Cue vs Vitals Sync
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Cue
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Cue is a quiet, passive grounding companion for your wrist and ears. When your Apple Watch notices a spike in heart rate or a drop in heart rate variability — the kind your body throws when anxiety is starting to climb — Cue plays a brief grounding cue through your AirPods. No buttons. No journaling. No streaks. Just a 30-second sensory reset, the moment your nervous system asks for one. Most mindfulness apps wait for you to remember. Cue notices first. WHAT IT DOES • Reads heart rate, heart rate variability, and respiratory rate from Apple Watch (HealthKit, on-device only) • Learns your resting baseline over the first week • Triggers when your physiology drifts above your own normal — not a generic threshold • Plays one of six grounding cues through AirPods, drawn from established techniques: sensory anchoring, breath pacing, somatic noting, body presence, cognitive reset, and self-compassion • Falls back to a silent haptic + glanceable card if you don't have headphones in PASSIVE BY DESIGN You shouldn't have to know you're spiralling for the app to help. Cue runs in the background and only speaks when your body says you're activated. Maximum one cue every thirty minutes, five per day — never alarming, never demanding. SCRIPTED BY A PRACTITIONER Cue is built by an experienced meditator and mindfulness practitioner. Each cue is fifteen to forty-five seconds long with contemplative pacing, drawing on evidence-informed grounding methods: 5-4-3-2-1 sensory anchoring, physiological sigh breathing, somatic noting (Polyvagal-informed), Somatic Experiencing orienting, cognitive-attentional reset, and Neff-style self-compassion. ON-DEVICE, FULL STOP Heart rate, HRV, and respiratory data never leave your iPhone or Apple Watch. There's no account. No sync. No cloud analytics. No third-party SDKs. Even the cue audio is bundled with the app — Cue works on aeroplane mode. SUBSCRIPTION $4.99/month or $34.99/year. The 7-day free trial is also your baseline calibration — Cue won't trigger anything until it has learned your normal. A MINDFULNESS COMPANION, NOT A MEDICAL DEVICE Cue is a wellness tool. It does not diagnose, treat, or replace mental health care. If you're in crisis, please call your local crisis line. US: 988 · UK: 111 · AU: 13 11 14 · global: findahelpline.com Terms of Use (EULA): https://qngo9871-cmyk.github.io/cue-legal/terms.html Privacy Policy: https://qngo9871-cmyk.github.io/cue-legal/privacy.html
Vitals Sync
This app imports key health metrics from your Garmin device that are not automatically synced to your phone's health app. It securely transfers HRV, Respiration, SpO₂, and VO₂ Max data directly from your device.
- Syncs HRV, Respiration, SpO₂, and VO₂ Max
- Automatic background sync
- No duplicate entries
- Secure token-based authentication
- On-device processing
- No app account or tracking
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Vitals Sync imports four metrics your Garmin records but does not send to the Health app: HRV, Respiration, SpO₂, and VO₂ Max. Everything runs on your device. You sign in with your Garmin Connect account. The app reads the data your Garmin watch already recorded and writes it to the Health app on your iPhone. Most syncing tools cover only HRV. Vitals Sync does all four. WHAT YOU NEED • A Garmin Connect account • A Garmin watch that records these metrics, like the Forerunner, Fenix, Venu, vívoactive, Instinct, Epix, or Enduro series, and more WHAT IT SYNCS • Heart Rate Variability (HRV) • Respiration rate • Blood oxygen (SpO₂) • VO₂ Max FEATURES • Automatic background sync • No duplicates. Every reading is written once. • Your password is not stored. Only secure tokens, kept in the iOS Keychain on your device. • No account for this app, no tracking, no analytics, no servers PRIVACY Vitals Sync has no backend. It talks directly from your iPhone to your own Garmin account and to the Health app. We never see, collect, or store your data. Vitals Sync is an independent product and is not affiliated with, endorsed by, or sponsored by Garmin Ltd. or its subsidiaries, or by Apple Inc. Garmin® is a registered trademark of Garmin Ltd.
Screenshots
Verdict
The clearest difference is in-app purchases: Vitals Sync at none against Cue's 2. Vitals Sync also leads on update cadence (fortnightly vs monthly). On price, ads, device support 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
Both are free to download. Cue sells 2 in-app purchases, starting at $4.99 per month. Vitals Sync asks for nothing beyond the download.
Cue ships an update monthly, Vitals Sync fortnightly. Both last shipped on October 31, 2026.
| Parameter | Cue | Vitals Sync |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.3 (6 ratings) — better |
| Positive reviews | — | 50.0% of reviews |
| Number of ratings | — | 6 — better |
| Update frequency | Monthly | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone, Apple Watch — better | iPhone |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 13 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Quyen Ngo | UMUR GOKALP |
In-app purchases
Cue
- Cue Monthly14 Days trial$4.991 Month
- Cue Annual14 Days trial$34.991 Year
Vitals Sync
No in-app purchases









