Comparison

NeckCheck_v1 vs Solius

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

Head to head
About

NeckCheck_v1

This app helps you maintain good posture, especially when using screens. It provides customizable real-time feedback and reminders to prevent neck strain and improve sitting habits for users of all ages.

Highlights
  • Customizable vibration, visual, or message alerts
  • Child mode with password lock
  • Adjustable angle tolerance and real-time feedback
  • Customizable reminder and timeout timers
  • Save settings for consistent use
Features
Read full description

Neck Check is a simple and effective app designed to help you maintain healthy posture, especially while using screens. Whether for kids or adults, the app offers customizable settings and real-time feedback to prevent neck strain and improve your sitting habits. Key Features: • Custom Alerts: Choose vibration, visual, or message reminders to alert you when your posture goes out of alignment. • Child Mode: Lock settings with a password when the device is used by a child, ensuring they don’t bypass reminders. • Adjustable Angle Tolerance: Set your preferred neck angle range (typically 45°–65°) with real-time angle feedback to find the right posture. • Reminder Timer: Customize how long poor posture is allowed before a warning appears (30–60 seconds recommended). • Timeout Control: Choose how long reminders remain active before resetting (10 seconds recommended). • Save Settings: Press “SAVE” to keep your preferences secure and consistent. Designed for all ages, Neck Check empowers users to build better posture habits—one gentle reminder at a time.

About

Solius

This app pairs with a UVB light therapy device to deliver personalized doses of UVB light based on your skin tone. It offers guided sessions, reminders, and progress tracking for year-round health benefits. The device is FDA-cleared and requires no prescription.

Highlights
  • Personalized UVB dosing based on skin tone
  • FDA-cleared over-the-counter device
  • Short weekly sessions (approx. 5 minutes)
  • Guided session setup and safety checks
  • Weekly reminders and progress tracking
  • Therapy history and trends
Features
Read full description

A smarter, safer way to stimulate the UVB health benefits of the sun is finally here. Solius is the only FDA-cleared over-the-counter UVB light therapy device that analyzes your unique skin tone to deliver a precise, optimal dose of UVB light, activating the natural health benefits of the sun with less than 1% of the total UV risk. The Solius app pairs with a Solius device, which is required for use and is sold separately at solius.com. PERSONALIZED DOSING FOR YOUR SKIN Solius scans your skin with a built-in sensor and automatically calculates a dose designed for your unique tone, so every session delivers an optimal dose of UVB light therapy. FDA-CLEARED, NO PRESCRIPTION NEEDED Solius is the only UVB light therapy device cleared by the FDA for over-the-counter use, reviewed under the Class II medical device pathway for safety, performance, and quality. APPROXIMATELY FIVE MINUTES, ONCE A WEEK A single short session, once per week, is designed to maintain the UVB light-driven benefits your body relies on year round, regardless of season, weather, or where you live. GUIDED SESSION FLOW Step-by-step in-app guidance walks you through positioning, session length, and safety checks to ensure you get the full benefit of each dose without guesswork. STREAKS AND WEEKLY REMINDERS Smart reminders nudge you when it's time for your next dose. Weekly streaks and progress views help consistency turn into results and whole body benefits. THERAPY HISTORY AND TRENDS Review every session at a glance: date, duration, dose, and therapy timespan. SAFETY The Solius dosing sensor calculates an optimal safe dose. A full year of weekly Solius therapy adds up to less total UV than about five minutes of natural midday sun. HOW IT WORKS 1. Download the Solius app and create an account, allowing you to pair with your Bluetooth® connected Solius device to complete set up and control your device. 2. Set up anytime, anywhere: Solius is easy to set up, no mounting or installation required. 3. Personalize your dose: The Solius app guides you through smart skin analysis to calculate your optimal dose. 4. Repeat therapy weekly: Use Solius for approximately five minutes a week to maximize year-round benefits. INDICATION FOR USE Solius is an over-the-counter (OTC) light panel intended to stimulate production of Vitamin D in people 22 years and older. CONTRAINDICATIONS FOR USE Do not use Solius if: - You have a history of underlying photosensitivity. - You currently use any of the following photosensitizing medications orally or topically on the therapy area (back of torso from waist to neck): anti-convulsant, amiodarone, doxycycline, hydrochlorothiazide, methotrexate, naproxen, sulfa antibiotics, tetracycline, or tretinoin. - You have been or become diagnosed with sensitivity or allergies to light affecting your skin, including but not limited to: actinic prurigo, chronic actinic dermatitis, lupus erythematosus, photodermatitis, polymorphous light eruption, protoporphyria, solar urticaria, UV-sensitive syndrome, vitiligo, or xeroderma pigmentosum. DISCLAIMER Solius is clinically proven to stimulate the production of vitamin D. References to the benefits of sunlight, UVB light, and vitamin D are based upon published, peer-reviewed research. The Solius device is not intended to diagnose, treat, cure, or prevent disease, except for the indications for use described in the user manual for your applicable region. Solius does not provide specific medical advice to users. Users should seek advice from a qualified physician or healthcare provider. This app does not establish a doctor-patient relationship. For detailed product information please consult the User Manual prior to use. Have questions? We’re here to help. Email us at support@solius.com. Privacy Policy: solius.com/legal/privacy-policy

Screenshots

NeckCheck_v14 screens
Solius4 screens

Verdict

The call

The clearest difference is price: Solius at Free against NeckCheck_v1's $1.99. Solius also leads on ratings volume (70 vs 3). NeckCheck_v1's advantage is iOS requirement (15.6 vs 17.0). On rating, 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

Solius is free to download; NeckCheck_v1 costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for NeckCheck_v1 against 5.0 for Solius. That said, the two scores are not equally well evidenced: Solius has 70 ratings behind it against 3, so its average is the more settled of the two.

UpkeepUpdate frequency

NeckCheck_v1 ships an update fortnightly, Solius every 3 weeks. The most recent releases landed on October 16, 2026 and October 18, 2026 respectively.

Scorecard4 real differences · 6 level
NeckCheck_v1 versus Solius: the parameters behind the verdict, then further details
ParameterNeckCheck_v1Solius
Price$1.99Free — better
Rating5.0 (3 ratings)5.0 (70 ratings)
Positive reviews—100.0% of reviews
Number of ratings370 — better
Update frequencyFortnightly — betterEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.6 — better17.0
Further details — not scored
Size32 MB237 MB
Age rating12+4+
DeveloperRespond LLCSolius Labs, Inc.

Customer experience

NeckCheck_v1

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

Solius

All ratings70 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews31 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

NeckCheck_v1

No in-app purchases

None

Solius

No in-app purchases

Questions

Is NeckCheck_v1 free?
NeckCheck_v1 costs $1.99, with no in-app purchases.
Is Solius free?
Solius is free to download, with no in-app purchases.
Which has better reviews, NeckCheck_v1 or Solius?
NeckCheck_v1 and Solius are both rated 5.0 out of 5 on the App Store, from 3 and 70 ratings respectively.
Do NeckCheck_v1 or Solius have ads?
Neither NeckCheck_v1 nor Solius shows ads.
Which is updated more often, NeckCheck_v1 or Solius?
NeckCheck_v1 ships an update fortnightly, and Solius every 3 weeks. Most recently, NeckCheck_v1 was updated on October 16, 2026 and Solius on October 18, 2026.

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