EMDR vs Four Shields
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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/
Four Shields
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Four Shields is a private space for reflection, awareness, and personal balance. Inspired by the Four Shields of Life framework, the app helps you explore four interconnected dimensions: • Body — grounding, energy, movement, and physical awareness • Mind — clarity, focus, patterns, and perspective • Heart — emotions, relationships, connection, and compassion • Spirit — meaning, purpose, intuition, and belonging FEATURES • Guided Four Shields check-ins • Private journaling and reflection • Practices for each shield • Threshold Solo Walks • Council and mirroring exercises • Optional voice recording and transcription • Optional AI-assisted reflection • Progress and practice history • English and German support PRIVACY BY DESIGN Your journal entries, check-ins, recordings, and reflections are stored locally on your device. Content is only transmitted when you deliberately use an optional transcription or AI mirroring feature. Four Shields has no advertising and does not use your reflections for tracking or marketing. PREMIUM A Four Shields Premium subscription unlocks the complete collection of guided practices and advanced reflection features. Monthly and annual options are available through Apple’s in-app purchase system. Four Shields is intended for educational reflection and personal development. It does not provide medical, psychological, therapeutic, or crisis-care services. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: Four Shields at every 3 days against EMDR's weekly. EMDR's advantage is device support (7 vs 3) and iOS requirement (15 vs 17.0). On price, ads and in-app purchases 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. EMDR sells 6 in-app purchases, starting at $4.99 per month and Four Shields sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.
EMDR ships an update weekly, Four Shields every 3 days. The most recent releases landed on October 16, 2026 and October 10, 2026 respectively.
| Parameter | EMDR | Four Shields |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (172 ratings) — better | — |
| Positive reviews | 45.8% of reviews | — |
| Number of ratings | 172 — better | — |
| Update frequency | Weekly | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod, Mac, Apple TV, Apple Watch, Vision Pro — better | iPhone, iPad, Apple Watch |
| Requires iOS | 15 — better | 17.0 |
| Further details — not scored | ||
| Size | 113 MB | 90 MB |
| Age rating | 4+ | 4+ |
| Developer | Bas Oppenheim | Blain Bertrand |
Bugs and 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
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- 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)
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- 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
Four Shields
Not enough reviews yet to summarise bugs or requests.
In-app purchases
EMDR
- 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
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- EMDR+ (Yearly)1 Month trial$49.991 Year
- EMDR+ with Connect (Yearly)1 Month trial2 variants$199.991 Year
- EMDR+ for Research$9.99
Four Shields
- Four Shields Premium Monthly$5.991 Month
- Four Shields Premium Annual$44.991 Year









