Weekjar: 52 Week Challenge

Weekjar turns saving money into a simple weekly habit: one cell a week, and by this time next year your jar is full.

Pick a savings challenge, put the money aside, tap the cell. That's it.

THE 52 WEEK MONEY CHALLENGE, YOUR WAY
• 52 weeks · up: save $1 in week 1, $2 in week 2 … $52 in week 52. That's $1,378 in a year.
• 52 weeks · down: start with $52 and finish with $1, so December is light.
• 100 envelope challenge: envelopes 1 to 100, pick any envelope you like. $5,050 when you're done.
• My own goal: enter your goal and how many cells, and Weekjar works out the amount per cell. Weekly, every 2 weeks or monthly – save on your payday.

TAP ANY CELL, IN ANY ORDER
Short this week? Fill a smaller cell. Got a bonus? Chip off the big ones at the end. Every cell is a round coin on a grid, so you can see the jar fill up.
Long-press a cell to record what you actually put in, when it differs from the plan.

YOUR CURRENCY, YOUR AMOUNTS
Weekjar uses your phone's currency automatically – dollars, euros, pounds, won, yen and more – and you can change it per jar. Multiply the challenge ×2, ×5 or ×10 to save more.

STAY ON TRACK WITHOUT NAGGING
• A reminder when a new cell opens and on its last day – nothing on the other days.
• Home-screen widget: see this week's amount and fill the cell with one tap, without opening the app.
• Milestones at 25%, 50%, 75% and 100% so you can see the finish line coming.
• Several jars at once: Christmas, a vacation, an emergency fund.

YOUR DATA STAYS ON YOUR PHONE
No account, no sign-up, no bank connection. Weekjar never moves money – it's your tracker, the money goes into your own savings account or envelope. Export a backup file any time and import it on a new phone.

Good for:
• the 52 week challenge and money saving challenge
• the 100 envelope challenge
• a Christmas fund, a vacation fund or a debt-free plan
• saving with your kids, one cell a week

Start your first jar today. Small amounts add up.