SaifGauge: Kakeibo Budget

"How much can I spend?" — SaifGauge answers the moment you open it, with one big balance gauge.

No bank connection. No account. No internet. Everything stays on your device. And no ads.

WHO IT'S FOR
- You budget from one payday to the next
- Full-featured budget apps never stuck for you. You just want to know "how much is left"
- You don't want to link your bank or cards to an app

ONE BALANCE GAUGE
The star of the screen is a single large "left to spend" gauge. Each spending category gets its own mini gauge, plus a simple pie chart. No flood of numbers, no complicated graphs.

BUILT FOR THE PAYDAY CYCLE
- Set your cutoff day freely (end-of-month supported)
- When the cutoff lands on a weekend, choose earlier / later / as-is
- Budgets are saved per period. Changing this month's budget never rewrites the past
- Carry your leftover balance into the next period: add it as a lump sum, or add it on top of each day's budget — or don't carry it over at all
- Register fixed costs like rent and subscriptions once, and they post automatically every month (bi-monthly and yearly cycles too)

FAST ENTRY WITH A DEDICATED KEYPAD
A keypad made for budgeting, with a "00" key for entering larger amounts fast.
Add tax with a single tap (8% / 10%) to see the tax-included amount on the spot.
Your most-used amounts appear as suggestion chips — one tap to fill them in.
Category chips also show what's left for the period, so you see the remainder before you pick.

THOUGHTFUL DETAILS
- Home Screen widgets: the small widget keeps your balance gauge in sight, and the medium widget adds what's left per category
- Reorder your spending categories (envelopes)
- One date-ordered list across every category
- Back up your data to a file and restore it anytime — switching phones is just one import
- Bright, simple, easy-to-read screens (dark mode supported)

PRIVACY
- No bank linking / no account
- No external communication (data stays on device)
- No ads / no tracking
On the App Store, our privacy label reads "Data Not Collected."

WHAT'S FREE / WHAT YOU CAN ADD
The balance gauge, expense entry, amount suggestion chips, three spending categories, the current period, and the small widget are free to use.
A single in-app purchase (one-time, pay once) unlocks:
- Unlimited spending categories
- Weekend adjustment for the cutoff day
- Rollover of your remaining balance
- Full history of past periods
- The medium widget with per-category remainders
- 18 theme colors
- Projected balance at closing day

SUPPORT
Send bugs and requests from "Settings > Support" inside the app. We keep improving with every update.