Weekjar: 52 Week Challenge

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Everyone
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Everyone
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About this app

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.
Save money one cell a week. Any order, your currency, 100 envelopes too.
Updated on
Oct 6, 2026
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Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Location, App activity and 2 others
  • This app may collect these data types
    Location, App activity and 2 others
  • Data is encrypted in transit
  • Data can’t be deleted

What’s new

First release: 52 week, reverse, 100 envelope and custom savings challenges, a coin-grid jar, weekly reminders, a home-screen widget and backup.
Content rating
Everyone
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App support

About the developer
콜렛
bloodturtle@naver.com
대한민국 12105 경기도 남양주시 두물로27번길 30-6, 301호(별내동)
+82 10-5231-1994

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