Heart Rate PRO vs NDSR355A
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Heart Rate PRO
Transform your iPhone into a personal heart rate monitor. Track your pulse anytime, anywhere without additional hardware. Ideal for monitoring your physical and mental condition.
- Measure heart rate without extra devices
- Track resting heart rate
- Monitor heart rate before/during/after workouts
- Uses iPhone camera and flashlight
- Simple finger placement method
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Turn your iPhone into genuine heart rate monitor with Heart Rate PRO app! Your heart rate is the best way to determine your physical or mental condition. Heart Rate PRO will show you how fast your heart is beating at any moment, wherever you are. No extra devices needed, no chest strap. Just you and your iPhone or iPad. Measure your heart rate: - when resting - before activities - during workout - after a training session How does it work? It's easier than you think! 1. Place lightly and hold your finger against the back camera lens and flashlight: - do not press too hard, do not use with cold fingers (these may negatively affect your results) - when using a device without a flashlight, be sure to use in a well-lit area (bright daylight) 2. Remain calm and try not to move too much during the measurement. Your Heart Rate result will appear shortly! Download Heart Rate PRO app today, check your heart rate regularly, stay healthy! -- NOTE: Works best with devices equipped with flash. When using the device without flash the app has to be used in good lighting. Place your fingertip on the camera (make sure it completely covers the camera lens & flashlight). Press gently, make sure that your fingers are not cold (these may reduce blood flow in your finger and effects result). WARNING: This is not a medical product. This app is for recreational use only.
NDSR355A
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NDSR355A is a application for Nakamichi Digital Sound Processor
Screenshots
Verdict
The clearest difference is price: NDSR355A at Free against Heart Rate PRO's $2.99. NDSR355A also leads on iOS requirement (9.0 vs 11.3). Heart Rate PRO's advantage is update cadence (every 6 weeks vs every 10 months). On 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
NDSR355A is free to download; Heart Rate PRO costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Heart Rate PRO ships an update every 6 weeks, NDSR355A every 10 months. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.
| Parameter | Heart Rate PRO | NDSR355A |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.2 (758 ratings) — better | — |
| Positive reviews | 10.5% of reviews | — |
| Number of ratings | 758 — better | — |
| Update frequency | Every 6 weeks — better | Every 10 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 11.3 | 9.0 — better |
| Further details — not scored | ||
| Size | 23 MB | 39 MB |
| Age rating | 4+ | 4+ |
| Developer | Aexol Studio | Guangzhou Aidan Blessindo Electronic Co.,Ltd. |
Bugs and requests
Heart Rate PRO
Reported bugs
3 issues- App unable to detect finger
- Measurements not saving
- Crashes during use
Requested features
3 requests- Integration with Apple Health
- Continuous heart rate monitoring mode
- Export data for analysis
NDSR355A
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Heart Rate PRO
No in-app purchases
NDSR355A
No in-app purchases
