# App.lactrace.com - LacTrace brings context to your lactate measurements **URL:** \ **Category:** External Projects\ **Created:** [16 January 2026 13:40 UTC](https://forum.intervals.icu/t/app-lactrace-com-lactrace-brings-context-to-your-lactate-measurements/119972 "2026-01-16T13:40:06Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Jon\_Helge\_Nistad](https://forum.intervals.icu/user_avatar/forum.intervals.icu/jon_helge_nistad/32/47258_2.png) [@Jon\_Helge\_Nistad](https://forum.intervals.icu/u/Jon_Helge_Nistad)\ **Post date:** [16 January 2026 13:40 UTC](https://forum.intervals.icu/t/app-lactrace-com-lactrace-brings-context-to-your-lactate-measurements/119972/1 "2026-01-16T13:40:06Z")
Lactate data without context has limited value If you’re doing any lactate testing (even irregular, field-based, non-lab), you already know the problem: - Measurements live in notes, photos, spreadsheets - No clean link to actual workouts - Hard to see trends unless you test like a lab rat LacTrace is trying to address problem and the core idea is simple: Store lactate measurements as first-class data and attach them directly to training sessions. What it does today: - Log lactate measurements (mobile-friendly, field use) - Attach measurements to real workouts - Build step tests when you want - View lactate vs pace / effort over time - Pulls activity data directly from intervals.icu What it’s not: - Not a black-box “AI threshold detector” - Not a replacement for intervals.icu - Not opinionated about protocols I’ve opened it up with early access (3 months free) for anyone who wants to kick the tires and give technical feedback. 👉 [https://app.lactrace.com](https://app.lactrace.com) Coupon: FREE-3-MONTHS-EARLY-BIRD (limited to 100 persons) Important! Read [User Guide](https://docs.google.com/document/d/1L_ab4WkR8HL2o5Vr166BTGcnDsSPuX24rzWVhRsrJjE/edit?usp=sharing) to get a better overview of the functionality Any feedback or questions welcome! ![Screenshot 2026-01-16 at 13.13.18](https://forum.intervals.icu/uploads/default/original/3X/5/f/5f026792df51d467c865dfd0ec93de22e2c0ba99.jpeg) ![Screenshot 2026-01-16 at 13.15.55](https://forum.intervals.icu/uploads/default/original/3X/c/9/c9665542fbfabbd0606c3d2a60b6c6dc59ddc53e.png) ---
**Author:** ![Jon\_Helge\_Nistad](https://forum.intervals.icu/user_avatar/forum.intervals.icu/jon_helge_nistad/32/47258_2.png) [@Jon\_Helge\_Nistad](https://forum.intervals.icu/u/Jon_Helge_Nistad)\ **Post date:** [19 January 2026 07:42 UTC](https://forum.intervals.icu/t/app-lactrace-com-lactrace-brings-context-to-your-lactate-measurements/119972/2 "2026-01-19T07:42:21Z")
Added a small video guide on how to [add traces (lactate measurements) to existing activities](https://www.youtube.com/watch?v=Aj74naXt0mg). ---
**Author:** ![Jon\_Helge\_Nistad](https://forum.intervals.icu/user_avatar/forum.intervals.icu/jon_helge_nistad/32/47258_2.png) [@Jon\_Helge\_Nistad](https://forum.intervals.icu/u/Jon_Helge_Nistad)\ **Post date:** [23 January 2026 23:29 UTC](https://forum.intervals.icu/t/app-lactrace-com-lactrace-brings-context-to-your-lactate-measurements/119972/3 "2026-01-23T23:29:46Z")
Added support for sharing your data with other users of the platform. Coaches can be given write access so they can manage lactate samples and step test creation. ---
**Author:** ![Jon\_Helge\_Nistad](https://forum.intervals.icu/user_avatar/forum.intervals.icu/jon_helge_nistad/32/47258_2.png) [@Jon\_Helge\_Nistad](https://forum.intervals.icu/u/Jon_Helge_Nistad)\ **Post date:** [27 January 2026 21:57 UTC](https://forum.intervals.icu/t/app-lactrace-com-lactrace-brings-context-to-your-lactate-measurements/119972/4 "2026-01-27T21:57:46Z")
Added support for visualizing intensity distribution. In a matrix view (including lactate measurements in the skyline). Wrist HR on the activity 9th of January.. ![image](https://forum.intervals.icu/uploads/default/original/3X/f/c/fcfd73f9ddb8776f3ad86f5d0d9d4f07ef8213aa.jpeg) And on the activity detail page: ![image](https://forum.intervals.icu/uploads/default/original/3X/d/a/dabf92386c840951fb183d09c4d01fde2087afae.jpeg) ---
**Author:** ![Niklas\_Birksted](https://forum.intervals.icu/user_avatar/forum.intervals.icu/niklas_birksted/32/32425_2.png) [@Niklas\_Birksted](https://forum.intervals.icu/u/Niklas_Birksted)\ **Post date:** [18 February 2026 11:50 UTC](https://forum.intervals.icu/t/app-lactrace-com-lactrace-brings-context-to-your-lactate-measurements/119972/5 "2026-02-18T11:50:51Z")
Hey man, thank you for the great tool. A couple of questions/suggestions: 1. I forgot to use the promo-code, are there any free spots left? I just signed up 2. Is there a way of structuring the tests of others? Right now it seems to be designed for self testing, but I am mainly testing other people than my self 3. How do you change the LT values, so they are not fixed at 2 and 4 mmol? 4. Thank you again, this is going to come in so handy. I wish it was fully integrated with intervals All the best, Niklas ---
**Author:** ![Jon\_Helge\_Nistad](https://forum.intervals.icu/user_avatar/forum.intervals.icu/jon_helge_nistad/32/47258_2.png) [@Jon\_Helge\_Nistad](https://forum.intervals.icu/u/Jon_Helge_Nistad)\ **Post date:** [17 April 2026 11:51 UTC](https://forum.intervals.icu/t/app-lactrace-com-lactrace-brings-context-to-your-lactate-measurements/119972/6 "2026-04-17T11:51:33Z")
New coupon code for people that wants to try it out for some months for free. Valid until end of July 2026. LACTRACE-3MONTH-FREE