Comparison

NXTSTIM vs 528i

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

Head to head
About

NXTSTIM

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
Read full description

NXTSTIM is a cutting edge therapeutic solution for the optimal pain relief outcome powered by proprietary and proven AI technology. The NXTSTIM App needs to work with FDA cleared NXTSTIM medical device UPK-GE01 with the brand of EcoAI. The App provides personalized pain therapy procedure with comprehensive pain relief, strengthening and relaxation to suit your particular condition. The therapy procedure is made to be the best outcome-oriented therapy experience, driven by a close-loop process with personalized therapy tracking, reminding, periodic review and continuous optimization. It makes therapy much easier, simpler and more enjoyable. It also support multiple device therapy on multiple pain spots on the body. Please be reminded to seek a doctor’s advice first before making any medical decisions including the use of this app and the EcoAI medical device.

About

528i

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
Read full description

528i – Smart Laser Therapy, Simplified Take the guesswork out of light therapy with the 528i Mobile App—your interactive guide for clinical-grade precision wellness at home. Designed to pair with the 5i Series Laser Therapy System, the app delivers real-time support and step-by-step guidance to maximize the benefits of photobiomodulation (PBM) and low-level laser therapy (LLLT). Features: * Smart Guidance: Follow clear, step-by-step instructions for optimal timing, frequency, and targeted laser application. * Interactive Support: Access instructional videos and guided therapy techniques tailored to your program. * Wavelength Insights: Explore a full list of recommended wavelengths for each preset and program to enhance therapy results. * Device Connectivity: Sync effortlessly with your 528i laser device for a fully integrated experience. The 5i Series system is FDA-cleared in the United States. The 5i Series system features clinical-grade Class 3R laser technology designed for safe, effective use in the comfort of your home. Proven benefits include relief from pain, improved blood circulation, reduced inflammation, and muscle relaxation. Whether you’re new to light therapy or seeking advanced precision, the 528i app empowers your wellness journey with clarity, confidence, and results. DISCLAIMER: This application is intended for informational purposes only and does not constitute medical advice, diagnosis, or treatment. Always seek the guidance of your physician or other qualified health provider with any questions you may have regarding a medical condition. Do not disregard professional medical advice or delay in seeking it because of information provided by this app.

Screenshots

NXTSTIM3 screens
528i4 screens

Verdict

The call

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.

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

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.

UpkeepUpdate frequency

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

Scorecard4 real differences · 6 level
NXTSTIM versus 528i: the parameters behind the verdict, then further details
ParameterNXTSTIM528i
PriceFreeFree
Rating3.6 (14 ratings)5.0 (3 ratings) — better
Positive reviews66.7% of reviews
Number of ratings14 — better3
Update frequencyMonthlyFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS12 — better14.0.0
Further details — not scored
Size48 MB35 MB
Age rating12+17+
DeveloperNXTSTIM LLC528 INNOVATIONS LLC

Customer experience

NXTSTIM

All ratings14 ratings
Positive64.3%
Neutral7.1%
Negative28.6%
Written reviews9 reviews
Positive66.7%
Neutral11.1%
Negative22.2%

528i

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

NXTSTIM

No in-app purchases

None

528i

No in-app purchases

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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