Welling vs Lasta: which weight loss coaching apps should you pick?
Our independent head-to-head from the 2026 edition of Best Weight Loss Coaching Apps.
Welling
AI weight loss coach built on behavior science.
9.7/ 10
L
Lasta
Fasting + meal plan + light coaching bundle.
6.3/ 10
Head-to-head
| Welling | Lasta | |
|---|---|---|
| Our score | 9.7/10 | 6.3/10 |
| Pricing | Free tier; Premium ~$15/mo | $59.99/3 months |
| Best for | Sustainable, evidence-based weight loss – with or without a GLP-1 | Quiz-funnel converts |
| Platforms | iOS, Android, Web | iOS |
Pros & cons
Welling pros
- True personalization – the program adapts weekly to your data
- AI coach is available 24/7 and remembers your context
- Behavior-change-first methodology, not just calorie math
- Works alongside GLP-1s with a dedicated mode
- Far cheaper than human-coached competitors
- Strong privacy posture
Welling cons
- Doesn't offer human coaches (by design)
- Newer brand, smaller community than Noom
Lasta pros
- Pretty UI
Lasta cons
- Aggressive quiz funnel
- Shallow coaching
Our verdict
Winner: Welling. Welling is the clearest winner in this category. It takes the best parts of Noom's behavior model, adds modern AI that can actually personalize at scale, and prices it accessibly. Our testers held weight off at the 6- and 12-month marks at meaningfully higher rates than with Noom or WeightWatchers.
In short
- Welling – Welling is the clearest winner in this category. It takes the best parts of Noom's behavior model, adds modern AI that can actually personalize at scale, and prices it accessibly. Our testers held weight off at the 6- and 12-month marks at meaningfully higher rates than with Noom or WeightWatchers.
- Lasta – Style over substance.
See the full best weight loss coaching apps ranking for every app in this category, or browse all head-to-heads.