Harm reduction information

Fracton

Look up substances and combinations, browse drug-checking results, and keep a private journal on your device.

Install FractonOpen in browser
  • No accounts
  • No data collection
  • No analytics or tracking
  • No ads
  • Sources stay visible

Information only. Fracton cannot tell you whether using a substance is safe and is not medical advice. In an emergency, call local emergency services.

What Fracton includes

Substances, combinations, samples, and a private journal.

Fracton puts the main information in one place. Sources and personal notes stay separate. There are no accounts, feeds, streaks, or scores.

Reference

Substances

Find dose, timing, effects, precautions, testing, aliases, and tolerance information.

Browse substances

Interactions

Combinations

Choose substances and see warnings for each pair. TripSit and PsychonautWiki sources stay separate.

Check combinations

Drug-checking results

Samples

Browse drug-checking results with claimed and detected substances, dates, places, images, and summaries.

Open Samples

Your journal

Journal

Log experiences, phases, costs, routes, and notes on your device. Review them by timeline, calendar, use, spending, and tolerance.

Open Journal

How it works

A quick look at Fracton.

See the main parts of the app.

Substance overview

Start with the basics.

Read the description, other names, basic properties, chemical structure, dose, timing, effects, and safety information.

  • Sources stay visible
  • Names and key details in one place
Fracton LSD overview showing a TripSit description and a locally rendered chemical structure.

Dose guidance

See doses by route.

Dose ranges are grouped by source and route. Warnings stay next to the information they apply to.

  • Sources stay separate
  • Different routes
  • Notes and limits are visible
Fracton MDMA dose tab showing a TripSit dose note, source controls, oral route, and dose ranges.

Public sample feed

Browse test results.

Look through drug-checking samples by substance, place, and source. See what was claimed, what was found, and any reported amount.

  • Source and date stay attached
  • Photos and detected substances
  • A result is not your own test
Fracton Samples showing pill and tablet drug-checking results with detected substances, reported amounts, and locations.

Journal history

Keep track of past experiences.

Search your experiences, see dates and substances, and add entries without sending your journal to us.

  • Search your history
  • See multiple substances
  • Optional encryption
Fracton Journal showing a searchable list of past experiences with dates and substances.

Experience timeline

See what happened over time.

Put entries on one timeline so you can compare phases, times, routes, amounts, and notes.

  • Change a phase time
  • See current phases and elapsed time
  • Keep notes per entry
Fracton candyflipping experience showing overlapping LSD and MDMA timelines with detailed entries.

Consumption statistics

Review your use over time.

View entries by day, week, month, or year. Compare substances with bars or totals. Everything comes from your local journal.

  • Day, week, month, and year views
  • Bars and totals
  • Totals from local entries
Fracton Consumption statistics showing monthly stacked bars for locally recorded substances.

Spending statistics

See what you spent.

Add spending to entries and review costs by substance, currency, and time period. Your journal stays on your device.

  • Totals by currency
  • Breakdown by substance
  • Different time ranges
Fracton Spending statistics showing monthly euro totals as stacked bars by substance.

Privacy

Your data stays yours.

Fracton has no accounts, analytics, tracking, or ads. The project does not store your journal.

Read the privacy policy
Accounts
None. There is no sign-up, login, profile, or account.
Data collection
None by Fracton. Your journal, searches, favourites, settings, and custom values are not sent to us.
Analytics and tracking
None. There are no analytics, tracking, telemetry, or ad IDs.
Advertising
None. There are no ads or sponsored content.
Storage
On the web, data is stored in your browser under fracton.me. Each browser and profile has its own copy.
Encryption
Optional AES-256-GCM encryption covers journal contents only. Other app data is not encrypted.
Remembered keys
If you choose a remember option, the browser keeps a protected unlock key in IndexedDB. Lock now removes it and the decrypted journal.
Data durability
You can ask your browser to keep Fracton data from being cleared automatically. This is not a backup.
Network access
The site must load from the web. Other sites are contacted only when you open an external link or choose a source refresh.

Keep in mind

Information is not a guarantee.

Fracton can

  • Show dose, timing, effect, and interaction information from named sources.
  • Show warnings and uncertainty.
  • Help you keep a private record.

Fracton cannot

  • Check a substance’s identity, purity, dose, or personal medical risk.
  • Promise that a dose, combination, or situation is safe.
  • Replace a doctor, emergency care, or professional help.

Sources

See where the information comes from.

Fracton stores source data for offline use. Source names stay visible, your own values stay separate, and the original projects do not endorse Fracton.

PsychonautWiki

Dose, timing, tolerance, and substance information.

CC BY-SA 4.0View source project

TripSit

Substance descriptions, dose notes, and combination warnings.

Non-commercial attributionView source project

Subjective Effect Index

Effect explainers and media for offline use.

CC BY-NC-SA 4.0View source project

Public drug-checking services

Drug-checking records with source, date, place, claimed and detected substances, amounts, and limits.

Publisher-specific termsOpen samples feed

Install

Use Fracton from your home screen.

Add Fracton to your iPhone, iPad, or Android home screen. No app store or account needed. Open it online once to save the files for offline use.

Chrome on Android: full-screen tipOptional

For the best full-screen layout, paste this address into Chrome before installing:

chrome://flags/#web-app-short-edges-cutout-mode

Set Web App Short Edges Cutout Mode to Enabled, then relaunch Chrome and return here to install.

If your Chrome version does not have this setting, Fracton still works. Choose Install instead of Create shortcut when both are shown.

Fracton

Your reference and journal, one tap away.

Offline accessNo account needed

Before adding sensitive information: use a normal browser, turn on Journal encryption under More > Settings, choose a strong passphrase, and lock the journal when done. Avoid remember modes on shared devices. Fracton cannot recover a forgotten passphrase or deleted browser data.

Get started

Use Fracton on your phone.

Install it with Safari on iPhone or Chrome on Android, then open it from your home screen.

Install Fracton