Power Gap Is Out: A Budget App Built Around One Number
Power Gap is out now on the App Store for iPhone. It replaces the budget with a single number — how much you have left to spend — that updates as you log expenses by voice or a tap, with no bank login and no categories to maintain. Your data stays on your device or in your own iCloud, and the first 14 days are free.
Power Gap is out. It's on the App Store today, built for iPhone, and the first 14 days are free.
We could tell you about the features. But the more useful thing to explain is the decision underneath them — because it's the reason the app looks nothing like the budgeting apps you've probably already tried and stopped using.
Budgeting apps answer the wrong question
Most money apps are built for the monthly review. They sort your spending into categories, draw charts, and tell you — accurately, and too late — that you spent 38% more on restaurants than you planned. That's a report card. Nobody changes their behaviour from a report card.
The moment that actually decides your month isn't the review. It's the small, ordinary decision you make while standing somewhere: the second round, the checkout screen, the yes to dinner on Thursday. In that moment you don't need categories. You need one number, and you need it to be true.
Almost nobody has that number. Your bank balance certainly isn't it — it still contains the rent, the subscription that leaves on the 28th, and the money you already promised to savings. Acting on your balance is how people end up surprised by their own account twice a month.
What the gap actually is
Your gap is what's genuinely free to spend once everything already committed is out of the way — bills, recurring costs, and what you've decided to save. Not what's sitting in the account. What's actually yours to use.
Two things make it behave like real life rather than like a spreadsheet.
- It runs payday to payday, not from the 1st. The calendar month is an accounting artefact. If you're paid on the 25th, your money's rhythm starts on the 25th, and a budget that resets on the 1st is describing someone else's life.
- What you don't spend today rolls into tomorrow. Skipping the takeaway isn't an abstract virtue you might feel good about in four weeks — tomorrow's number is visibly larger. Restraint pays out immediately, which is the only reliable way a habit survives.
A normal day with it
That's the whole loop. There is no category tree to maintain, no monthly re-planning ritual, no reconciliation session. If using a money app costs more than a few seconds a day, you will stop — so the design constraint was to make it cheap enough to survive an ordinary, tired Tuesday.
- You open the app and see one number: what's safe to spend today.
- You buy lunch and log it in about three seconds — say "twelve dollars lunch" out loud, or tap it in.
- The number updates. You're on track, close to the line, or over — and if you're over, tomorrow tops it back up. No lecture.
- Rent, subscriptions and salary were entered once and repeat on their own, so the daily loop stays short.
- Whatever you set aside goes to a named goal you can actually see growing, rather than to a vague sense that you should save more.
Who it's for — and who it isn't
We'd rather say that plainly than win a download from someone who'll be disappointed in a week. If you want automatic imports and don't mind linking your bank, there are good apps for that, and this isn't one of them.
| Power Gap fits you if… | Something else fits you better if… |
|---|---|
| You want one number you can act on today | You want detailed category reports and charts |
| You'd rather not hand your bank login to a third party | You want fully automatic transaction imports |
| You've abandoned budgeting apps because they were too much work | You genuinely enjoy reviewing and re-categorising transactions |
| You're happy logging an expense in a few seconds | You know you'd never log anything manually |
| You're on iPhone | You need Android or a web app |
Privacy isn't a feature here — it's the architecture
Power Gap has no bank login because there's nothing to log into. There's no account either: no name, no email, no sign-up. Your data sits on your iPhone, and if you turn on sync it goes to your own iCloud through Apple's CloudKit — never to our servers.
That's not a privacy policy promising restraint. It's a structure where the restraint isn't ours to break: we can't lose what we never hold, and we can't sell what never reaches us. You can export or delete everything in a single tap.
Alice, the assistant inside the app, follows the same rule. She runs on your device with Apple Intelligence, asks permission in the chat before reading your finance overview, and proposes rather than acts — logging an expense or creating a goal only happens once you confirm it.
What it costs
The first 14 days are free with every feature included. After that Power Gap needs an active subscription, and the current price is shown inside the app before you're charged. There's no free tier that quietly harvests your data instead of your money — that trade is the thing we built the app to avoid.
Where to start
Set up your income and your fixed costs once — it takes a few minutes — then let the number do the rest. Most people find the first useful shift happens in about a week, when the daily figure stops being information and starts being the thing they check before deciding.
Power Gap is on the App Store now. If you've been meaning to get a grip on your money and every previous attempt died in a spreadsheet, this one asks considerably less of you.