Comparison

[solidcore] vs Ultrahuman

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

Head to head
About

[solidcore]

This app allows members to find and book pay-as-you-go fitness classes. Users can connect with friends, see their class schedules, book them into classes, and share their own class activities. Track your fitness journey and stay motivated by seeing your class completion history.

Highlights
  • Find and book classes
  • Pay-as-you-go class sign-ups
  • Connect with friends
  • See friends' class schedules
  • Book friends into classes
  • Share class activities
  • Track class completion
Features
Read full description

Stay connected with [solidcore]. Simply log in or create an account to easily view your studio's schedule and book class! California Privacy Notice: https://privacy.solidcore.co/privacy-policy#california-privacy-notice Do Not Sell My Personal Information: https://privacy.solidcore.co/opt-out See our Privacy Policy to access these links.

About

Ultrahuman

This app synthesizes health data from a smart ring and continuous glucose monitors into actionable scores for sleep, activity, recovery, and metabolic health. It offers deep insights into your body's performance, helping you decode and improve your lifestyle.

Highlights
  • Health monitoring with smart ring
  • Movement Index tracking
  • Sleep Index analysis
  • Recovery metrics
  • Circadian rhythm alignment
  • Metabolic health insights
  • Real-time fitness tracking
Features
Read full description

Ultrahuman helps you measure your health performance by creating a unified dashboard of your health. Using metrics from the Ultrahuman Ring, such as Sleep, Activity, Heart Rate (HR), Heart Rate Variability (HRV), Skin Temperature, and SPO2, we generate actionable scores for sleep quality, physical activity, recovery, and cardiovascular health. This empowers you to decode and effectively improve your health and lifestyle. Additionally, Ultrahuman integrates with continuous glucose monitors, helping you track your glucose control and overall metabolic health in real-time through a daily Metabolic Score. **World-class product design & unmatched comfort** Awarded the renowned Red Dot Design Award, the Ultrahuman introduces the Ring AIR— the world’s lightest smart ring. It's not just a statement of style, it's your all-in-one health tracker. **Key features** 1. Health monitoring with elegance Monitor your sleep, movement, and recovery with the compact and comfortable Ultrahuman smart ring. 2. Innovation in movement Introducing the Movement Index, which redefines moving for better health by tracking steps, frequency of movement, and calorie burn. 3. Sleep decoded Dive deep into your sleep performance with our Sleep Index, analysing sleep stages, nap tracking, and SPO2. 4. Recovery—on your terms Navigate through stress by understanding your body's response with metrics like heart rate variability, skin temperature, and resting heart rate. 5. Harmonised circadian rhythms Align with your circadian clock to enhance energy levels and productivity throughout the day. 6. Smart stimulant use Optimise your stimulant consumption with dynamic windows that aid adenosine clearance and minimise sleep disruption. 7. Real-time fitness tracking Engage with your workouts through live HR, HR zones, calories, and a running map. 8. Group tracking through Zones Stay engaged with friends and family through Zones, sharing and viewing sleep, recovery, and movement data seamlessly. 9. Deep metabolic insights Gain insights into your glucose control and understand the deep-seated impact of food on your body. **Global availability & seamless integration** Get your Ring AIR shipped anywhere in the world and enjoy hassle-free data syncing with Apple Health, keeping all your essential health information centralised and accessible. **Contact info** For any queries or support, please reach out to us at [support@ultrahuman.com]. We are glad to help you. **Legal and safety notice** Ultrahuman provides products and services designed for general fitness and wellness purposes. Ultrahuman's products and services are not intended to treat or diagnose any disease, and should not be any substitute for professional medical advice, diagnosis, or treatment. Terms of Use: https://www.ultrahuman.com/termsAndCondition Disclaimer: Ultrahuman's products and services i.e. Ultrahuman App and Ultrahuman Ring are not medical devices and are only intended to provide general information for users to improve their metabolic fitness and general wellness. The products and services are not intended for disease management, treatment, or prevention, and should not be relied upon for any diagnostic or treatment decision. We do not intend to substitute professional medical opinion on the treatment, diagnosis, prevention or alleviation of diabetes or any other disease or disability. Always consult with a doctor or qualified healthcare professional about any health condition and/or concerns, that you may have. Please do not disregard/delay seeking professional medical advice or treatment because of information read on or accessed through our products and services. Please work with your healthcare professional during the use of the third-party continuous glucose monitoring device (CGM) if you have a health condition. Abbott's CGM sensor has regulatory clearance in select countries, including but not limited to India, UAE, US, UK, EU, Iceland, and Switzerland.

Screenshots

[solidcore]2 screens
Ultrahuman4 screens

Verdict

The call

The clearest difference is in-app purchases: [solidcore] at none against Ultrahuman's 18. [solidcore] also leads on rating (4.9 vs 4.5) and ratings volume (29K vs 8K). Ultrahuman's advantage is update cadence (every 5 days vs every 6 weeks) and review sentiment (47% vs 21%). On price, ads, chart position and iOS requirement 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. Ultrahuman sells 15 in-app purchases, starting at $2.90 per month. [solidcore] asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

[solidcore] holds the better App Store score, 4.9 against 4.5. Both are backed by a comparable volume of ratings — 29K and 8K respectively. Written reviews complicate that: 21% of [solidcore]'s written reviews are positive against 47% of Ultrahuman's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

[solidcore] ships an update every 6 weeks, Ultrahuman every 5 days. Both last shipped on October 16, 2026.

