Apps that keep
your data yours.

RationalBit is a one-person studio building private, Apple-native apps. No trackers. No ad SDKs. No accounts you didn't ask for — and in Money Map's case, not even a bank login.

Three apps on the App Store Built in the open by one developer

The apps

Three apps. One obsession.

Each one solves a problem I actually had, and each one is built so that your data never has to leave your own devices.

Money Map app icon
Money Map
Finance · iPhone · Mac

Budgeting that never asks for your bank login.

Money Map is a personal budget for iPhone and Mac that works without connecting to your bank. No Plaid. No account. No password. You import the file your bank already gives you — or type it in — and your data stays in your own iCloud.

  • No Plaid, no Yodlee, no credentials to hand over
  • Drop in a .QFX and it loads — no field mapping
  • Your data stays in your own iCloud, encrypted
UV Buddy app icon
UV Buddy
Weather · Health & Fitness · iPhone · Apple Watch

Stop guessing. Stop burning.

UV Buddy watches the UV index so you don't have to. It runs a background timer per person, tuned to their Fitzpatrick skin type and SPF, and taps them when it's time to reapply or get out of the sun.

  • A background sun timer for every person in the family
  • UV to the decimal, plus a 7-day hourly forecast
  • Apple Watch complications, widgets and Live Activities
Walk With Jesus app icon
Walk With Jesus
Health & Fitness · Lifestyle · iPhone

A journal between you and God.

Not a generic verse of the day. You write a worry, a praise or a question, pick how you're feeling, and Walk With Jesus finds scripture that meets what you actually wrote — then reads the whole chapter with you.

  • Verses chosen for what you actually wrote
  • An explanation, a prayer and an encouragement for each
  • A timeline of your walk, and a monthly portrait of it

FAQ

Questions, answered honestly.

Is there a budget app that doesn't link to your bank account?

Yes. Money Map has no bank connection at all — no Plaid, no Yodlee, no login. You either type transactions in or import a file you downloaded from your own bank. The honest trade-off is that balances don't refresh by themselves; if you want zero effort, a bank-linked app will suit you better.

How to budget without a bank login
Can you open a QFX file on an iPhone?

Yes, with the right app — despite what most search results say. Money Map imports .QFX files directly on iPhone and Mac with no field mapping. A QFX is Quicken's flavour of the OFX format: a plain-text file of transactions that most software simply refuses to read.

How to open a QFX file without Quicken
Is it safe to link your bank account to a budgeting app?

Mostly, yes — but security and privacy are different questions. Reputable aggregators are genuinely secure and don't hand your password to the app developer. What you're really agreeing to is that a third party keeps a copy of your transaction history. If that's the part you object to, you want an app with no connection at all.

Budget apps that don't use Plaid
What is the best Quicken alternative for iPhone?

It depends what you're actually leaving Quicken for. If you need investment tracking, tax reports or double-entry accounting, a desktop tool like GnuCash or Moneydance is a better landing spot. If you want your budget and your transaction history on your phone, Money Map imports the same .QFX files your bank exports for Quicken.

Leaving Quicken for iPhone and iPad
Is there an app for the 50/30/20 budget?

Several, but check one thing first: can it budget by percentage rather than a fixed dollar amount? If not, you'll be recalculating three numbers by hand every time your income changes. Money Map supports percentage-based distribution per category, so the rule re-allocates itself.

How to run a 50/30/20 budget
How do I import a bank statement into a budget app?

Download a CSV or QFX from your online banking (usually under Statements → Download), then import it. CSV needs you to map the columns once, because every bank orders them differently; QFX is self-describing, so it needs no mapping at all.

Importing a bank statement, step by step
Do RationalBit apps track you?

No. There's no advertising SDK and no cross-app tracking in any of them. Money Map has no account to create and stores your financial data in your own iCloud; Walk With Jesus keeps journals local-first with encrypted iCloud sync and no personal data in analytics.

Who builds RationalBit's apps?

Carlos Garcia — one developer, working directly on every app. That's why these apps are opinionated about privacy and why you can email a real person and get an answer.

Budget without handing over your bank login.

Money Map is free for your first 100 transactions. No account, no email, no bank connection.

Free for up to 100 transactions. Unlimited transactions require a subscription.