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

Payday Bridge projects a dated cash pool so you can see shortfalls before payday, even when the period ends with money left over. HOW IT WORKS 1. Open Payday Bridge from the dashboard. Enter an opening cash amount, desired buffer and 1–90 day horizon, or explore the labeled example. 2. Add dated income and payments. Mark uncertain income, then compare the entered baseline with uncertain income excluded or all paydays delayed by up to 14 days. 3. Inspect the lowest daily closing balance, same-day posting-order sensitivity and exact daily ledger. Save the plan and share its dates and assumptions. Envelope tracking, recurring schedules, Funding Calendar, paycheck allocation, catch-up planning, statements and existing scenario tools remain available. Saved plans preserve exact cents; failed writes keep the previous in-memory state and corrupt files are preserved. WHAT TO KNOW Manual USD planning for one cash pool, with up to 200 entries per plan and 50 saved plans. Amounts are stored as integer cents. Payments-before-income assumes all same-day outgoings precede incoming cash; actual posting order is unknown. Delayed income beyond the horizon is reported separately. No bank account is connected and no payments or envelope-balance changes occur. Include all obligations and avoid counting envelope transfers and their eventual bills twice. iPhone and iPad.

Screenshots

Currenzy4 screens
Sinkstack3 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

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on October 16, 2026 and October 12, 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 (164 ratings) — better—
Positive reviews64.9% of reviews—
Number of ratings164 — better—
Update frequencyEvery 5 daysEvery 5 days
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaid—
Best chart rank#111#48 — better
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS26.017.0 — better
Further details — not scored
Size72 MB5 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 5 days. Most recently, Currenzy was updated on October 16, 2026 and Sinkstack on October 12, 2026.
Which is more popular, Currenzy or Sinkstack?
Currenzy currently peaks at #111 in the App Store charts, and Sinkstack at #48. Chart position reflects recent download velocity rather than total install base.

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