Lifetime access
€99
No recurring bill. Premium access to both apps for personal use.
Early Adopter Lifetime · 10 Slots Available
- €99Early Adopter Lifetime (10 slots available)
Single transparent tier. Your price is confirmed before payment.
PulseTrace · Android
Take a reading.
Take a reading.
Keep a record.
Explore heart and breathing rate estimates with the sensors already in your Android phone. PulseTrace processes signals on your device and lets you save readings to LastDose.
3-Step Quick Install Guide
1
Download APK
Download the direct signed APK (v7.1.0) to your Android device.
2
Allow Unknown Sources
When prompted by Android, tap Settings → Allow from this source.
3
Open & Measure
Launch PulseTrace. Take a contact PPG reading with on-device DSP.
Direct signed APK download (v7.1.0 · 39.9 MB · Recommended Stable). Cloudflare R2 delivery. Full release archive & hashes. Personal wellness software, not a medical device.
PULSETRACE ON-DEVICE SENSING
Heart rate (PPG)
Breathing rate
Local processing
Illustrative signal · Not a live measurement
01 Contact PPG
02 Optical Respiration
Built around your phone
A closer look at your signals.
- Heart rate. Use fingertip contact with your phone’s camera to estimate your pulse.
- Signal quality. In-house processing checks the signal before presenting an estimate. Position, movement, and device capabilities affect results.
- Breathing rate. Camera and microphone signals support breathing rate estimation, with processing kept on your phone.
Premium / LastDose + PulseTrace Pro
Two apps. One unified plan.
Keep your medication history in LastDose. Take camera-based readings with PulseTrace. Try the current Android releases, then unlock premium in both with one activation code.
Yearly
€49.99 / year
Both apps, billed once a year. Save 40% vs. Monthly.
Renews at €49.99/year until cancelled.
Monthly
€6.99 / month
Premium in both apps with a monthly commitment. Cancel renewal in PayPal whenever you like.
Renews at €6.99/month until cancelled.
1. Try the apps
Direct signed APKs: LastDose 7.1.2 and PulseTrace 7.1.0.
2. Choose your plan
Pay securely through PayPal. Save the activation code shown after payment.
3. Unlock both
Enter the same code in each app’s settings. Up to 5 app activations for personal use.
Billing, activation and refunds
All prices are in EUR. Lifetime is a single payment. Monthly and yearly plans renew automatically until you cancel in your PayPal account; access continues until the paid period ends. 14-day satisfaction refund guarantee: contact [email protected] with your payment reference.
Older app screens may display previous prices. The amount shown here and in PayPal is the amount you agree to pay. Current app builds require manual code entry. After a subscription renewal, use Restore or re-enter the same code to refresh access if needed. An internet connection is required for activation and restoring access.
The plans cover LastDose and PulseTrace premium, not ownership of ARBH Labs. These are early releases for personal tracking and wellness, not medical devices.
PulseTrace
Measure
LastDose
Save the reading
Measure in PulseTrace.
Save the reading in LastDose.
After taking a measurement, tap Send to LastDose. The reading goes into your history alongside your medication logs. You don’t need to use both apps.
Personal tracking and wellness tools. Not for diagnosis or treatment decisions.
Technical details & further reading
Contact photoplethysmography (PPG) for heart rate; front-camera optical flow and acoustic signal processing for breathing rate. Processing happens on-device. Measurement quality depends on lighting, positioning and movement.
Personal wellness and tracking software, not a medical device. Do not use measurements or logs to make diagnosis or treatment decisions.
Release Archive & Verification
PulseTrace Version History
Direct, verified APK downloads stored on Cloudflare R2. Only officially approved builds appear in this archive.
PulseTrace 7.1.0
★ Recommended LatestStable
Released 2 September 2026 · Build 30 · Android 8.0+ (API 26)
What's New
- Semantic system haptics for selection, measurement lock, success, warning, and error states.
- Reduced-motion-safe press and result-reveal feedback across core interactions.
Reliability
- Improved measurement and LastDose-transfer feedback without changing signal estimators.
PulseTrace 7.0.6
Stable
Released 1 September 2026 · Build 28 · Android 8.0+ (API 26)
What's New
- Heart and respiratory progress represents accepted physiological signal time rather than timer duration.
- Contact coverage, clipping, motion, weak pulsatility, and dropout frame rejection.
- ARBH Sensor Console with truthful acquisition scan, accepted-data progress, and accessible updates.
Bug Fixes & Hardening
- AE/AWB locking is convergence-aware and releases cleanly on reacquisition.
- PPG frame snapshots allocate only at estimator cadence.
- Short interruptions pause; sustained loss selectively reacquires invalid window.
Known Notes
- Respiratory audio is optional; camera optical flow remains primary signal.
PulseTrace 7.0.5
Stable
Released 1 September 2026 · Build 27 · Android 8.0+ (API 26)
What's New
- Respiratory measurement requests optional microphone access on first use with honest camera-only fallback.
- Activation and restore update shared entitlement state immediately.
Bug Fixes
- Measurement receipts remain replay-safe after settlement, preventing duplicate free consumption.
- Enforced consistent dark presentation across all screens.
PulseTrace 7.0.4
Stable
Released 1 September 2026 · Build 26 · Android 8.0+ (API 26)
What's New
- Hardened purchase restore with verified entitlement checks.
- Repeatable HR/RR camera measurement and direct LastDose transfer.
PulseTrace 7.0.1
Stable
Released 1 September 2026 · Build 20 · Android 8.0+ (API 26)
What's New
- Weak-signal ensemble rescue path for respiratory rate.
- Evidence-scaled acquisition bar and TalkBack live region guidance.
PulseTrace 7.0.0
Stable
Released 31 August 2026 · Build 19 · Android 8.0+ (API 26)
What's New
- Consensus pulse engine with multi-ROI contact PPG and optical respiration estimation.
- On-device signal analysis with local measurement history.
PulseTrace 0.6.10-alpha
Alpha / Test
Released 27 August 2026 · Build 17 · Android 8.0+ (API 26)
What's New
- Alpha test release for in-house optical flow biosignal sensor validation.