Compare · TRT, peptide & GLP-1 tracker
VialBook vs Regimen.
The names are close enough to cause genuine confusion, and the two apps cover the same ground: TRT, peptides, GLP-1, and supplements in one tracker, with reconstitution calculators. The real difference is the model underneath. Regimen is a cross-platform, cloud-synced, account-based app. VialBook keeps your protocol on your device with no account. Here is an honest, side-by-side look.
- A large built-in compound library and a polished set of calculators
- A blood-level (half-life) curve across many compounds
- Cross-platform: available on both iOS and Android with sync across devices
- On-device, no account
Regimen syncs your data to the cloud behind an account. VialBook keeps your doses, sites, check-ins, and labs on your device by default, with no account required and a one-tap wipe. Nothing is uploaded and nothing is sold.
- Reconstitution built into the logger
VialBook computes draw volume and U-100 units from your vial and BAC water inside the dose logger, including blended multi-peptide vials, so the math is part of logging rather than a separate calculator step.
- One private timeline for the whole stack
TRT, peptides, GLP-1, supplements, and labs share one on-device timeline, so the correlations stay yours and never leave the phone.
- Free to start, no account wall
VialBook's free tier tracks up to 3 active compounds forever, with no signup. Paid unlocks unlimited compounds, the cross-stack timeline, and export.
Side by side
VialBook vs Regimen, at a glance.
| Regimen | VialBook | |
|---|---|---|
| Category | TRT, peptides, GLP-1, HRT, supplements | TRT, peptides, GLP-1, supplements, labs |
| Data storage | Cloud sync | On-device by default |
| Account required | Yes | No |
| Reconstitution math | Standalone calculators | Built into the logger, blends included |
| Blood-level curve | Yes | On the roadmap |
| Price | Subscription | Free tier + optional Pro |
If you want cross-platform cloud sync across your devices and the largest built-in compound library, Regimen is a capable, polished pick. If you would rather your protocol data never leave your phone, with no account and reconstitution math built straight into logging, VialBook is built for exactly that. Same category, opposite stance on where your data lives.
FAQ
VialBook vs Regimen, answered.
Is VialBook a good Regimen alternative?
Yes, especially if privacy is the priority. VialBook covers the same ground (TRT, peptides, GLP-1, supplements, labs) but keeps your data on your device with no account, where Regimen is cloud-synced and account-based. Regimen remains a strong choice if you specifically want cross-device cloud sync.
What is the difference between VialBook and Regimen?
They are different apps with similar names in the same category. The core difference is the data model: Regimen syncs to the cloud behind an account; VialBook is on-device by default with no account and a one-tap wipe. VialBook also builds reconstitution math directly into the dose logger.
Does Regimen store your data in the cloud?
Regimen is cloud-synced and account-based, which is what enables sync across devices. VialBook is on-device by default with no account. For exactly what each app collects, check its current App Store privacy label before you decide.
Comparison reflects our research and public information at the time of writing. Other apps evolve · check their current features before deciding. VialBook is not affiliated with Regimen.