Comparison

Opti Calm vs MindViewer

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

Head to head
About

Opti Calm

Train your brain to reach optimal performance patterns with this app. It uses a compatible external brain-sensing accessory to provide visual and audio feedback, guiding you to a state of calm for meditation or high-pressure activities. Improve efficiency and recall your best performance brain patterns.

Highlights
  • Brain activity sensing integration
  • Visual feedback (score, video, brain representation)
  • Audio feedback (music volume)
  • Calm brain training algorithm
  • Performance optimization
  • Meditation and sports training modes
Features
Read full description

**This application requires a subscription with Opti Brain to use. **This application also requires an external accessory that senses your brain activity to use. Compatible brain sensing hardware includes: -Muse Headband, -Smith Lowdown Focus Glasses powered by Muse The brain sensing hardware will connect your brain activity to this app and help you BETTER YOUR BEST™ by training your brain to reach its optimum performance pattern! Visit MyOptiBrain.com and purchase a subscription to learn to reach your optimum potential today! The Opti Calm app is produced by Opti Brain, a company dedicated to performance optimization. Opti Calm features our Calm brain training algorithm. Calm (previously know as Serenity in Opti Train) teaches the brain to decrease in activity. This algorithm is popular for daily meditation because less brain activity is reflected by a clear mind. In addition, this algorithm is popular to train with in high-pressure, performance sports because it can help you create more efficiency in your brain. For example, in a repetitive task such as putting a ball or throwing a pitch your goal while practicing can be to decrease your brain activity which increases the efficiency of your brain. Your goal would be to perform the same motion (with a high success rate) with less thought. Opti Calm offers visual feedback to guide your brain to an optimized brain pattern in the form of a percentage score, a playing/pausing video, or a color-changing brain representation. When the video is playing, when your index is higher, when the brain is completely colored you have found your Calm. Visual feedback is ideal to use while sitting still when you are thinking meditatively about an upcoming performance. Opti Calm also offers audio feedback in the form of music increasing or decreasing in volume to guide your brain. When the music is the most quiet you have found your Calm. It is ideally used while in motion to BETTER YOUR BEST™. For example, let your favorite music (chosen from your personal iTunes library) guide your brain while putting a golf ball, shooting at a target, or throwing a pitch. The more you train with Opti Calm, the easier it will be to identify your best performance brain pattern. Then take your Opti Calm best pattern to your performance. If you don't remember, your brain will! Opti Calm's sister app Opti Brain allows you to view the brain maps from your trainings. When you save a training it becomes available to be mapped in Opti Brain. To see how much Calm was present in your training, select the brain icon featuring the same aqua color theme as Opti Calm on the setup screen in Opti Brain.

About

MindViewer

Understand your mental state during activities like studying, working, or resting. This tool visualizes your attention, relaxation, and mental workload using brain signal data from a compatible sensor.

Highlights
  • Visualize mental states
  • Track attention and relaxation
  • Measure mental workload
  • Analyze brain frequencies (delta, theta, alpha, beta, gamma)
  • Record mental state during activities
  • Compare effectiveness of different activities
Features
Read full description

Do you know if you are focusing well when you are studying, working, or playing? Or if you are relaxing well when you take a few minutes of rest? Now you can with Neeuro MindViewer and SenzeBand. MindViewer is a visualization tool that lets you understand your mental state while doing an activity such as studying, working, or just taking a break. MindViewer uses the brain signal sensor, Neeuro SenzeBand, to measure brain signals (electroencephalogram or EEG) and gauge mental states attention, relaxation, and mental workload. Other than mental states, the app also compares the relative strength of your brain frequencies - bands, including delta, theta, alpha, beta, gamma. Put on your SenzeBand, use MindViewer to record your mental state, and try with various activities. Observe which activities let you focus better, which activities give you more stress and tension. If there is an activity you want to train and become better in, practice it while using SenzeBand and MindViewer. Over time, observe if your focus has increased in this activity. This shows how ready you are to mentally engage in this activity. Be creative and inquisitive, get to know your mind better with SenzeBand and MindViewer. Disclaimer: Neeuro products are not medical solutions and should not be used to diagnose or treat any medical condition.

Screenshots

Opti Calm4 screens
MindViewer4 screens

Verdict

The call

The clearest difference is monetization model: MindViewer at free against Opti Calm's subscription. Opti Calm's advantage is update cadence (every 2 months vs every 4 months) and iOS requirement (9.0 vs 15.0). 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.

UpkeepUpdate frequency

Opti Calm ships an update every 2 months, MindViewer every 4 months. The most recent releases landed on September 10, 2026 and September 18, 2026 respectively.

Scorecard3 real differences · 7 level
Opti Calm versus MindViewer: the parameters behind the verdict, then further details
ParameterOpti CalmMindViewer
PriceFreeFree
Rating3.0 (2 ratings) — better—
Positive reviews—0.0% of reviews
Number of ratings2 — better—
Update frequencyEvery 2 months — betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
MonetizationSubscriptionFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.0 — better15.0
Further details — not scored
Size280 MB126 MB
Age rating4+4+
DeveloperOptiherenceNeeuro Pte Ltd

Customer experience

Opti Calm

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%

MindViewer

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Opti Calm

No in-app purchases

None

MindViewer

No in-app purchases

Questions

Is Opti Calm free?
Opti Calm is free to download, with no in-app purchases.
Is MindViewer free?
MindViewer is free to download, with no in-app purchases.
Do Opti Calm or MindViewer have ads?
Neither Opti Calm nor MindViewer shows ads.
Which is updated more often, Opti Calm or MindViewer?
Opti Calm ships an update every 2 months, and MindViewer every 4 months. Most recently, Opti Calm was updated on September 10, 2026 and MindViewer on September 18, 2026.

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