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Thoughtful apps, built to last.

LRM Labs designs and builds apps for iPhone and Android. Two so far — Fastn and Ntervals — each shaped until it feels right, with more on the way.

See the apps
Fastn app icon — an amber progress ring with a flame at its centre, on black

Intermittent fasting tracker

Fastn

Intermittent fasting you’ll actually stick with.

  • One honest ring. Elapsed time, current zone and goal distance at a glance — the same ring on the Lock Screen and home screen.
  • Five fasting zones. Fed, Fat Burn, Ketosis, Autophagy and Deep Ketosis, each with a short, sourced explanation.
  • Protocols and a builder. Start on 16:8, move to 18:6 or OMAD when you’re ready, or design your own fasting and eating windows.
Download on theApp StoreGET IT ONGoogle Play
More about Fastn
Fastn’s home screen: the fasting timer ring at 9 hours, the week’s streak and today’s fasting, eating and streak stats
Fastn’s home screen: the fasting timer ring at 9 hours, the week’s streak and today’s fasting, eating and streak stats
Ntervals app icon — a green stopwatch with an inner progress ring

Interval workout timer

Ntervals

Build an interval timer in seconds. Then train by ear.

  • A timer in seconds. Steppers, smart defaults, and starter templates for Tabata, HIIT, boxing rounds, EMOM and AMRAP.
  • Train by ear. Work, rest and round cues duck your music instead of stopping it, and keep playing in the background.
  • Live Activity & widget. The countdown, phase and round follow you to the Lock Screen, Dynamic Island and home screen.
Download on theApp StoreGET IT ONGoogle Play
More about Ntervals
The Timer tab: continue Tabata with one Start button, and saved workouts such as HIIT, Boxing Rounds and EMOM 10, each with a play button
The Timer tab: continue Tabata with one Start button, and saved workouts such as HIIT, Boxing Rounds and EMOM 10, each with a play button

Need a hand?

Frequently asked questions and a contact form are on one page.

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