Comparison

EMDR Tappers vs HydroCrew

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

Head to head
About

EMDR Tappers

This app provides bilateral stimulation therapy to help manage stress and anxiety. It replicates EMDR therapy using on-screen animations, vibrations, and sounds, accessible with just a phone or smartwatch. Users can customize stimuli and access positive affirmations for mental well-being.

Highlights
  • Bilateral stimulation replication
  • Customizable animations, vibrations, and sounds
  • Positive affirmations integration
  • Use with iPhone and Apple Watch
  • Single or dual phone operation
  • Preset and custom settings (premium)
Features
Read full description

The EMDR Tappers app was designed by researchers, veterans, and licensed eye movement desensitization and reprocessing (EMDR) professionals to replicate EMDR therapy with only an iPhone and Apple Watch. Users can set the pace of animations, vibrations, and sounds. These stimuli are synchronized to replicate the benefits of EMDR therapy in any setting without the expensive, bulky equipment. Users can also use the app with just a single phone or two phones. All of this for free. No external, annoying ads. The core of EMDR therapy is bilateral stimulation—alternatively stimulating each side of the brain with sounds, lights, and vibrations. EMDR is a scientifically proven method of dealing with stress, anxiety, and other negative psychological conditions. The EMDR Tappers app combines the benefits of bilateral stimulation with positive affirmations. These affirmations are delivered bilaterally to help re-program your brain with healthy thoughts and beliefs. EMDR is a “strongly recommended” technique by the leading veterans' organizations, and the American Psychiatric Association has noted that EMDR is effective for treating PTSD symptoms. The premium version of the app allows users to set the color of the animation, choose the sound, and save custom settings as well as access preset settings. Download the app today to experience the power of bilateral stimulation. Terms of service: https://www.inspirehopecounseling.com/emdr-tappers-terms-of-service

About

HydroCrew

Features
Read full description

HydroCrew makes staying hydrated competitive. Join a crew, log your daily water intake, and race your friends to hit your goals. • Track daily water intake in ounces • Compete on a real-time leaderboard with your crew • Invite friends by email or share your crew code • Set your own daily hydration goal • Pull to refresh and stay on top of the competition Created for friend groups, sports teams, offices, and anyone who needs a little friendly competition to drink more water.

Screenshots

EMDR Tappers4 screens
HydroCrew4 screens

Verdict

The call

The clearest difference is in-app purchases: HydroCrew at none against EMDR Tappers's 3. HydroCrew also leads on update cadence (daily vs weekly). EMDR Tappers's advantage is iOS requirement (13.2 vs 15.1). On price, ads 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. EMDR Tappers sells 3 in-app purchases, starting at $6.99 per month. HydroCrew asks for nothing beyond the download.

UpkeepUpdate frequency

EMDR Tappers ships an update weekly, HydroCrew daily. The most recent releases landed on October 17, 2026 and October 5, 2026 respectively.

Scorecard3 real differences · 7 level
EMDR Tappers versus HydroCrew: the parameters behind the verdict, then further details
ParameterEMDR TappersHydroCrew
PriceFreeFree
Rating4.8 (1.6K ratings) — better—
Positive reviews50.7% of reviews—
Number of ratings1.6K — better—
Update frequencyWeeklyDaily — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPod, Apple WatchiPhone, iPad, iPod
Requires iOS13.2 — better15.1
Further details — not scored
Size229 MB15 MB
Age rating12+4+
DeveloperBilateral MindNicholas Prill

In-app purchases

3 purchases

EMDR Tappers

Subscriptions2
  • Guided Bilateral Stimulation3 Days trial$6.991 Month
  • Guided Bilateral Stimulation14 Days trial$49.991 Year
One-time1
  • Premium Bilateral Stimulation$9.99
None

HydroCrew

No in-app purchases

Questions

Is EMDR Tappers free?
EMDR Tappers is free to download, with in-app purchases available.
Is HydroCrew free?
HydroCrew is free to download, with no in-app purchases.
Do EMDR Tappers or HydroCrew have ads?
Neither EMDR Tappers nor HydroCrew shows ads.
Which is updated more often, EMDR Tappers or HydroCrew?
EMDR Tappers ships an update weekly, and HydroCrew daily. Most recently, EMDR Tappers was updated on October 17, 2026 and HydroCrew on October 5, 2026.

Other comparisons