Heart Alert vs Simpervals
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Heart Alert
Receive immediate audio notifications when your heart rate exceeds or falls below personalized thresholds. Ideal for fitness training, recovery tracking, or general health awareness. It supports a wide range of Bluetooth heart rate monitors.
- Customizable BPM range
- Instant audio alerts
- Background operation
- Quick setup
- Bluetooth heart rate monitor support
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Heart Alert connects to your Bluetooth heart rate chest strap, armband or watch and plays a sound the moment your BPM goes above or below the range you set. Choose a minimum and a maximum, put your phone away, and train by ear. No screen-watching. No zone math. No account. HOW IT WORKS 1. Put on your chest strap or armband, or turn on heart rate broadcast on your watch. 2. Set your min and max BPM. 3. Press start — you get an alert when you drift too high or too low, and another one when you are back in range. FEATURES – Custom minimum and maximum BPM limits – High heart rate alerts and low heart rate alerts – Immediate audio alerts, with adjustable volume – Optional vibration – Repeat interval of 1, 3, 5 or 10 seconds while you are out of range – "Out of range for" delay, so a short spike or a passing dip stays quiet – Initial delay, to keep things silent during your warm-up – Sensor battery level at a glance – Runs in the background and with the screen locked – Available in 24 languages, spoken alerts included – Fast setup, nothing to sign up for WORKS WITH YOUR CHEST STRAP Heart Alert is built for Bluetooth Low Energy (BLE) heart rate chest straps, including: – Polar H10, Polar H9, Polar H7 – Garmin HRM 600, HRM 200, HRM-Pro Plus, HRM-Pro, HRM-Fit, HRM-Dual – Wahoo TRACKR Heart Rate, TICKR, TICKR X – CooSpo H6, H808S, H9Z – Magene H64, H303 – Suunto Smart Heart Rate Belt – Decathlon Kiprun / Kalenji Dual HRM belt – iGPSPORT HR40, Moofit, XOSS, Bryton, Sigma and other generic BLE chest straps ARMBANDS AND WATCHES TOO – Armbands: Polar Verity Sense, Polar OH1, Scosche Rhythm, Wahoo TICKR FIT, CooSpo HW807 – Watches that broadcast heart rate over Bluetooth: Garmin (Broadcast Heart Rate), Polar (share HR with other devices), Coros, Suunto, Amazfit, Huawei, Xiaomi Smart Band, Whoop Turn on heart rate broadcast on your watch before you scan. Apple Watch and Fitbit do not broadcast heart rate over Bluetooth, so they cannot connect. Any device that sends a standard Bluetooth LE heart rate signal should work, though Bluetooth on its own does not guarantee compatibility, and ANT+-only sensors will not connect. If yours is not detected, send the developer a message. An external heart rate sensor is required. Camera-based measurement is not supported. MADE FOR – Zone 2 work and aerobic base building – Running, cycling and indoor cycling – Cardio, gym sessions and interval training – Endurance and steady-state efforts – Easy recovery days, where the whole point is keeping the effort down – Anyone who wants a heart rate alarm and nothing else WHY AN ALARM INSTEAD OF A DISPLAY? A number on a screen only helps if you look at it. An alert means your target range takes care of itself, and you only think about it when something actually needs attention — on the treadmill, on the road, or with your phone in a jersey pocket. PRICING Your first 5 tracking sessions are free. Unlimited tracking is a one-time purchase. No subscription, no ads. PRIVACY Heart Alert collects no data. Your heart rate never leaves your phone. BACKGROUND USE Heart Alert keeps tracking in the background and with the screen locked. Don't close it from the app switcher while you train: iOS stops the app, and the alerts with it. Heart Alert is a fitness and training tool. It is not a medical device, it is not intended to diagnose, treat, cure or prevent any disease, and it should not be relied on for emergency or continuous health monitoring. Check with a doctor if you have questions about your heart rate or your training.
Simpervals
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Simpervals is a clean, simple interval timer built for people who just want to get moving. Set your action time, break time, and number of sets, hit start, and let the app handle the rest. Whether you are doing run-walk intervals, gym circuits, rehab work, home workouts, or couch to 5K training, Simpervals keeps things clear and easy. No clutter. No sign-up. No nonsense. Why Simpervals Free to use No ads No data collection No account required No internet required Lightweight and easy to use Features Simple action and break intervals Set your number of rounds Clear, readable countdown timer Clean design that is easy on the eyes Built for quick setup and fast use Great for running, walking, circuits, and general fitness Works offline Simpervals was made for people who do not want a bloated fitness app. You do not need social features, graphs, logins, subscriptions, or distractions just to time intervals. You just need a timer that works.
Screenshots
Verdict
The clearest difference is update cadence: Simpervals at every 3 days against Heart Alert's every 2 months. Heart Alert's advantage is iOS requirement (16.6 vs 18.6). On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Heart Alert ships an update every 2 months, Simpervals every 3 days. The most recent releases landed on October 16, 2026 and October 2, 2026 respectively.
| Parameter | Heart Alert | Simpervals |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (36 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 36 — better | — |
| Update frequency | Every 2 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.6 — better | 18.6 |
| Further details — not scored | ||
| Size | 21 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Nikita Verkhovin | Josh Cooling |
In-app purchases
Heart Alert
No in-app purchases
Simpervals
No in-app purchases
Questions
Is Heart Alert free?
Is Simpervals free?
Do Heart Alert or Simpervals have ads?
Which is updated more often, Heart Alert or Simpervals?
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