Dosi vs Zero: Intermittent fasting tracker Alternative in 2026
Zero is a fasting tracker originally built around intermittent fasting windows, later expanded into a broader longevity app with food logging and biometrics. It does not track peptides or injections. Biohackers and GLP-1 users often run Zero alongside a dosing app like Dosi.
| Feature | Dosi | Zero |
|---|---|---|
| Compound database | 180+ compounds | None |
| GLP-1 tracking | Yes, native | No dosing, some food/weight trend overlap |
| TRT ester support | Yes | No |
| Half-life calc | Yes | No |
| Reconstitution calc | Yes | No |
| Body-map injection rotation | Yes | No |
| AI insights | AskDosi assistant | Personalized fasting plans |
| Price | $7.99/mo or $39.99/yr | $9.99/mo or $69.99/yr Zero Plus |
| Free tier | Yes | Yes, limited |
| Platforms | iOS, Web, Android pending | iOS, Android |
When to choose Dosi
Choose Dosi if your primary practice is a peptide, GLP-1, or TRT protocol. Zero will not help you with dose math or site rotation.
When to choose Zero
Choose Zero if intermittent fasting is the anchor of your routine and you want a clean timer, journal, and fasting-focused community. Zero is the default fasting app for a reason.
Try Dosi free
180+ compound database, body-map injection rotation, reconstitution math, and the AskDosi assistant. Free to start.
Start Tracking Free →Educational use only. Feature facts verified April 2026 from each vendor's public site and app listing. Pricing and features may change. This content is for informational purposes only and does not constitute medical advice. Consult your healthcare provider.