Comparison

Currenzy vs Sinkstack

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

Head to head
About

Currenzy

This app offers seamless currency conversion for everyday needs. It features a unique Safari extension to automatically convert currencies on web pages and an action extension for use in other apps. Convert prices using your iPhone camera while traveling.

Highlights
  • Automatic web page currency conversion
  • App extension for text sharing
  • Camera-based price conversion
  • Offline currency conversion
  • Support for over 150 currencies
  • Historical charts
  • Built-in calculator
Features
Currently charting
Read full description

Currenzy is a beautiful currency converter app for daily currency conversion needs. Its unique feature automatically converts currencies on a web page through its safari extension. With Currenzy, you can convert currencies anywhere inside your iPhone or iPad, where text selection is shareable. When you are on apps like mail or notes, select the text and share it with the Currenzy app extension to see the conversion. You can use your iPhone camera to convert prices on a price tag or a hotel menu while traveling abroad. Currenzy is also privacy-conscious, so none of your data leaves your device. • Supports all major currencies. (Over 150+ World Currencies. Digital Currencies - BTC, ETH) • Safari Extension Support - the ability to currency convert in your browser • Action Extension Support helps convert currencies in all apps where text selection is possible. • Home Screen widgets • Apple Watch Support • Bookmark List • Historical Chart • Built-In Calculator • Personalized Actions - custom exchange rate, transaction fee, • Support for custom exchange rate • Can work without an internet connection • Supports Dynamic Type • Functional and easy to use • Clean Interface & Natural Gestures • Universal App - iPhone, iPad, and Apple Watch • Custom App Icon support for a personalized touch • Handoff support, start on one device and resume on another • iCloud sync • Dark and Light modes with multiple color accents • Universal purchase for all your devices • Family Sharing support • Localized in French, German, Italian, Japanese, Simplified Chinese, and Spanish Currenzy is designed to make currency conversion as simple as possible. For any feedback and suggestions, please e-mail us at hello@waplestuff.com."

About

Sinkstack

Features
Currently charting
Read full description

Sinkstack turns irregular bills into a plan for every paycheck. Create a sinking fund for each bill you only see a few times a year, such as car insurance, holidays, renewals and repairs, and Sinkstack shows what to set aside from each upcoming paycheck so each one is covered by its due date. NEW IN 4.0: PAYCHECK PLAN Choose how often you are paid and one payday. Each of your next 4, 6 or 12 paychecks then lists what to set aside for every fund: • Funds with a due date spread what they still need evenly across the paydays before that date, exact to the cent. • Recurring bills start their next cycle automatically after each due date. • Funds without a due date use the contribution you planned. • Bills that land before your next payday are flagged with the amount still needed. • Enter your take-home pay (optional) to see what is left after the set-asides. • Book the next paycheck's set-asides as deposits in one step, or export the plan as CSV. ALSO NEW • Backup & Restore: one file with every fund, ledger entry, pay schedule and Payday Bridge plan. Restore checks the whole file first and saves a copy of your current data before replacing anything. • Widgets: a Next Payday countdown (you set the schedule in the widget; it never shows balances) and Quick Actions for the allocator, Paycheck Plan and Payday Bridge. • Control Center control and Siri / Shortcuts actions to open the allocator, Paycheck Plan or Payday Bridge. • A redesigned tab layout: Funds, Paychecks, Calendar, Insights and Settings. EVERYTHING ELSE YOU ALREADY HAVE • Unlimited sinking funds with goals, due dates, weekly to annual contributions, revolving funds and recurring bills that reset after each due date. • Paycheck allocator: split new money across your funds proportionally, by priority or evenly, booked as dated deposits. • Payday Bridge: put income and payments on real dates to find the lowest balance before payday and test a late payday. • Funding Calendar: 12 months of set-asides and bill dates, with busy months marked. • Insights, catch-up options for funds that fell behind, a what-if solver, PDF statements and CSV export. • 60+ templates for common irregular expenses. PRIVATE BY DESIGN No account, no bank login, no ads, no tracking. Your data stays on your device. Amounts use exact decimal math. One purchase. No subscription. Sinkstack is a planning tool. It does the arithmetic on the numbers you enter; it does not move money, connect to a bank or give financial advice. iPhone and iPad.

Screenshots

Currenzy4 screens
Sinkstack4 screens

Verdict

The call

The clearest difference is in-app purchases: Sinkstack at none against Currenzy's 3. Sinkstack also leads on price ($0.99 vs $1.99) and iOS requirement (17.0 vs 26.0). On update cadence, ads, chart position 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

Currenzy costs $1.99 and Sinkstack $0.99 up front. Currenzy sells 3 one-off in-app purchases. Sinkstack asks for nothing beyond the download.

UpkeepUpdate frequency

Currenzy ships an update every 5 days, Sinkstack every 6 days. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

Scorecard3 real differences · 8 level
Currenzy versus Sinkstack: the parameters behind the verdict, then further details
ParameterCurrenzySinkstack
Price$1.99$0.99 — better
Rating4.8 (173 ratings) — better—
Positive reviews64.9% of reviews—
Number of ratings173 — better—
Update frequencyEvery 5 days — betterEvery 6 days
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaid—
Best chart rank#93#38 — better
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS26.017.0 — better
Further details — not scored
Size72 MB6 MB
Age rating4+4+
DeveloperRaja VijayaramanRobert Corbin

In-app purchases

3 purchases

Currenzy

One-time3
  • Small Tip$0.99
  • Medium Tip$3.99
  • Huge Tip$9.99
None

Sinkstack

No in-app purchases

Questions

Is Currenzy free?
Currenzy costs $1.99, and also offers in-app purchases.
Is Sinkstack free?
Sinkstack costs $0.99, with no in-app purchases.
Do Currenzy or Sinkstack have ads?
Neither Currenzy nor Sinkstack shows ads.
Which is updated more often, Currenzy or Sinkstack?
Currenzy ships an update every 5 days, and Sinkstack every 6 days. Most recently, Currenzy was updated on November 6, 2026 and Sinkstack on November 5, 2026.
Which is more popular, Currenzy or Sinkstack?
Currenzy currently peaks at #93 in the App Store charts, and Sinkstack at #38. Chart position reflects recent download velocity rather than total install base.

Other comparisons