Lipoly
Your Fat Loss Sprint Guide
Not another points system. A protocol with a finish line.
WW asks you to manage your eating indefinitely. Lipoly asks you to commit to 3 weeks — then you're done.
Lipoly
Your Fat Loss Sprint Guide
WW asks you to manage your eating indefinitely. Lipoly asks you to commit to 3 weeks — then you're done.
Weight Watchers teaches portion awareness and sustainable habits through an indefinite system. For many people, it works — over time. But for the significant proportion who've done multiple WW rounds, lost weight, regained, and started again, the open-ended model is the problem, not the solution.
Without a defined endpoint, motivation depends entirely on willpower — and willpower degrades across months. The Purcell RCT (The Lancet, 2014) found that 18% of gradual dieters dropped out before hitting their target. The rapid, structured group: 3%.
Lipoly is built on the opposite premise: commit hard for a short, defined time — then recover. The finish line is visible from day one.
| Weight Watchers / WW | Lipoly | |
|---|---|---|
| System | Point-based food scoring | Macro-based protocol from your body composition |
| Speed | ~0.5–1 lb/week | 1.5–2.5 lbs/week during sprint (weeks 2+) |
| Duration | Indefinite | 14–28 day sprint + 14-day mandatory recovery |
| Protein focus | General guidance | Precise: 2.2–3.0 g/kg lean body mass |
| Training | Encouraged but optional | 2x/week strength — required |
| Defined finish | No | Yes — day 14, 21, or 28 |
| Science basis | Portion control and behaviour | PSMF: Harvard research (1970s) through *The Lancet* RCT (2014) |
| AI meal planner | Barcode scanner / food database | Plan meals in plain English to hit daily targets |
| Cost | ~$23–$50/month | $9.99/wk · $29.99/mo · $149.99 lifetime |
Tsai & Wadden (2006) meta-analysis: structured VLCD protocols produced 16.1% weight loss vs. 9.7% for conventional gradual dieting in the same period.
Purcell et al. (The Lancet, 2014): 81% of rapid dieters hit a clinically significant target. 50% of gradual dieters did — over three times the duration. Long-term regain was the same in both groups.
The assumption that rapid weight loss leads to faster regain is not supported by the evidence. What determines long-term results is post-sprint behaviour — not how fast you lost the weight.
Enter your stats. The app assigns your Sprint Level (1, 2, or 3) and calculates your exact daily protein, fat, and calorie targets. No points. No colours. Precise numbers for your body.
14, 21, or 28 days. Plan each day's meals with the AI meal planner — so your targets are met by design. Track supplements, habits, and training daily. Refeeds scheduled automatically. Everything structured.
The 14-day Maintenance Phase after every sprint is non-negotiable. It locks in your results, resets your metabolism, recalibrates your hormones, and gives you two weeks of practising maintenance-level eating — so holding the result becomes the default, not the effort.
The FLS mandates 2.2–3.0 g/kg LBM protein and twice-weekly resistance training — the two variables that determine lean mass retention during a deficit. Longland et al. (2016): high protein + training at 40% deficit → gained lean mass while losing fat.
The Fat Loss Sprint is built on PSMF — 50+ years of clinical use, endorsed by NICE (UK), EASO, and AHA/ACC. Zero deaths documented in modern supervised PSMF protocols using complete protein and electrolyte supplementation (Seim & Flanagan, 1984; multiple subsequent safety reviews). Common first-week side effects (mild headache, fatigue) are transient and managed with electrolyte supplementation.
Built on 50+ years of clinical research. Endorsed by NICE, EASO, and AHA/ACC.
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