# Ember by Cercacor > Non-invasive multi-parameter health tracker for training optimization and body insights. (iPhone/iPad app by Willow Laboratories, Inc..) - Source: https://appshunter.io/ios/app/ember-by-cercacor/id941846110 (this page in markdown: same URL + `.md`) - Developer: [Willow Laboratories, Inc.](https://appshunter.io/developer/941846109) - Category: Health & Fitness, Lifestyle - Price: Free with in-app purchases - Rating: 3.00/5 from 10 App Store ratings · 7 written reviews indexed - Age rating: 4+ - Requires: iOS 9.0 · 37 MB - Languages: American English - Released: 2015-12-17 - Data updated: 2026-06-11 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/ember-by-cercacor/id941846110/reviews.md ## What is Ember by Cercacor? Ember® Non-invasive multi-parameter tracker measures and tracks up to 10 parameters including hemoglobin and pulse-rate variability. This app requires the purchase of an Ember Non-invasive Multi-Parameter Tracking System from cercacor.com/shop/buy-ember. Key Features - Non-invasive technology: No Blood, no Pain. - Quick results: Results in approximately 1 minute. - See Trends: Quickly see how your values are trending. - Track Results by Activity: Compare your first-of-day with your end-of-day values. How can Ember help? - Optimize Elevation Training: Ember helps you understand how your body adapts to higher altitudes. Ember also provides insight into how long to train at elevation to maximize gains prior to a competition. - Know your Body Better: Ember tracks and measures hemoglobin, oxygen content, pulse rate variability and seven other blood constituents so you can see how your body responds to different training methods. You'll get better insights on a day-to-day basis. - Detect Signs of Potential Overtraining: By measuring oxygen content, pulse rate and pulse rate variability across a range os activities and conditions, Ember can help you know when you may need to ease up. See why our ambassadors and other professionals use Ember "Over the course of my career, I've learned that being in tune with my body is absolutely essential for improving performance. I use Ember three to four times a day to get insights into several of my critical biomarker that I wouldn't know without doing blood tests. The device is simple, painless and has become an integral part of my training sessions". Brenda Martinez - Track & Field World Championship Medalist and Olympian. "At the highest level of the sport, it's all about details. With Ember, I'm able to easily and non-invasively track and record my hemoglobin, pulse rate and five other key biomarkers. This data helps me and my coach better understand my body's response to elevation, training load and more. Ember helps me more closely examine my physiology - the engine that drives my performance." Ben Hoffman - 13x 1st Place Ironman Finishes Note: NOT A MEDICAL DEVICE. Results from this app are not for use to diagnose or treat a medical condition. Consult your doctor for diagnosis or treatment of any medical condition. ## Key features - Non-invasive multi-parameter tracking - Measures hemoglobin and pulse rate variability - Quick results in approximately 1 minute - Tracks results by activity - Optimizes elevation training - Detects signs of potential overtraining ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Pack of 25 | $24.99 | one-time | | Pack of 50 | $49.99 | one-time | | Pack of 100 | $99.99 | one-time | ## Recent user reviews (7 of 7) All indexed reviews: https://appshunter.io/ios/app/ember-by-cercacor/id941846110/reviews.md ### 2/5 — Not sure worth the price ATM *2022-11-02, version 5.24* I have owned my Ember device for a few years. Overall I am happy with the package but that’s not to say I have some major concerns: 1) price for the credits, especially after a costly device 2) technical support and app updates. The support team answers questions fast but the updates to the app when there’s an issue take very long to be updated and addressed, leaving one with a useless device for many days. 3) some people have noticed that the Ember device is not FDA approved, therefore the accuracy of it may not be what it claims. The company has yet to address this publicly. If you have the money to spend and what a unique device like this I may see a reason to buy. But this device is similar to many bicycle power meters where you may get an approximate number, not a definite one. And they are both expensive!! ### 1/5 — Inaccurate Hemoglobin- not FDA approved - 3 dollar for each full test *2020-11-29, version 5.18* I checked my hemoglobin using an blood machine in lab and it was 16.7 g/dl but at same time the ember showing my Hgb is 14.1 . Now I understand why FDA did not approved the device ? also each time I do a full test it costing me 3 dollars and I have to pay through buying new credit package which start at $25 which can be used for 8 full test ### 1/5 — Costs credits to use your sensor *2019-03-29, version 5.16* Your sensor comes with a number of "free measurements" but afterwards it costs up to 3 credits (1 credit is 1 dollar) to read all of the data. The device itself is already pricey. Charging an extra few dollars to be able to get all the data your sensor can read is a predatory price model that's really not customer friendly. ### 5/5 — Seamless *2017-12-18, version 3.22* The app works seamless with Ember