Comparison

Bitkey vs RainyDay Jar

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Bitkey

This app offers a secure and simple way to manage your bitcoin with a multi-signature wallet and innovative recovery tools. It prioritizes user control and privacy, allowing you to own and protect your digital assets without relying on third parties.

Highlights
  • 2-of-3 multi-signature security
  • Seed phrase-free recovery tools
  • Device verification for transfers
  • Private balance and transaction tracking
  • Bitcoin inheritance planning
  • Self-custody of private keys
Read full description

Bitkey is the safe, simple, and secure way to own and manage your bitcoin. It's a mobile app, hardware device, and a set of recovery tools all in one wallet. Bitkey is a 2-of-3 multi-signature wallet which means there are three private keys protecting your bitcoin. You always need two out of three keys to sign a transaction, giving you extra protection. If you hold bitcoin with an exchange, you don't control it. With Bitkey, you hold the private keys and control your money. Recovery Bitkey recovery tools help you recover your bitcoin if you lose your phone, hardware, or both, without needing a seed phrase. Device verification Verification on your Bitkey device provides an additional layer of security for confirming transfers and critical settings. Privacy Keep your balance and transactions private, with protections to ensure that everyone else — from onlookers to our servers — stays in the dark. Inheritance Put an inheritance plan in place for your bitcoin, with a process that’s simple to set up and secure by design. Visit https://bitkey.world to purchase the Bitkey hardware wallet and https://bitkey.world/learning-hub to learn more about how it works.

About

RainyDay Jar

Features
Read full description

Give the thing you're saving for a place to grow. A car repair. The holidays. A quiet weekend away. RainyDay Jar turns the amounts you log into progress you can see. No bank connection, no account, no ads. NAME IT. BUILD IT. WATCH IT FILL. • Create a jar and set an optional target • Log an addition or a take-out with a short note • See the fill level, what's left, and the private history behind it NOTICE YOUR MOMENTUM See your total saved and your strongest in-progress goal. A repeat-deposit helper can fill in your last amount, and always waits for your confirmation. TWO JARS, FREE Free includes two jars, additions and take-outs, and backup import. RAINYDAY PRO: ONE LIFETIME PURCHASE Unlimited jars and portable JSON backup export. Not a subscription. YOUR GOALS STAY YOURS Jar names, amounts, and notes stay on this device. No account, no advertising or analytics SDK, no bank connection, no cloud sync. Start with a name. Add the first amount. Watch your progress take shape. Made thoughtfully by House Rhymaun. Less noise. More life. RainyDay records amounts you enter. It does not hold, save, transfer, or invest real money, connect to your bank, or provide financial advice. It is a visual savings log, not a budgeting or debt-payoff service.

Screenshots

Bitkey4 screens
RainyDay Jar4 screens

Verdict

The call

The clearest difference is in-app purchases: Bitkey at none against RainyDay Jar's 1. Bitkey also leads on iOS requirement (15.2 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. RainyDay Jar sells 1 one-off in-app purchase. Bitkey asks for nothing beyond the download.

UpkeepUpdate frequency

Bitkey ships an update every 11 days, RainyDay Jar weekly. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 8 level
Bitkey versus RainyDay Jar: the parameters behind the verdict, then further details
ParameterBitkeyRainyDay Jar
PriceFreeFree
Rating4.6 (138 ratings) — better—
Positive reviews71.0% of reviews—
Number of ratings138 — better—
Update frequencyEvery 11 daysWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.2 — better17.0
Further details — not scored
Size172 MB5 MB
Age rating17+4+
DeveloperBlock, Inc.Marc Rhymaun

Bugs and requests

Bitkey

Reported bugs

10 issues
  • App inaccessible (black screen with logo)
  • Cannot send money (transaction error)
  • App closes immediately upon opening
  • Toggles not working in settings
  • Cannot generate more than one receive address without reloading app
Show 5 more
  • Fingerprint setup not working
  • Inheritance feature bug (stuck in a loop)
  • App crashing after Tyson fight
  • Bitcoin price not updating live
  • Daily spend limit without passcode/biometric login

Requested features

16 requests
  • Dark mode option
  • Lightning Network integration
  • Face ID/Biometric unlock for app
  • Passcode for app unlock
  • Live Bitcoin price updates
Show 11 more
  • Ability to generate multiple receive addresses easily
  • LDK integration
  • Improved emergency exit plan (seed phrase export)
  • Support for more languages
  • xPub export
  • Built-in estate planning feature
  • Swap stored fingerprint or add multiple
  • Multi-custodial option for tax-deferred IRAs
  • Advanced user settings
  • Live chart for BTC price
  • Hide security hub tab bar option

RainyDay Jar

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Bitkey

No in-app purchases

1 purchases

RainyDay Jar

One-time1
  • RainyDay Pro Lifetime$4.99

Questions

Is Bitkey free?
Bitkey is free to download, with no in-app purchases.
Is RainyDay Jar free?
RainyDay Jar is free to download, with in-app purchases available.
Do Bitkey or RainyDay Jar have ads?
Neither Bitkey nor RainyDay Jar shows ads.
Which is updated more often, Bitkey or RainyDay Jar?
Bitkey ships an update every 11 days, and RainyDay Jar weekly. Most recently, Bitkey was updated on November 7, 2026 and RainyDay Jar on October 31, 2026.

Other comparisons