DoseAngelDoseAngel
DoseAngel is a harm reduction app that visualizes how your substances overlap over time, so you can plan ahead, avoid dangerous combinations, and never accidentally re-dose.
No spam, just a heads up when the app is live and occasional updates.
A quick tour of the core features.
Every substance you start is modeled as a rise-and-fall curve. The Live screen sums them all in real time, showing exactly what's active in your system right now, and an estimated prediction of what's coming next. It's a forecast based on typical timing, not a guarantee.
Use Plan Mode to lay out the doses you're thinking of taking over the course of a session, and preview the combined curve before starting anything for real. For each entry, choose one of three ways to set its timing: the clock time you'll take it, the clock time you want to peak, or the clock time you want to reach a specific point during the comedown. These are estimates, not exact predictions, since individual response varies. Any plan can also be overlaid on top of the Live graph, so you can compare it against what's actually happening in real time.
Pick any two of the 18 bundled substances to see documented interaction risk, from mild synergy to dangerous combinations, sourced from TripSit and PsychonautWiki data.
Starting a substance that interacts with something already active triggers an automatic warning before you confirm, so risky combinations are hard to miss by accident.
Starting a second dose of a substance you're already tracking, before the first one has peaked, triggers a warning showing how long until it peaks, so you can make an informed call before you redose.
Customize any of the 18 bundled substances to match your own experience. From Settings → Manage (Substances Library), tap Customize on a profile to create your own editable copy with its own onset, peak, and offset timing.
Everything is stored locally on your device. There are no accounts, no servers, and no data ever transmitted anywhere.
What you can configure.
Follow your system's light or dark mode automatically, or lock DoseAngel to Light or Dark regardless of your device setting.
Toggle the warning badges that appear in the substance list when something you're about to add has a known interaction with a substance that's already active.
Toggle the confirmation dialog that appears before you start a substance with a known interaction risk against something already active.
Toggle the confirmation dialog that appears before you start a type that's already active and hasn't peaked yet.
Choose how an active plan appears on the Live graph: as simple start-time markers, or as the full predicted curve for each planned substance.
Everything else you might want to know before downloading.
Features planned for future releases.
Local notifications to help you follow a saved plan as it happens, without needing to keep the app open.
Emergency services numbers by country, available directly in the app.
Addiction hotline numbers by country, for anyone who wants to talk to someone about their substance use.
A full walkthrough of every feature, built into the app itself, so help is always one tap away.
Questions, bug reports, or feature ideas, all welcome.
Reach out any time at
odedr@doseangel.com →