HRV Train vs PocketSync
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HRV Train
This app uses heart rate variability biofeedback to help you reduce stress and increase resilience. It displays real-time heart rate data to help you learn to manage relaxation and activation levels. Your data is kept private on your device.
- Heart rate variability biofeedback
- Real-time heart rate display
- Stress level indicator
- Learn relaxation techniques
- Data privacy
- Bluetooth LE heart rate monitor compatible
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HRV Train is a simple and effective heart rate variability biofeedback app that you can use to to reduce stress and increase resilience. HRV Train also keeps your data private. The app does not send any of your data off the iOS device unless you specifically email it to someone. HRV Train is similar to HRV Trace, but it lacks any audio or video recording capacity within the app. HRV Train was created at the request of people who did not need the recording capability. THERE IS NO UPGRADE PATH FROM HRV TRAIN TO HRV TRACE as the database structures for these apps are completely different. If you know you want to use audio/video recording with your heart rate trace displayed on the video, then you should get HRV Trace. HRV Train displays your beat-to-beat heart rate and activity level in real-time on the screen. The shape of the heart rate graph can give you immediate information about your stress level. Certain shapes are associated with higher states of stress and certain shapes are related to lower states. By using HRV Train to see your heart rate in real-time you can learn how to modulate your level of relaxation or activation to best suit the needs of the situation. You can learn to slow down when it's appropriate to rest and you can learn to shift into a ready state when you need to be calm under pressure. HRV Train is meant to assist with stress-management and resilience and is not to be used to treat any medical condition. HRV Train requires a separate heart rate monitor that will transmit heart rate data via BlueTooth LE to your iOS device. The app has been tested with the following monitors: the Polar H7 and H10, the Cardiosport TP3, TP5 and TP5+, and the Zephyr HxM Smart,
PocketSync
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PocketSync connects your health data and cloud services in one powerful app. Sync Apple Health metrics to the tools you already use, and keep your files, contacts, and calendars in perfect harmony across every cloud provider. APPLE HEALTH SYNC Send your health data exactly where you need it -- automatically, reliably, and in real time. PocketSync reads from Apple Health and delivers your metrics to any combination of these destinations: - Home Assistant: Push health sensors directly into your smart home dashboard - Google Sheets: Build personal health spreadsheets that update themselves - InfluxDB & Grafana Cloud: Create rich time-series dashboards for deep analysis - Splunk: Feed health telemetry into your observability stack - n8n: Trigger automations based on health events - CSV Export: Download clean data files for research or personal records - Custom Webhooks: Send JSON payloads to any HTTP endpoint you control Supported health categories include steps, heart rate, blood pressure, blood glucose, sleep analysis, body measurements, respiratory rate, blood oxygen, workout sessions, and more. Every delivery is tracked. Failed syncs retry automatically in the background. You always know what was sent, when it arrived, and whether it succeeded. CLOUD FILE SYNC Keep your cloud storage providers in sync without manual transfers. - Google Drive, OneDrive, Dropbox, Box, and pCloud - One-way or bidirectional sync between any two providers - Choose specific folders to sync or mirror entire directory structures - Real-time progress tracking with push notifications on completion - Conflict detection and resolution for bidirectional sync jobs CONTACT SYNC Unify your address books across platforms. - Google Contacts, Microsoft/Outlook Contacts, and CardDAV providers - Full CardDAV support for Fastmail, Nextcloud, iCloud, and any standard CardDAV server - Review queue for new contacts before they sync to prevent duplicates - One-way or bidirectional sync with field-level mapping CALENDAR SYNC Keep every calendar aligned without double-booking. - Google Calendar, Outlook/Microsoft Calendar, and CalDAV providers - CalDAV support for Fastmail, Nextcloud, and any standard CalDAV server - One-way mirroring or full bidirectional sync - Event details, attendees, and recurrence rules preserved CROSS-DEVICE SYNC & BACKUP Sign in with Apple to sync your configuration across iPhone and iPad. Your integration settings back up automatically as you change them, so you can restore them on another device in seconds. AI HEALTH INSIGHTS Get intelligent summaries and trend analysis powered by AI. Spot patterns in your health data that you might otherwise miss. BUILT FOR PRIVACY PocketSync processes your health data on your device. Credentials for third-party services are stored securely in the iOS Keychain. We never sell your data, and we never will. Read our full privacy policy at weavehub.app/pocketsync/privacy. FLEXIBLE SUBSCRIPTIONS The app is free to download and explore, and you can preview what a migration would move before paying anything. PocketSync Pro unlocks every integration -- all health destinations, cloud file sync, contact sync, and calendar sync -- and keeps them syncing continuously. If you only need to move your data once, the Migration Pass is a single one-time purchase instead of a subscription. TECHNICAL DETAILS - Background sync with intelligent scheduling - Delivery tracking with automatic retry and failure alerts - Supports iPhone and iPad running iOS 17 or later - Built by WeaveHub Technologies LLC Download PocketSync and take control of your health data and cloud services today. Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: PocketSync at Free against HRV Train's $4.99. PocketSync also leads on update cadence (every 5 days vs every 27 months). HRV Train's advantage is in-app purchases (none vs 3) and iOS requirement (12.0 vs 17.0). On 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
PocketSync is free to download; HRV Train costs $4.99 up front. PocketSync sells 3 in-app purchases, starting at $2.99 per month. HRV Train asks for nothing beyond the download.
HRV Train ships an update every 27 months, PocketSync every 5 days. The most recent releases landed on September 21, 2026 and October 7, 2026 respectively.
| Parameter | HRV Train | PocketSync |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 2.3 (3 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 27 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 40 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | Ibernetics, LLC | WeaveHub Technologies LLC |
In-app purchases
HRV Train
No in-app purchases
PocketSync
- PocketSync Pro (Monthly)7 Days trial$2.991 Month
- PocketSync Pro (Annual)7 Days trial$24.991 Year
- Migration Pass$8.99









