Comparison

Nix Solo vs Alleviate Therapy

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

Head to head
About

Nix Solo

Monitor personal fluid and electrolyte losses in real-time during workouts. This app provides insights into sweat composition and hydration needs based on individual biology, using data from a companion biosensor.

Highlights
  • Real-time fluid and electrolyte loss monitoring
  • Personalized sweat composition insights
  • Correlates sweat data with environmental factors (Nix Index)
  • Post-workout Sweat Intelligence reports
  • Integration with Apple Watch and Garmin devices
  • Workout type and hydration input
Features
Read full description

To train at your peak, you can’t just train hard. You need to train in a way that’s informed by your personal biology. The Nix Solo app allows users to monitor their own personal fluid and electrolyte losses in real time during a workout using the Nix Hydration Biosensor. This companion app provides valuable insight into their unique sweat composition and individual hydration needs based on their personal biology. At Nix, we built the first biosensor to analyze sweat and provide endurance athletes with personal hydration data – scientifically validated, and delivered in real time. Once paired with the Nix Hydration Biosensor, you are on your way to understanding your hydration needs with Nix Solo, our individual monitoring app. We’re the first hydration biosensor of its kind — the only pod, patch, and free app combination to: - Evaluate the electrochemical biomarkers in your sweat - Send real-time updates to your phone, Apple Watch, Garmin Watch, or Garmin Bike Computer - Correlate your sweat data and your training environment with the Nix Index – a composite index of six environmental factors: temperature, humidity, dew point, altitude, wind speed, and solar load - Provide post workout Sweat Intelligence via insights on your Sweat Profile including fluid loss rate, electrolyte loss rate and sweat composition metrics Before your workout, tell the Nix Solo app what type of workout you’re doing and what you’ll be hydrating with. You can also consult the Nix Index to see how your environment impacts your hydration needs. Once you start sweating, our single-use patch begins measuring and analyzing your fluid and electrolyte losses minute by minute- metrics that represent your unique “sweat composition.” This data is instantly streamed to our app, and can also be shared with devices like your Apple Watch, Garmin Watch, and Garmin bike computer. The result is knowing when, what, and how much to drink in real time to enhance both safety and performance.

About

Alleviate Therapy

This app offers guided physical therapy programs for injury recovery, focusing on plantar fasciitis. It provides expert-led exercises and progress tracking, allowing users to heal at their own pace with just 10 minutes of daily dedication.

Highlights
  • Guided recovery programs
  • Plantar fasciitis treatment
  • 10 minutes daily commitment
  • Expert physical therapy guidance
  • Progress tracking
  • Pain reduction reporting
Read full description

Embark on a transformative journey to conquer plantar fasciitis and beyond with the Alleviate app. Developed by a dynamic patient-clinician duo, Alleviate challenges the status quo in injury recovery. Our mission is simple: deliver gold-standard Physical Therapy to your fingertips. Key Features: - Proven Outcomes: Users report a remarkable 40% reduction in pain after completing just three levels of our Plantar Fasciitis guided recovery program. - Recovery on Your Terms: Take control of your healing process. Dedicate just 10 minutes a day, anytime, anywhere, and progress at your own pace. - Expert Guidance, Anywhere: The Alleviate App brings the essential trifecta of soft tissue mobilization, load management, and progressive strengthening programs to your doorstep. No more guesswork - our expert guidance is with you every step of the way. - Progress, Demystified: Define your recovery goal, put in the work, and celebrate every win. Our app demystifies progress, making your journey tangible and rewarding.

Screenshots

Nix Solo4 screens
Alleviate Therapy4 screens

Verdict

The call

The clearest difference is rating: Nix Solo at 4.8 against Alleviate Therapy's 3.4. Nix Solo also leads on update cadence (every 10 days vs monthly) and monetization model (free vs ad-supported). Alleviate Therapy's advantage is review sentiment (27% vs 14%). On price, ads, in-app purchases and device support 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

Nix Solo holds the better App Store score, 4.8 against 3.4. That said, the two scores are not equally well evidenced: Nix Solo has 69 ratings behind it against 11, so its average is the more settled of the two. Written reviews complicate that: 14% of Nix Solo's written reviews are positive against 27% of Alleviate Therapy's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Nix Solo ships an update every 10 days, Alleviate Therapy monthly. Both last shipped on November 7, 2026.

Scorecard5 real differences · 5 level
Nix Solo versus Alleviate Therapy: the parameters behind the verdict, then further details
ParameterNix SoloAlleviate Therapy
PriceFreeFree
Rating4.8 (69 ratings) — better3.4 (11 ratings)
Positive reviews14.3% of reviews27.3% of reviews — better
Number of ratings69 — better11
Update frequencyEvery 10 days — betterMonthly
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS15.115.1
Further details — not scored
Size65 MB26 MB
Age rating4+17+
DeveloperNix, Inc.Alleviate

Customer experience

Nix Solo

All ratings61 ratings
Positive93.4%
Neutral3.3%
Negative3.3%
Written reviews21 reviews
Positive14.3%
Neutral14.3%
Negative71.4%

Alleviate Therapy

All ratings11 ratings
Positive54.5%
Neutral9.1%
Negative36.4%
Written reviews11 reviews
Positive27.3%
Neutral9.1%
Negative63.6%

In-app purchases

None

Nix Solo

No in-app purchases

None

Alleviate Therapy

No in-app purchases

Questions

Is Nix Solo free?
Nix Solo is free to download, with no in-app purchases.
Is Alleviate Therapy free?
Alleviate Therapy is free to download, with no in-app purchases.
Which has better reviews, Nix Solo or Alleviate Therapy?
Nix Solo is rated higher. Nix Solo averages 4.8 out of 5 from 69 ratings, while Alleviate Therapy averages 3.4 from 11 ratings.
Do Nix Solo or Alleviate Therapy have ads?
Neither Nix Solo nor Alleviate Therapy shows ads.
Which is updated more often, Nix Solo or Alleviate Therapy?
Nix Solo ships an update every 10 days, and Alleviate Therapy monthly. Most recently, Nix Solo was updated on November 7, 2026 and Alleviate Therapy on November 7, 2026.

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