Zero vs Simple: which intermittent fasting apps should you pick?
Our independent head-to-head from the 2026 edition of Best Intermittent Fasting Apps.
Zero
The reference fasting app – clean, research-backed, no nonsense.
8.7/ 10
Simple
AI fasting coach with food photo logging.
8.1/ 10
Zero vs Simple: head-to-head specs
| Zero | Simple | |
|---|---|---|
| Our score | 8.7/10 | 8.1/10 |
| Pricing | Free; Plus $69.99/yr | $29.99/mo or $89.99/yr |
| Best for | Most people starting IF | Combining fasting with light food tracking |
| Platforms | iOS, Android | iOS, Android |
Zero vs Simple: pros and cons compared
Zero pros
- Clean, focused UI
- Research-anchored content from credible advisors
- Good HealthKit integration
Zero cons
- Plus tier is needed for personalized plans
- Some content gates feel arbitrary
Simple pros
- Decent AI photo logging
- Friendly onboarding
Simple cons
- Pricey
- Coaching is more cheerleading than science
Zero vs Simple: which is better in 2026?
Winner: Zero. The cleanest, most evidence-respecting fasting app. Free tier alone covers 90% of users.
Zero vs Simple in one sentence
- Zero – The cleanest, most evidence-respecting fasting app. Free tier alone covers 90% of users.
- Simple – Fine product, aggressive pricing. Worth it only if you'll use the AI logging daily.
See the full best intermittent fasting apps ranking for every app in this category, or browse all head-to-heads.