Lipoly
Your Fat Loss Sprint Guide
Noom asked for 6 months. Lipoly asks for 3 weeks.
Same goal. Different commitment. The research backs the sprint.
Lipoly
Your Fat Loss Sprint Guide
Same goal. Different commitment. The research backs the sprint.
Noom is built on the premise that sustainable weight loss requires a slow shift in psychology and habits over months. That's a legitimate theory. The problem is that for most people, slow progress and no finish line is what drives dropout — not lack of behavioural insight.
The Purcell RCT (The Lancet, 2014) studied exactly this: 200 adults on rapid vs. gradual weight loss protocols. The gradual group had an 18% dropout rate. The rapid group: 3%. Slow doesn't mean sustainable. It often means quitting before results appear.
Lipoly is a protocol app, not a coaching subscription. You enter your stats. The app calculates your sprint targets. You follow the structure for 14–28 days — with a defined finish line from day one.
| Noom | Lipoly | |
|---|---|---|
| Philosophy | Slow behaviour change; ~500 kcal deficit | Science-backed rapid fat loss protocol |
| Duration | Indefinite monthly subscription | 14–28 day sprint + 14-day mandatory recovery |
| Calorie approach | Moderate deficit with colour-coded food system | Calculated macros from your body fat % and lean body mass |
| Protein targets | Generic guidance | Personalised: 2.2–3.0 g/kg LBM |
| Training | General encouragement | Structured strength program, 2x/week required |
| Defined end date | No | Yes — day 14, 21, or 28 |
| Science basis | Behaviour change / CBT | PSMF: 50+ years of clinical research |
| AI meal planner | No | Plan meals in plain English to hit daily targets |
| Cost | ~$60–$200/month | $9.99/wk · $29.99/mo · $149.99 lifetime |
Purcell et al. (The Lancet Diabetes & Endocrinology, 2014): 81% of the rapid weight loss group achieved a clinically significant target. Only 50% of the gradual group hit the same target — in three times the time. Dropout: 3% rapid vs. 18% gradual.
Nackers et al. (2010) found that fast initial weight losers had better long-term maintenance outcomes than slow or moderate losers — directly contradicting the slow-is-safer narrative.
Long-term regain was identical in both groups. The speed of loss does not determine the speed of regain. What matters is what you do after — which is exactly what Lipoly's mandatory 14-day Maintenance Phase is designed to address.
Enter weight, body fat %, sex. The app calculates your Sprint Level and assigns your daily protein, fat, and calorie targets — personalised, not generic.
14, 21, or 28 days of structured protocol. Plan each day's meals in plain English — the AI meal planner verifies your targets are hit. Track habits and supplements daily. Refeeds scheduled automatically. No colour-coding. No guessing.
Mandatory 14-day Maintenance Phase locks in results, resets metabolism, and gives you two weeks of practising maintenance-level eating — building the post-sprint habits that make results last. Then you're done — or you run another sprint. The goal is to leave the app with a clear sense of real food portions and quantities that work for your body. Unlike subscription coaching apps where ongoing use is the business model, Lipoly is designed to be completed.
Purcell 2014: Both rapid and gradual groups regained similar proportions of weight over 3 years. Rate of loss doesn't determine rate of regain. Post-sprint behaviour does — which is what the Maintenance Phase builds.
Crash diets: no protein targets, no training, no defined end, no recovery. Lipoly has all of these. 2.2–3.0 g/kg LBM protein. Strength training required. 800 kcal floor. Mandatory maintenance. Different thing.
See your numbers
Sprint level, calculated macros, and a recommended duration — based on your body composition.
Free 7-day trial · No charge today · Cancel anytime