# NXTSTIM vs 528i

The clearest difference is rating: 528i at 5.0 against NXTSTIM's 3.6. 528i also leads on update cadence (fortnightly vs monthly). NXTSTIM's advantage is ratings volume (14 vs 3) and iOS requirement (12 vs 14.0.0). 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.

528i holds the better App Store score, 5.0 against 3.6. Both are backed by a comparable volume of ratings — 14 and 3 respectively.

NXTSTIM ships an update monthly, 528i fortnightly. The most recent releases landed on September 16, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | NXTSTIM | 528i |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.6 (14 ratings)](https://appshunter.io/ios/app/nxtstim/id1595727578/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/528i/id6738430099/reviews)** |
| Number of ratings | **14** | 3 |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | Free | Free |
| Size | 48 MB | 35 MB |
| Requires iOS | **12** | 14.0.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 17+ |
| Developer | [NXTSTIM LLC](https://appshunter.io/developer/1595727580) | [528 INNOVATIONS LLC](https://appshunter.io/developer/1780816602) |

## 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


### 528i

[App page](https://appshunter.io/ios/app/528i/id6738430099)

This app guides users through laser therapy sessions with step-by-step instructions and instructional videos. It connects to a laser device to optimize timing, frequency, and application for photobiomodulation and low-level laser therapy.

**Highlights:** Step-by-step smart guidance, Interactive instructional videos, Wavelength recommendations, Device connectivity, Precision wellness at home

**In-app purchases:** none


## Frequently asked questions

### Is NXTSTIM free?

NXTSTIM is free to download, with no in-app purchases.

### Is 528i free?

528i is free to download, with no in-app purchases.

### Which has better reviews, NXTSTIM or 528i?

528i is rated higher. NXTSTIM averages 3.6 out of 5 from 14 ratings, while 528i averages 5.0 from 3 ratings.

### Do NXTSTIM or 528i have ads?

Neither NXTSTIM nor 528i shows ads.

### Which is updated more often, NXTSTIM or 528i?

NXTSTIM ships an update monthly, and 528i fortnightly. Most recently, NXTSTIM was updated on September 16, 2026 and 528i on June 1, 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.*