SOLTEC vs Halo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SOLTEC
This app analyzes your sleep cycles to help you regain Delta sleep and improve overall sleep quality. It also offers relaxation sessions for stress relief during the day. Track your progress and observe improvements with system use.
- Sleep cycle analysis
- Delta sleep improvement
- Z•TRACK™ Analyst
- Relaxation sessions
- Stress relief
- Progress tracking
Read full descriptionHide full description
SOLTEC•Z™ provides an in-depth view of the SOLTEC•HEALTH™ System that works while you sleep to support your natural sleep cycles. Regain Delta sleep, the most important stage of sleep. Evaluate the quality of your sleep with the Z•TRACK™ Analyst and observe improvement in sleep provided by system use. Use during your day for relief from stress by running a Relaxation Session, provided in the Relax section of the app. It's easy to use and can be run while working, gaming, reading or watching TV. Naturally, the best results will come from a session devoted to pure relaxation. Others have found that running relaxation sessions during the day leads to more favorable results in overall sleep scores. You can track your own progress with this app.
Halo
This app uses a wearable device to deliver gentle electrical currents to the brain, aiming to improve mood, sleep, and focus. It guides users through sessions, tracks progress, and offers educational content for wellness goals.
- Transcranial direct current stimulation (tDCS)
- Mood improvement
- Better sleep support
- Enhanced focus
- Usage tracking
- Educational content
Read full descriptionHide full description
Improved mood. Better sleep. Sharper focus. Clinically tested. Halo is a wellness device and companion app that uses transcranial direct current stimulation (tDCS) to support mood, sleep, and focus. It delivers low-level electrical currents to the prefrontal cortex - an area of the brain linked to emotional regulation, sleep quality, and attention control. The Halo app guides you through stimulation sessions, tracks your usage, and offers regular check ins and educational content to help reach your wellness goals. Developed by the team behind Flow Neuroscience, a leader in clinical brain stimulation. Halo is built on Flow’s proven brain stimulation platform - technology that’s supported thousands of people in Europe. What Halo helps with: * Improving your mood * Better sleep so you wake feeling more refreshed * Enhance your focus so you perform better at work and day to day * Building better routines that align with your goals How does Halo work? Halo is a brain stimulation wearable that uses transcranial direct current stimulation (tDCS). It delivers gentle, low-intensity electrical currents to the prefrontal cortex, a region of the brain involved in cognitive and emotional processes. Who it's for: * Wellness-focused individuals seeking safe, natural tools * Anyone looking to improve their mood, sleep or focus. * High-performers, creatives, and biohackers Halo is a general wellness product designed to support wellbeing. Halo is not approved or cleared by the FDA and is not intended, marketed, or sold to treat or cure any disease or condition. Halo is intended for use by healthy adult individuals. At this time, Halo is only available for shipment within the United States.
Screenshots
Verdict
The clearest difference is rating: Halo at 5.0 against SOLTEC's 4.2. Halo also leads on ads (none vs shown) and monetization model (free vs ad-supported). SOLTEC's advantage is update cadence (every 2 weeks vs every 2 months) and ratings volume (6 vs 2). On price, review sentiment, 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.
Halo holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 6 and 2 respectively. Written reviews split almost evenly too, at 50% and 50% positive.
SOLTEC ships an update every 2 weeks, Halo every 2 months. The most recent releases landed on October 9, 2026 and October 1, 2026 respectively.
| Parameter | SOLTEC | Halo |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (6 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 50.0% of reviews | 50.0% of reviews |
| Number of ratings | 6 — better | 2 |
| Update frequency | Every 2 weeks — better | Every 2 months |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 38 MB | 176 MB |
| Age rating | 4+ | 17+ |
| Developer | Round River Research Corporation | Flow Neuroscience AB |
Customer experience
SOLTEC
Halo
In-app purchases
SOLTEC
No in-app purchases
Halo
No in-app purchases








