On this page you will find the list of all the self-tracking tools that I have personally tested and found to be reliable and trustworthy. I use them on a regular basis or when conducting my self-experiments (until something new and better comes along).


bodymedia tracker quantified self personal analytics personal informatics tools by measured me blogIf you are looking for a device to track how much calories you burn while working out, doing household chores, or even sleeping, Bodymedia is your best choice. Unlike Fitbit, it estimates your calorie loss using multiple sensors (accelerometer, skin galvanic response, body temperature and heat flux), and unlike heart-rate monitors like Polar, does not require wearing that uncomfortable chest strap all day. Bodymedia helped me to loose 3% of body fat just in 4 week by helping to monitor and control daily calorie balance. It also helps me to evaluate the effectiveness of different workout routines . The Bodymedia automatically provides me with two important metrics related to physical health, fitness and diet: calorie expenditure and metabolism. However, it’s effectiveness as a tool for measuring sleep quality is somewhat questionable: based on my experiments, it does not measure sleep efficiency accurately enough.
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You can purchase Bodymedia tracker here or take advantage of 15% discount offer here

Alternatives: I am looking into testing Basis tracker in 2013.

Flexiscore® Body Flexibility Measuring Mat

quantified body flexibility flexiscore mat review by measured me blogIt is well known fact that stretching helps to reduce muscle tension, increase blood circulation and enhance the joints and muscular coordination. The mat from Flexiscore® helps me to quantify the flexibility of my lower limbs and back. It replicates the standard standard sit and reach test, producing a Flexiscore® (between 70 and 140 points). Incorporating stretching exercises into my workout routine earlier this year helped me to increase  my Flexiscore from 80 to 100. This winter, I plan to start yoga classes, and look forward to increasing my score even further.

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You can purchase Flexiscore® Mat here or here

Accu-Measure Skinfold Calipers

body fat percent measuring tools fat loss progress tracking calipersThe calipers are the cheapest (compared to BodPod and  Dexa Scan) and the most accurate (compared to biolectric impedance scales) method to measure and track body fat percentage (BFP) on a daily or weekly basis. The Accu-Measure calipers that I used during my #fitsperiment proved to be a reliable and convenient tool for tracking my progress. Based on my personal experience, a few measurements taken in three body sites (in my case, pectorials, abdominal area and a thigh) are enough to get a reliable and accurate estimate of BFP.

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You can purchase Accu-Measure skinfold calipers here.

Accupro Electronic Food Scale

diet tracking diet analytics nutrition analytics diet quantification tools Accupro electronic food scale Maintaining steady calorie balance requires knowing both caloric expenditure and intake. I blogged how the only way to get accurate estimates of how much calories you consume is to cook your meals at home and weight and log all the ingredients. I even devised an interactive calculator using Google Spreadsheets (similar to the one in this post). The Accupro food scale proved to be very useful in a couple of my self-experiments, including #fitsperiment and meal satiety project (in which I would weight meal and after consuming it assess its satiety/heaviness on a 10-points scale; by analyzing the data I found that the optimal weight of my lunches and dinners should be 350-400 grams).

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You can purchase Accupro Electronic Food Scale here

Alternatives: I am looking into testing Kitrics digital nutrition scale in 2013.

Sleep Time App by Azumio

app for tracking sleep quantified self sleep toolsIf  you would like to measure your sleep quality but prefer something more affordable than Zeo then I strongly recommend Azumio’s Sleep Time app. Unlike other sleep measuring apps, this app produces more detailed statistics, including sleep quality, and length of light and Deep+REM sleep. In my self-experiments, the average estimates of total time slept by Sleep Time app and Zeo were very close (although if you drill down to Deep+REM estimates, the differences are more substantial). Both Sleep Time and Zeo total time slept estimates also had pretty much the same correlations with my subjective assessment of sleep. So if you are looking for a cheap but reliable way to track amount of sleep you are getting on a daily basis, Sleep Time app, in my opinion, can easily replace Zeo. However, if you are looking for a more in-depth insights about your sleep patterns (e.g., how much of deep and REM sleep do you get), then Zeo would be a better tool. Sleep Time app also doubles as a smart alarm clock that wakes you up at the most optimal time (when you are in the light sleep phase).

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You can download Sleep Time for iOS (99 cents)  here (the Android version of the app is not available yet)

Alternatives: I am looking into testing Sleep Cycle app in 2013.

rTracker App

rtracker app for quantified self self tracking self experimentationLet’s admit it, there are some variables in our lives that we cannot track automatically. If you would like to measure and track on a regular basis certain “custom” variables, like “irritation”, or self-esteem then you should download rTracker. It allows you to put together custom questions, use multiple scales and answer options, and easily enter and export data. Since I started using rTracker in October, the self-tracking routine have become so much easier and efficient. Read my detailed review of rTracker here and you can download my actual self-tracking data that was collected using rTracker in the MY DATA section of Measured Me.

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You can download rTracker App (99 cents) for iOS  here