Comparison

SOLTEC vs Halo

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

Head to head
About

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.

Highlights
  • Sleep cycle analysis
  • Delta sleep improvement
  • Z•TRACK™ Analyst
  • Relaxation sessions
  • Stress relief
  • Progress tracking
Features
Read 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.

About

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.

Highlights
  • Transcranial direct current stimulation (tDCS)
  • Mood improvement
  • Better sleep support
  • Enhanced focus
  • Usage tracking
  • Educational content
Read 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

SOLTEC4 screens
Halo4 screens

Verdict

The call

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

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

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 5 level
SOLTEC versus Halo: the parameters behind the verdict, then further details
ParameterSOLTECHalo
PriceFreeFree
Rating4.2 (6 ratings)5.0 (2 ratings) — better
Positive reviews50.0% of reviews50.0% of reviews
Number of ratings6 — better2
Update frequencyEvery 2 weeks — betterEvery 2 months
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supportedFree — better
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size38 MB176 MB
Age rating4+17+
DeveloperRound River Research CorporationFlow Neuroscience AB

Customer experience

SOLTEC

All ratings6 ratings
Positive83.3%
Neutral0.0%
Negative16.7%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Halo

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

None

SOLTEC

No in-app purchases

None

Halo

No in-app purchases

Questions

Is SOLTEC free?
SOLTEC is free to download, with no in-app purchases.
Is Halo free?
Halo is free to download, with no in-app purchases.
Which has better reviews, SOLTEC or Halo?
Halo is rated higher. SOLTEC averages 4.2 out of 5 from 6 ratings, while Halo averages 5.0 from 2 ratings.
Do SOLTEC or Halo have ads?
SOLTEC shows ads; Halo does not.
Which is updated more often, SOLTEC or Halo?
SOLTEC ships an update every 2 weeks, and Halo every 2 months. Most recently, SOLTEC was updated on October 9, 2026 and Halo on October 1, 2026.

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