Sure

Privacy-focused personal finance tracker with multi-currency support, bank syncing, and budgeting tools.

Image	ghcr.io/we-promise/sure:stable
Web UI	http://your-server:3005
Config path	{BASE_DIR}/sure/postgres
Website	sure.am
Source code	GitHub

Resource Impact

Performance	Medium — Rails + Sidekiq workers
Storage	Low — Small database

Installation

mithrandir install sure

Also see Actual Budget for an alternative finance app.

Architecture

Sure runs as a multi-container stack:

Container	Description
sure_web	Rails web application (port 3005)
sure_worker	Sidekiq background job processor
sure_postgres	PostgreSQL 16 database
sure_redis	Redis for caching and job queues

Secrets

Variable	Description
SURE_SECRET_KEY_BASE	Rails secret key base — auto-generated with openssl rand -hex 64 during install
SURE_DB_PASSWORD	PostgreSQL password (default: sure_password)
SURE_OPENAI_ACCESS_TOKEN	OpenAI API key for AI-powered features (optional)
SURE_OPENAI_URI_BASE	Custom OpenAI-compatible API base URL (optional)
SURE_OPENAI_MODEL	OpenAI model to use (optional)

When HTTPS is enabled via Caddy, RAILS_ASSUME_SSL is automatically set to true so Sure correctly handles HTTPS traffic behind the reverse proxy.

Setup

• Open the web UI at http://your-server:3005
• Create an account and start tracking your finances

Clients

Mobile apps are being built for iOS and Android but are not yet finished and available.