What is Radical Fat Loss? +
Radical Fat Loss is a movement-first, drug-free fat-loss system for iPhone and Apple Watch, built around two daily non-negotiables — hit your protein, hit your steps. You log lightly; the app does the calculating, tracking and pattern-finding, then shows its work in plain language. It's opinionated rather than configurable, honest about what it won't promise (no weight-loss guarantees, no medical claims), and includes a dedicated on-medication mode for the GLP-1 era. Built by Radical Health OÜ in Estonia.
Who makes Radical Fat Loss? +
It's built by
Radical Health OÜ, a small software company in Estonia (registry code 17536495), on one rule: radical honesty. The founder built it because the app he wanted didn't exist — and uses it daily. Contact:
hello@radicalhealth.app.
What is Radical Attune? +
Radical Attune is a general-wellness relaxation and guided-breathing app for iPhone, iPad and Apple Watch. It synthesises every tone live rather than playing back a recording, offers
eleven guided breathing patterns each shown with its evidence grade and primary sources, and — with an Apple Watch and headphones — can respond to your live breath–heart coherence. It is not a medical device and does not diagnose, treat, prevent or monitor any condition. No account, no ads, no analytics, and nothing on a Radical Health server. Currently pre-launch.
See the app →
Is Radical Fat Loss available yet? +
Not yet — it's pre-launch. Join the early-access list on this site (or tap any App Store button) and we'll email you the moment it launches — one email at launch, nothing before.
Is my data private? +
Yes, by design. Your health and weight data
stay on your device, not on our servers, and we never sell your data or use it for ads. Optional features that send anything off-device — AI coaching and photo estimates — are off until you turn them on and run on your own API key. The website itself uses only cookieless, EU-hosted analytics. Full details are in our
Privacy Policy.
How much does Radical Fat Loss cost? +
Radical Fat Loss starts with a
14-day free trial, then becomes a membership: the published price is
€14.99/month and never moves, but you lower what you actually pay by committing to a longer term (annual works out to about €8.99/month) and by training consistently — down to a floor of €9.99/month, or €5.99/month on annual. No ads, and we never sell your data. This is Radical Fat Loss pricing only — pricing for
Radical Attune hasn't been announced.
Does it work offline? +
Yes. Your data lives on your device, so the core runs without a connection — logging, targets, fasting, trends, widgets and the Apple Watch app all work offline. Only the optional extras reach out: AI coaching and photo estimates (on your own key), and barcode lookups.
Will my data sync between devices? +
Your data stays on your device, so there's no cloud account quietly syncing it between phones. Your iPhone and Apple Watch keep each other in step, and your AI key can travel via iCloud Keychain; to move everything to a new phone you export a backup and import it — it's in your hands, not on our servers.
Do you give diet or medical advice? +
No. Radical Health is a self-tracking tool, not a medical service. For medical or dietary guidance, consult a qualified professional.
What's a pause day? +
A pause day is your get-out-of-jail card for a messy day. Mark any day as paused — you forgot to log, or life got in the way — and it's excluded from your intake averages and your streak rather than counting as a failure. It bridges your streak instead of breaking it. (Your weight trend still counts the day, by design.)
Do I have to fast? +
No. The fasting window is optional structure, not a requirement and not a fat-loss trick. A set eating window (16:8 by default) simply makes it easier to eat less — and the timer runs itself from your meal log. Skip it entirely and the plan still works; protein and steps are the only two daily non-negotiables.
Will I lose muscle while losing fat? +
That's the risk the app is built to manage. Hitting your
protein floor and doing a little gentle strength work preserves the muscle you'd otherwise lose in a deficit — resistance training prevents roughly 93.5% of it. The app judges progress by fat lost with muscle held, not by the scale alone.
See the evidence →
Is high protein safe for my kidneys? +
For most people with healthy kidneys, a higher-protein diet is generally considered safe. Existing kidney disease changes that — so if you have, or might have, any kidney problem, talk to your doctor before starting. This is general information, not medical advice.
Is it suitable if I'm over 50? +
Yes — it's deliberately friendly to beginners and people over 50. The emphasis on walking and moderate strength work (no training to failure) directly targets the muscle loss that accelerates with age, and no gym background is required.
Can I use it while travelling or on a hectic week? +
Yes — that's what Travel/Chaos mode is for. It drops the calorie target entirely and keeps only your protein and step floors, so a disrupted week bends instead of breaking. And any individual day can be a forgiven pause day.
Does it work if I'm on Ozempic or another GLP-1? +
Yes — there's a dedicated
on-medication mode. On a GLP-1 (semaglutide/Ozempic/Wegovy, tirzepatide/Mounjaro/Zepbound) the risk flips to under-eating, so the mode asks "are you eating enough?", guards your protein, and protects lean mass — never nagging you to eat less.
More on our GLP-1 page →
Do I need an Apple Watch? +
No. An iPhone is all you need — Apple Watch is optional. If you have one, you get a glance view, ring complications and a Lock-Screen Live Activity for your fast, but every core feature works from the phone alone.
