Cronometer: Calorie Counter vs Zero: Fasting & Food Tracker
At a glance
| Attribute | ||
|---|---|---|
| Subtitle | Nutrition, macro, diet tracker | Intermittent Fasting Timer |
| Developer | Cronometer Software Inc | Zero Longevity Science, Inc. |
| App Store rating | 4.77 (88729 reviews) | 4.82 (445187 reviews) |
| Pricing | Free · 7 in-app purchase option(s) | Free · 2 in-app purchase option(s) |
| Trial | Free version available with limited features; Gold subscription required for advanced tools. | Free trial available for Zero Plus subscription. |
Pricing & trial
| Attribute | ||
|---|---|---|
| Summary | Free · 7 in-app purchase option(s) | Free · 2 in-app purchase option(s) |
| Trial | Free version available with limited features; Gold subscription required for advanced tools. | Free trial available for Zero Plus subscription. |
Who each app suits best
Cronometer: Calorie Counter
- Data-Driven Users — Ideal for those who want precise, verified nutritional data.
- Micronutrient Trackers — Best for users monitoring specific vitamin or mineral deficiencies.
Zero: Fasting & Food Tracker
- Intermittent Fasting Beginners — Provides clear structure and educational content to start a fasting routine.
- Protein-Focused Dieters — Ideal for those wanting to track protein intake alongside fasting windows.
Feature checklist
Coverage from our catalog flags. Values are editorial signals, not a guarantee of every device build.
| Feature | ||
|---|---|---|
| Photo logging | Yes | Yes |
| Audio / voice logging | No | No |
| AI / natural‑language text logging | No | No |
| Barcode scanner | No | No |
| Apple Health | Yes | Yes |
| Macro tracking | Yes | Yes |
| Micronutrients | Yes | No |
| Water tracking | Yes | Yes |
| Workout tracking | Yes | No |
| Fasting | Yes | Yes |
| Coach connection | Yes | No |
| Logging accuracy | Yes | Yes |
Guide scores
Editorial model scores on our scale — distinct from star ratings in app stores.
| Criterion | ||
|---|---|---|
| Overall | 9 | 8 |
| Accuracy | 10 | 7.8 |
| Beginner Friendliness | 8.9 | 7.9 |
| Coachability | 7.9 | 6.9 |
| Ease Of Use | 9.1 | 8.1 |
| Feature Depth | 9.5 | 8.5 |
| Pricing Value | 8.2 | 7.2 |
| User Feedback | 9 | 8 |
Review themes
Short synthesis of what users often praise or criticize — not a substitute for reading recent reviews yourself.
Highlights users liked
Cronometer: Calorie Counter
Micronutrient tracking; Verified food database
Zero: Fasting & Food Tracker
Fasting timer; Weight loss results
Common complaints
Cronometer: Calorie Counter
Missing remaining macro totals; Syncing issues
Zero: Fasting & Food Tracker
High subscription cost; Inflexible fasting presets
Bottom line
For most people prioritising overall polish and scores in our dataset, Cronometer: Calorie Counter is the stronger default — still compare pricing and features above before you switch.