Nix Solo vs Alleviate Therapy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
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.
- Guided recovery programs
- Plantar fasciitis treatment
- 10 minutes daily commitment
- Expert physical therapy guidance
- Progress tracking
- Pain reduction reporting
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
Nix Solo ships an update every 10 days, Alleviate Therapy monthly. Both last shipped on November 7, 2026.
| Parameter | Nix Solo | Alleviate Therapy |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (69 ratings) — better | 3.4 (11 ratings) |
| Positive reviews | 14.3% of reviews | 27.3% of reviews — better |
| Number of ratings | 69 — better | 11 |
| Update frequency | Every 10 days — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 15.1 |
| Further details — not scored | ||
| Size | 65 MB | 26 MB |
| Age rating | 4+ | 17+ |
| Developer | Nix, Inc. | Alleviate |
Customer experience
Nix Solo
Alleviate Therapy
In-app purchases
Nix Solo
No in-app purchases
Alleviate Therapy
No in-app purchases
Questions
Is Nix Solo free?
Is Alleviate Therapy free?
Which has better reviews, Nix Solo or Alleviate Therapy?
Do Nix Solo or Alleviate Therapy have ads?
Which is updated more often, Nix Solo or Alleviate Therapy?
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