Comparison

Bi vs EMDR

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

Head to head
About

Bi

This app utilizes patented bilateral tapping technology to help calm the nervous system and reduce stress and anxiety. It aims to increase feelings of safety and calm, improve focus, and enhance sleep quality. The app can be used independently or alongside other relaxation methods.

Highlights
  • Bilateral tapping technology
  • Anxiety and stress reduction
  • Improved focus and sleep
  • Adjustable speed, intensity, and duration
  • Information tab for usage guidance
Features
Read full description

Bi-Tapp® is patented anxiety relief technology that accesses our natural ability to calm our nervous system down. Bilateral tapping is one of the easiest ways to assist us in returning to our optimal level of functioning in a short amount of time. As a result of Bi-Tapp® you may experience an increase in: • Sense of safety and calm • Focus and attention • Quality Sleep As a result of Bi-Tapp®, you may experience a decrease in: • Stress and anxiety • Emotional distress • Burnout and fatigue Bi-Tapp can be used as a stand alone product, or can be combined with other relaxing techniques such as, focused breathing techniques or listening to calming music. Bi-Tapp can be used throughout the day to help regulate stress and anxiety or used, as needed. This App contains an information tab to provide additional information on how to use this product. Note: Bi-Tapp is not meant to replace mental health therapy or medical treatment. Individual results may vary. BI-TAPP UNITS REQUIRED: Bi-Tapp requires the purchase of the Bi-Tapp kit. The tappers connect to your mobile device. Once you pair the tappers to the app, use the app to adjust the rate of speed, the intensity level and the length of time you want to use this product. A bilateral tapping sensation in an alternating, rhythmic pattern takes place between the two tappers.

About

EMDR

This app provides customizable bilateral stimulation across Apple devices, offering control over visual, auditory, and haptic feedback. It supports various use cases like research, education, focus enhancement, and relaxation, with accessibility features and online broadcasting capabilities.

Highlights
  • Customizable pace and auto-stop
  • Stereo sounds, animations, and vibrations
  • Cross-device connectivity (iPhone, iPad, Mac, etc.)
  • Game controller support
  • Online broadcasting via EMDR Connect
  • Full VoiceOver and Assistive Access support
Features
Read full description

The EMDR app puts you in full control of visual, audio, and haptic bilateral stimulation. Turn game controllers and Joy-Cons into tappers, position sound precisely in stereo, and fine-tune vibration intensity. Sync across your Apple devices or broadcast to any browser with EMDR Connect. Full VoiceOver and Assistive Access support is built in. STIMULATION YOUR WAY Tailor every session to your needs: • Set your pace with presets or fine-tune it with a slider. • Use auto-stop so you never have to count along. • Choose from a wide range of sounds, animations, and vibrations. • Hear the count spoken aloud in 21 languages. • Position stereo sound to the left, right, or center. • Fine-tune vibration intensity, automatically adapted to each device. • Personalize colors, patterns, and more. WORKS ACROSS YOUR DEVICES Connect iPhone, iPad, Mac, Apple TV, Apple Watch, Apple Vision Pro, Joy-Cons, and game controllers. Alternate flashes or vibrations between devices, or use one as a remote control for another. No specialized tapper hardware is needed. The devices you already own do the work. BROADCAST WITH EMDR CONNECT Send your stimulation to a protected webpage on any computer, tablet, or phone, whether it's your own device or someone else's. PRIVATE BY DESIGN No account is needed. Shared names are encrypted, and EMDR Connect session data is removed from the server when the session ends. START FROM ANYWHERE • Start stimulation from Control Center, the Lock Screen, or the Action button. • Ask Siri, or automate your setup with Shortcuts. • Control playback from your headphones or a widget, even in the background. BUILT FOR ACCESSIBILITY Full support for Assistive Access and VoiceOver makes the app usable for people with diverse needs, with specialized interfaces that don't compromise on capability. TRY ONE MONTH FREE Explore everything the EMDR app offers with a free one-month trial for new subscribers. EMDR+ unlocks the full feature set across your Apple devices. EMDR Connect adds broadcasting to any browser. Download today and see how it fits your routine. APP PURPOSE This app is a general-purpose tool for generating bilateral and other types of stimulation. It supports a wide range of applications, including: • Research, e.g. testing the effects of bilateral stimulation. • Education, e.g. illustrating bilateral stimulation principles. • Focus and attention, e.g. pacing tasks with timed signals. • Relaxation and wellness, e.g. promoting physical relaxation through bilateral vibration. This app is not intended to diagnose, treat, cure, or prevent any disease or condition. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Bi3 screens
EMDR4 screens