hardware! Any customer service issues are answered fast and upgrades to app are instant! Works as expected. ### 5/5 — Train Smarter, Recover Better *2017-07-09, version 3.9.1* I love the Ember device! I'm a professional athlete and I have always struggled with the Recovery part of the sport. How do I truly know when I'm tired? Throughout my entire career I have been guessing if I'm Recovered and ready to workout again or not. With the Ember device I don't guess. My coach can track my body's data anytime of the day. How my Hemoglobin changes after a hard workout and how many days it takes for my body to recover again. It's truly a blessing to have an Ember device. I would recommend this device to any athletes ready to make a big jump in their sport. -Brenda Martinez 2013 800m World Silver Medalist 2016 Rio. Olympian ### 5/5 — Great app for Ember device, highly recommend! *2016-08-22, version 1.3.3* The Ember app is a great way to record, store, view, and analyze all of your Hemoglobin and pulse rate data. It is organized with easy to read graphs. A must-have app for any athlete monitoring their hemoglobin! ### 5/5 — Lewis Elliot *2016-08-21, version 1.3.3* I've been using the Ember device for a few months now, and the data I've compiled has been beyond fascinating! The app does a great job to graph out certain aspects of my training and body chemistry based on what work I've done, and what altitude I've been living at during the period. The measurement is quick and easy to do, I actually look forward to taking it a couple times a day. I'm excited to be learning more about myself, I'd say this product is a must-have for anyone looking to reach their highest level in endurance athletics! ## Frequently asked questions about Ember by Cercacor ### What is Ember? Ember is a non-invasive multi-parameter tracker that measures and tracks up to 10 parameters, including hemoglobin and pulse rate variability. It provides insights to help optimize training and understand your body better. ### Does Ember require a device? Yes, this app requires the purchase of an Ember Non-invasive Multi-Parameter Tracking System from cercacor.com. The app itself is free to download and use with the compatible hardware. ### How accurate is Ember? The app provides quick results in approximately 1 minute, allowing users to see trends and track results by activity. While it offers valuable insights, it is important to note that it is NOT a medical device. ### What health parameters does Ember track? Ember tracks and measures hemoglobin, oxygen content, pulse rate variability, and seven other blood constituents. This allows users to see how their body responds to different training methods and conditions. ### Can Ember help with altitude training? Yes, Ember helps you understand how your body adapts to higher altitudes and provides insight into how long to train at elevation to maximize gains prior to a competition. ### Is Ember suitable for detecting overtraining? By measuring oxygen content, pulse rate, and pulse rate variability across a range of activities and conditions, Ember can help users know when they may need to ease up, potentially detecting signs of overtraining. ### What devices is Ember compatible with? Ember is supported on iPhone, iPad, and iPod. The app is designed to work seamlessly with the Ember tracking system on these Apple devices. ### How often is Ember updated? The latest version of Ember is 6.21, and it was last updated on June 21, 2023. This indicates regular updates to improve functionality and performance. ## Version history (last 5 releases) ### 6.21 — 2023-06-21 This latest version fixes an error that would prevent some Premium devices from taking a measurement after selecting all 3 parameter boxes. Premium users should now be able to check all 3 parameter boxes and capture a measurement without issue. ### 6.2 — 2023-05-13 In this release, we have removed the manual "Credits Manager" feature. Now there is new credits system that automatically handles and syncs your credits with our cloud. All credits from before will be transferred to this new system. ### 5.30 — 2022-12-27 - Fixes for iOS 16 compatibility - How to use ember demo video https://www.youtube.com/watch?v=0nODGJkr3zA ### 5.24 — 2021-08-09 - Minor UI improvements ### 5.23 — 2021-03-08 Bug Fixes ## Apps similar to Ember by Cercacor | App | Rating | Price | Category | | --- | --- | --- | --- | | [Reframe Ultra](https://appshunter.io/ios/app/reframe-ultra/id6748083506) | 3.3 (12) | Free | Health & Fitness | | [Heart rate Track：Health plan](https://appshunter.io/ios/app/heart-rate-trackhealth-plan/id6747244680) | — | Free | Health & Fitness | | [KardiaComplete](https://appshunter.io/ios/app/kardiacomplete/id1611446187) | 4.6 (120) | Free | Health & Fitness | | [Wellhero: Heart Health Monitor](https://appshunter.io/ios/app/wellhero-heart-health-monitor/id6448857042) | 4.7 (104) | Free | Health & Fitness | | [Howard](https://appshunter.io/ios/app/howard/id6748033731) | 5.0 (8) | Free | Health & Fitness | | [CONNEQT Health](https://appshunter.io/ios/app/conneqt-health/id1573968788) | 3.7 (25) | Free | Health & Fitness | ## More apps by Willow Laboratories, Inc. - [Nutu](https://appshunter.io/ios/app/nutu/id6478635966) All apps by Willow Laboratories, Inc.: https://appshunter.io/developer/941846109 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-11.*