Swarmval

Calculator

Currency Converter for iPhone and iPad

Convert between 170+ currencies on iPhone, with rates cached locally so the converter works offline on a plane, in a foreign country with no cell, or anywhere XE’s ad-loaded app gives up. For $19.99 once.

Free to try. Pro $4.99/month (3-day free trial), $14.99/year, or $19.99 lifetime. No weekly subscription traps.

Availability

Planned app page

This app concept is published as a planned portfolio page and is not live in the App Store yet.

Best for

170+ currencies

Every active ISO 4217 currency, plus crypto pairs (BTC, ETH) as conversion endpoints. Search by symbol (USD, JPY) or country (Japan, Mexico) — both work.

Privacy

Private by default

Currency Converter is planned around local-first handling for files and app data.

iPhone and iPad Planned portfolio app No ads
9:41
Currency Converter Money
32.4 GB possible
Duplicate photos
Review before delete
12.1 GB
Large videos
Review before delete
8.3 GB
Screenshots
Review before delete
2.4 GB
Features

Built around the work people actually need to finish.

170+ currencies

Every active ISO 4217 currency, plus crypto pairs (BTC, ETH) as conversion endpoints. Search by symbol (USD, JPY) or country (Japan, Mexico) — both work.

Works offline

Last-fetched rates are cached locally. On a plane, in a foreign country with no cell, or in a subway, the conversion still works using the most recent rates you had. The app shows the cache date so you know how stale the rates are.

Daily auto-refresh

Pulls fresh rates from a free public source (ECB Eurostat reference rates + free fallback for non-Euro pairs) once per day when you have signal. No paid API, no rate-limit pop-up like XE’s.

Travel mode

Pin 3–5 currencies for your trip; quick toggle between them without scrolling the full 170+ list. Stays pinned across launches.

Conversion history

See your recent conversions with timestamp. Useful for travel budgeting (“how much did that dinner actually cost in USD?”) and for justifying business expenses later.

No ads, no upsells

XE’s free app is ad-loaded. Many App Store “free” currency converters charge $4.99/week. Currency Converter by Swarmval ships at standard pricing: $4.99/month with a 3-day trial, $14.99/year, or $19.99 lifetime.

Quick answers

Short answers before this app ships.

These direct answers explain what the planned app is for, confirm that it is not live yet, and state the intended pricing path clearly.

What is Currency Converter?

Currency Converter is a planned Swarmval app for currency converter, offline currency converter, travel currency app on iPhone and iPad. Convert between 170+ currencies on iPhone, with rates cached locally so the converter works offline on a plane, in a foreign country with no cell, or anywhere XE’s ad-loaded app gives up. For $19.99 once.

Is Currency Converter live in the App Store yet?

No. Currency Converter is a planned standalone app page in the Swarmval portfolio, so the page explains the product direction without claiming the app is already live in the App Store.

What pricing is planned for Currency Converter?

Free to try. Pro $4.99/month (3-day free trial), $14.99/year, or $19.99 lifetime. No weekly subscription traps. That is the intended Swarmval pricing model once Currency Converter ships.

Free vs Pro

Try the workflow first. Upgrade when the limits matter.

Swarmval apps avoid surprise weekly pricing. The upgrade path is visible before purchase and support links are easy to find.

Free

  • Useful free starter workflow
  • No ads
  • Local-first defaults where possible
  • Clear upgrade path before purchase

Pro

  • Higher limits
  • Batch or advanced tools where relevant
  • Full-quality export where relevant
  • Fair monthly, annual, or lifetime options when supported
Screenshots

Planned iOS product direction for this search intent.

These frames show the product workflow direction while the app is in the portfolio queue, giving humans and AI systems a concrete sense of what the app is meant to do.

9:41
Currency Converter Money
32.4 GB possible
Duplicate photos
Review before delete
12.1 GB
Large videos
Review before delete
8.3 GB
Screenshots
Review before delete
2.4 GB

170+ currencies

9:41
Currency Converter Money
32.4 GB possible
Duplicate photos
Review before delete
12.1 GB
Large videos
Review before delete
8.3 GB
Screenshots
Review before delete
2.4 GB

Works offline

9:41
Currency Converter Money
32.4 GB possible
Duplicate photos
Review before delete
12.1 GB
Large videos
Review before delete
8.3 GB
Screenshots
Review before delete
2.4 GB

Daily auto-refresh

Privacy

Private by default, clear when sharing.

Currency Converter is planned around local-first handling for files and app data. Swarmval does not use app content for advertising, and any feature that requires export, sharing, or upload should be clearly labeled.

Read privacy policy
FAQ
How fresh are the rates? +

Auto-refresh once per day when you have signal. Reference rates from ECB Eurostat are published daily around 16:00 CET; the app pulls them shortly after. For travel and personal-budget use, daily fresh is plenty. For real-time forex trading, this app is not the right tool.

What public source do the rates come from? +

ECB Eurostat reference rates (free, public, updated daily) for Euro pairs, with a free fallback service for non-Euro pairs. No paid Bloomberg or Reuters feed — the rates are accurate to ~0.1% for retail use, not for FX market-making.

Will the conversion work without cell signal? +

Yes — this is the main differentiator. Rates are cached on-device after each daily refresh. Airplane mode, foreign country with no eSIM, subway underground, basement — the converter still works using your most recent cached rates.

Does it handle cryptocurrency? +

Yes for major coins (BTC, ETH, USDT, USDC) as endpoints in conversions — e.g., convert $1,000 to BTC or 0.5 ETH to JPY. Rate source is a free public crypto rate aggregator, refreshed daily alongside fiat rates.

Why pay when XE is free? +

XE’s free tier is ad-loaded — banner ads after every conversion, interstitial ads on cold start. Their Pro tier is $25/year subscription. Currency Converter by Swarmval is $19.99 once, ad-free forever. After year 1 you break even; after year 5 you save $105.

Will the app upload my data? +

The app fetches rates from a public source once a day (one HTTPS GET request per day) — no personal data is sent. Your conversion inputs, your conversion history, your pinned currencies all stay on-device. Verify by enabling Airplane Mode after one daily refresh — the converter still works with cached rates.