What is the 52 week money challenge and how much will I save?

You save $1 in week 1, $2 in week 2 and so on up to $52 in week 52 — $1,378 in a year. Multiply it ×2, ×5 or ×10 to save more.

Do I have to check the weeks in order?

No. Fill any cell in any order. The ✓ on the home screen fills this week's cell, or the first open one if this week is already done.

Can I change the deposit amounts?

Long-press a cell to record what you actually put in. To set your own amounts from the start, use 'My own goal' with a goal amount and a number of cells.

I get paid every two weeks or monthly. Will it work?

Yes. 'My own goal' lets you choose weekly, every 2 weeks or monthly.

Can I use my own currency?

Weekjar uses your phone's currency automatically, and you can pick another currency when you create a jar.

Does it connect to my bank?

No. Weekjar never moves money and needs no account. The money goes into your own savings account or envelope; the app just tracks it.

Will I lose my progress on a new phone?

Use Settings → Export backup to save a file, then Import backup on the new phone.

Will it spam me with notifications?

Only on the morning a new cell opens and on the evening of its last day. You can turn reminders off in Settings.

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How to do the 100 envelope challenge (amounts and a realistic timeline)

In the 100 envelope challenge you number envelopes 1 to 100, pick one, and put that many dollars in it. There is no order — you choose the envelope that fits your week. Fill them all and you have 1 + 2 + … + 100 = $5,050.

Total and timeline

Each envelope holds its number times your unit. How long it takes depends on how many envelopes you fill per week.

Unit	Total	2 a week	7 a week (daily)
$1	$5,050	about 50 weeks	about 15 weeks
$0.50	$2,525	about 50 weeks	about 15 weeks
$2	$10,100	about 50 weeks	about 15 weeks

How to pick envelopes

Right after payday, pick a high number (70–100). Clear the heavy envelopes while you have the money.
In a tight week, pick a low number. One small envelope keeps the streak alive.
Alternate high and low so you are not left with only big envelopes at the end.
With paper envelopes, keep a list of the ones left — once they get mixed up it is hard to tell which are empty.

Doing it with Weekjar

Weekjar's 100 envelope jar shows envelopes 1 to 100 as round cells. Tap any envelope to fill it, switch to 'Open cells' to see only the empty ones, or sort by amount to see how many big envelopes are left. The unit follows your currency.

Envelopes 1 to 100, pick any

Get Weekjar on Google Play