Neptune works on iPhone, Android, and the web

Neptune is a personal finance and budgeting app you can use anywhere. Start on your phone to check balances and log spending on the go, then open the web dashboard on a laptop when you want the full picture. Your data syncs instantly across every device, so your budget is always up to date.

iPhone and iPad

Download Neptune free from the App Store. Requires iOS 16 or later.

Android

Get Neptune free on Google Play. Works on phones and tablets running Android 8 or later.

Web

No download needed. Sign in at neptunebudget.com to use the full dashboard in any browser.

Everything you need to budget, in one app

Neptune connects securely to more than 12,000 banks and credit unions through Plaid, then does the busywork for you: importing transactions, categorizing them with AI, and keeping your budgets and net worth current.

• Automatic bank sync for spending, balances, and bills
• AI-categorized transactions you can correct once and forget
• Budgets that show what is safe to spend, by category
• Net worth tracking across accounts, cards, and loans
• An AI assistant that answers questions about your money in plain English

Start budgeting in about three minutes

1. Create your free account

Sign up with email on any device. No credit card required to start.

2. Connect your bank

Link your accounts securely through Plaid. Neptune never sees or stores your bank login.

3. See where your money goes

Neptune imports and categorizes your recent transactions so your budget builds itself.

Free, ad-free, and private by design

Free to start

Create an account and connect your first bank for free. Upgrade only when you want more institutions, households, or deeper AI insights.

Ad-free, always

Neptune earns from subscriptions, not ads. We never sell your financial data or use it for advertising.

Bank-level security

Data is encrypted in transit and at rest, and bank connections are handled by Plaid so your credentials stay between you and your bank.

Frequently asked questions

Is Neptune free to download?

Yes. Neptune is free to download on iOS, Android, and the web, and free to start using. Paid plans add more connected institutions, shared households, and richer AI insights.

What devices does Neptune support?

Neptune runs on iPhone and iPad (iOS 16+), Android phones and tablets (Android 8+), and any modern web browser. One account syncs across all of them.

How do I get the 33% discount?

Subscribe on the web at neptunebudget.com and enter code NEPTUNE33 at checkout to take 33% off your first 12 months. The discount applies to web subscriptions, not in-app purchases.

Is my bank data safe?

Yes. Bank connections run through Plaid, so Neptune never stores your bank login. Your data is encrypted in transit and at rest, and is never sold.