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, NXTSTIM or HFX?

NXTSTIM is rated higher. NXTSTIM averages 3.6 out of 5 from 14 ratings, while HFX averages 3.0 from 164 ratings.

### Do NXTSTIM or HFX have ads?

Neither NXTSTIM nor HFX shows ads.

### Which is updated more often, NXTSTIM or HFX?

NXTSTIM ships an update every 3 weeks, and HFX every 3 months. Most recently, NXTSTIM was updated on October 24, 2026 and HFX on October 22, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*