Verdict

The call

The clearest difference is in-app purchases: Bi at none against EMDR's 7. Bi also leads on review sentiment (62% vs 46%). EMDR's advantage is update cadence (weekly vs every 2 months) and ratings volume (172 vs 28). On price, rating, ads and iOS requirement 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. EMDR sells 6 in-app purchases, starting at $4.99 per month. Bi asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.3 for Bi against 4.4 for EMDR. That said, the two scores are not equally well evidenced: EMDR has 172 ratings behind it against 28, so its average is the more settled of the two. Written reviews are what separate them: 62% of Bi's written reviews are positive against 46% of EMDR's.

UpkeepUpdate frequency

Bi ships an update every 2 months, EMDR weekly. The most recent releases landed on October 9, 2026 and October 20, 2026 respectively.

Scorecard6 real differences · 4 level
Bi versus EMDR: the parameters behind the verdict, then further details
ParameterBiEMDR
PriceFreeFree
Rating4.3 (28 ratings)4.4 (172 ratings) — better
Positive reviews61.5% of reviews — better45.8% of reviews
Number of ratings28172 — better
Update frequencyEvery 2 monthsWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac, Apple TV, Apple Watch, Vision Pro — better
Requires iOS14.0 — better15
Further details — not scored
Size34 MB113 MB
Age rating4+4+
DeveloperBi-Tapp IncBas Oppenheim

Customer experience

Bi

All ratings28 ratings
Positive82.1%
Neutral7.1%
Negative10.7%
Written reviews13 reviews
Positive61.5%
Neutral15.4%
Negative23.1%

EMDR

All ratings172 ratings
Positive84.9%
Neutral3.5%
Negative11.6%
Written reviews48 reviews
Positive45.8%
Neutral4.2%
Negative50.0%

Bugs and requests

Bi

Not enough reviews yet to summarise bugs or requests.

EMDR

Reported bugs

10 issues
  • Apple Watch app won't launch after update
  • Sound issues (thudding noise, stereo problems)
  • Apple TV app doesn't work
  • Session disrupted by upsell window
  • App crashes when selecting features
Show 5 more
  • Sound doesn't work after purchasing
  • App doesn't work without internet
  • Trial starts without warning
  • Trial period doesn't work
  • App doesn't play in background or when screen is locked

Requested features

13 requests
  • Gradient effect for circle
  • More customization for circle
  • Alternating controller vibration
  • Timer feature
  • Slower BPM options (down to 30)
Show 8 more
  • More frame rates per second
  • Additional movements (Achten, Kreise)
  • Slower option for Slow EMDR
  • Use two Nintendo controllers for each hand
  • Pitch control for tone option
  • Option for 48 repeats
  • Ability to run with screen locked or in background
  • Manual input for repetitions and speed

In-app purchases

None

Bi

No in-app purchases

6 purchases

EMDR

Subscriptions5
  • EMDR+1 Month trial$4.991 Month
  • EMDR+ with Connect1 Month trial$19.991 Month
  • EMDR+ with Connect (Monthly)1 Month trial$39.991 Month
Show 2 more
  • EMDR+ (Yearly)1 Month trial$49.991 Year
  • EMDR+ with Connect (Yearly)1 Month trial2 variants$199.991 Year
One-time1
  • EMDR+ for Research$9.99

Questions

Is Bi free?
Bi is free to download, with no in-app purchases.
Is EMDR free?
EMDR is free to download, with in-app purchases available.
Which has better reviews, Bi or EMDR?
EMDR is rated higher. Bi averages 4.3 out of 5 from 28 ratings, while EMDR averages 4.4 from 172 ratings.
Do Bi or EMDR have ads?
Neither Bi nor EMDR shows ads.
Which is updated more often, Bi or EMDR?
Bi ships an update every 2 months, and EMDR weekly. Most recently, Bi was updated on October 9, 2026 and EMDR on October 20, 2026.

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