Scorecard7 real differences · 4 level
[solidcore] versus Ultrahuman: the parameters behind the verdict, then further details
Parameter[solidcore]Ultrahuman
PriceFreeFree
Rating4.9 (29K ratings) — better4.5 (8K ratings)
Positive reviews21.1% of reviews46.9% of reviews — better
Number of ratings29K — better8K
Update frequencyEvery 6 weeksEvery 5 days — better
AdsYesYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
Best chart rank#182#179 — better
DevicesiPhone, iPodiPhone, iPad, Mac, Apple TV, Apple Watch — better
Requires iOS15.1 — better16.0
Further details — not scored
Size43 MB658 MB
Age rating4+4+
Developer[solidcore]ULTRAHUMAN HEALTHCARE PRIVATE LIMITED

Customer experience

[solidcore]

All ratings28,950 ratings
Positive97.8%
Neutral0.6%
Negative1.6%
Written reviews247 reviews
Positive21.1%
Neutral9.3%
Negative69.6%

Ultrahuman

All ratings7,954 ratings
Positive87.7%
Neutral3.7%
Negative8.6%
Written reviews1,133 reviews
Positive46.9%
Neutral11.1%
Negative42.0%

User reviews

[solidcore]

From 29K App Store ratings

What we love

  • 🚀 Easy to use
  • 👍 Efficient booking process
  • ⭐ Great workout classes

Room to improve

  • 🐛 Glitchy and slow app
  • 📆 Lack of class package management
  • 🔍 Unclear waitlist information
  • 🔒 Privacy concerns with calendar access

Ultrahuman

From 8K App Store ratings

What we love

  • 🌟 Fantastic insights and data
  • 👍 Helpful for managing health and fitness
  • 🤖 Innovative technology
  • 💯 Life-changing experience
  • 🤩 Amazing app and wearable device

Room to improve

  • 🔌 Battery life issues
  • 🤔 Inaccurate data tracking
  • 🤯 Buggy app and connectivity problems
  • 🤖 Cluttered and confusing interface
  • 🕰️ Slow or unresponsive app

Bugs and requests

[solidcore]

Reported bugs

3 issues
  • Inconsistent class credit tracking
  • Unreliable class cancellation and refund process
  • Frequent crashes and loading issues

Requested features

4 requests
  • Ability to see class package balances
  • Waitlist position visibility
  • Option to add classes to calendar without full access
  • Improved app stability and performance

Ultrahuman

Reported bugs

5 issues
  • Frequent disconnections between ring and app
  • Inaccurate sleep and activity tracking
  • Firmware update issues causing data loss
  • Unreliable customer support and long response times
  • Compatibility problems with newer iOS versions

Requested features

5 requests
  • More customization options
  • Better integration with other apps and devices
  • Improved food tracking and logging
  • Enhanced workout tracking and analysis
  • Offline mode for app usage

In-app purchases

None

[solidcore]

No in-app purchases

15 purchases

Ultrahuman

Subscriptions13
  • Cardio Adaptability - Monthly3 Days trial$2.901 Month
  • Cycle & Ovulation Monthly7 Days trial$3.991 Month
  • Respiratory Health - Monthly3 Days trial$3.991 Month
Show 10 more
  • UltraSync with Tesla - Monthly3 Days trial$6.901 Month
  • Ultrahuman Max7 Days trial$9.991 Month
  • Cardio Adaptability - Yearly$24.001 Year
  • Monthly$24.991 Month
  • UltrahumanX$29.991 Year
  • UltrahumanX - 1 year$36.001 Year
  • Cycle & Ovulation Yearly$39.991 Year
  • Respiratory Health PowerPlug-Yearly$39.991 Year
  • UltraSync with Tesla - Yearly7 Days trial$69.001 Year
  • Ultrahuman Max14 Days trial$99.991 Year
One-time2
  • Cardio Adaptability - 2 years$38.00
  • UltrahumanX - 2 years$54.00

Questions

Is [solidcore] free?
[solidcore] is free to download, with no in-app purchases.
Is Ultrahuman free?
Ultrahuman is free to download, with in-app purchases available.
Which has better reviews, [solidcore] or Ultrahuman?
[solidcore] is rated higher. [solidcore] averages 4.9 out of 5 from 29K ratings, while Ultrahuman averages 4.5 from 8K ratings.
Do [solidcore] or Ultrahuman have ads?
Both [solidcore] and Ultrahuman show ads.
Which is updated more often, [solidcore] or Ultrahuman?
[solidcore] ships an update every 6 weeks, and Ultrahuman every 5 days. Most recently, [solidcore] was updated on October 16, 2026 and Ultrahuman on October 16, 2026.
Which is more popular, [solidcore] or Ultrahuman?
[solidcore] currently peaks at #182 in the App Store charts, and Ultrahuman at #179. Chart position reflects recent download velocity rather than total install base.

Other comparisons