Comparison

DS Heart Rate vs OrangeCal

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

DS Heart Rate

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Estimate your pulse with the iPhone camera in about 16 seconds, then follow clear, private heart-rate and BPM trends. DS Heart Rate is a general wellness and fitness tracker. Rest a fingertip over the rear camera and flash; the app analyzes subtle color changes on device and produces an estimated BPM. No account, external sensor, ads, or analytics are required. FREE TO START. LIFETIME PRO. β€’ Your first 5 real measurements are free, followed by 1 free measurement every day β€’ A one-time Lifetime Pro purchase unlocks unlimited measurements, month/year trends, Apple Health writing, daily reminders, and supported on-device insights β€’ No subscription or ads; all saved readings and CSV export always remain available FAST CAMERA ESTIMATES β€’ Live signal-quality guidance helps you cover the camera and flash correctly β€’ A stable estimate appears after about 16 seconds of usable signal β€’ Add context such as resting, before exercise, after exercise, stress, or bedtime UNDERSTAND PERSONAL TRENDS β€’ Today overview, latest reading, 7-day average, and measurement streak β€’ Weekly trends are free; Lifetime Pro adds month and year charts β€’ Add notes, view every saved reading, and export CSV at any time PRIVATE BY DESIGN β€’ Camera frames are processed only in memory; no photos or video are saved β€’ Readings stay on device and are excluded from this app's iCloud backup β€’ No account, advertising, analytics, or developer-operated server β€’ Apple Health is optional: the app writes only estimates you choose to save and does not read existing Health data β€’ Supported on-device insights use Apple's private model without sending readings to a developer server METHOD AND LIMITATIONS DS Heart Rate uses camera photoplethysmography (PPG) to estimate pulse timing and checks finger coverage and signal quality. Motion, cold fingers, pressure, skin perfusion, ambient light, flash heat, and camera hardware can affect results. IMPORTANT DS Heart Rate is not a medical device and has not been clinically validated against a regulated medical device. Results are for general wellness trends only. Do not use the app for diagnosis, treatment, emergencies, or to delay care. Consult a qualified healthcare professional if you have concerning symptoms or persistently unusual readings.

About

OrangeCal

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OrangeCal is a professional calorie recognition and recording app designed for people who are looking to reduce inflammation, lose weight, burn fat, and build muscle, as well as for fitness enthusiasts and trainers. It utilizes artificial intelligence technology to create a personalized AI health companion that can help record diet, query calories, and answer daily health questions. key features include: 1. Accurate identification of calories and inflammatory responses through photo capture Simply take a photo to accurately recognize the calories, carbohydrates, proteins, fats, and other nutritional components and inflammatory index of the food in the picture, eliminating the need for manual entry and search. 2. Automatic recording of daily calorie consumption Take a photo and the app will automatically record the food name, calories, and other nutritional components, with zero input required for the entire process. 3. Personalized calorie goals The app automatically calculates the calorie intake that fits your personal health goals at different stages, including values for carbohydrates, fats, and overall calorie intake, safeguarding your health. NOTE: We do not offer medical advice. Any and all recommendations should be viewed as suggestions, please consult with a professional and do your own research before trying a new calorie and nutrient plan. *ANALYSIS RESULTS REQUIRE A SUBSCRIPTION. 99% of LifeFit users report significant health improvements after using for one week. Subscribe to get: 1. Take photos to calculate calories and detect inflammation. 2. Analyze nutritional components, with alerts for excess. 3. Convenient operation, good mood leads to faster fat reduction. 4. Capable of recognizing both text and photos, accompanying you for a healthy life. TERMS: https://xingzhike.github.io/2024/12/24/termOfUse/

Screenshots

DS Heart Rate4 screens
OrangeCal4 screens

Verdict

The call

DS Heart Rate and OrangeCal are too close to call on the numbers: across 5 compared parameters β€” price, ads, in-app purchases and device support among them β€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. DS Heart Rate sells 1 one-off in-app purchase and OrangeCal sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
DS Heart Rate versus OrangeCal: the parameters behind the verdict, then further details
ParameterDS Heart RateOrangeCal
PriceFreeFree
Update frequencyEvery 85 monthsβ€”
AdsNoNo
In-app purchasesYesYes
DevicesiPhoneiPhone
Requires iOS16.0 β€” better17.5
Further details β€” not scored
Size3 MB6 MB
Age rating4+4+
Developer思θΏͺ 李Beijing Light & Realm Technology Co., Ltd.

In-app purchases

1 purchases

DS Heart Rate

One-time1
  • Lifetime Pro$1.99
2 purchases

OrangeCal

Subscriptions2
  • Monthly membership$9.991 Month
  • Annual membership$49.991 Year

Questions

Is DS Heart Rate free?
DS Heart Rate is free to download, with in-app purchases available.
Is OrangeCal free?
OrangeCal is free to download, with in-app purchases available.
Do DS Heart Rate or OrangeCal have ads?
Neither DS Heart Rate nor OrangeCal shows ads.

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