Currency Exchange Offline vs Signl
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Currency Exchange Offline
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Currency Exchange Offline is a practical converter for travel, shopping, and quick checks without depending on a live connection. Enter an amount, choose currencies, and get the conversion from saved rates. Refresh European Central Bank rates when you choose, with one successful update per day. Use favorites for common pairs, compare results across several currencies, search the rate table, and calculate with history. The Android widget can show your top favorite rate. Preferences and saved rates stay on your device. Rates are based on ECB reference data. When a direct pair is not provided, the app converts through EUR so pairs such as USD to JPY work from the same rate table. A bundled default file is included for first launch and recovery, and your saved download is used after you refresh. Daily use stays quick: mark pairs as favorites, keep extra target currencies for comparison, search the full rate table, check inverse rates, copy a converted result, and open the built in calculator when an amount needs more than a simple conversion. Calculator history keeps recent calculations with their converted result. Settings let you choose the app language or follow the system language. There is no account and no analytics. Your favorites, history, language choice, and saved rates stay on the device. Rate downloads happen only when you press update, and the app limits successful downloads to once per day.
Signl
Visualize your home Wi-Fi signal strength in 3D using your phone's camera or imported floor plans. Identify dead zones and optimize router placement for a flawless connection throughout your home.
- 3D Wi-Fi signal visualization
- LiDAR room scanning
- Floor plan import (photo/PDF)
- Wi-Fi coverage mapping
- Network diagnostics
- Router/extender placement optimization
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See your WiFi painted onto a 3D map of your own home. Walk through your rooms with your iPhone. Signl measures the real signal in each one and shows you exactly where it drops, and where to move your router to fix it. WHAT YOU GET - 3D scan: walk through your home and watch the model build itself. LiDAR is used on iPhones that have it. - No LiDAR? Import a floor plan. Drop in a photo or a PDF and Signl reads the rooms. - Coverage map: every room measured and scored, weak spots marked where they actually are. - Live test: real speed and latency, measured from where you stand. Other apps give you a number. Signl gives you a place. Each measurement sits on the room it was taken in, so you know which wall is in the way and where the router belongs. YOUR SCANS STAY ON YOUR IPHONE The 3D model of your home never leaves your device. Nothing is stored on our servers. Floor plan photos are analyzed, then discarded. FREE AND PRO Scanning your home and building the 3D model are free. Signl Pro unlocks the full coverage heatmap, scores for every room, router placement recommendations and shareable reports. Signl Pro auto-renewable subscriptions: Yearly ($34.99/year) or Weekly ($5.99/week). A Lifetime purchase is also available. Payment will be charged to your Apple Account at confirmation of purchase. Your subscription automatically renews unless it is canceled at least 24 hours before the end of the current period. You can manage or cancel your subscription in your App Store account settings at any time. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://signlwifi.com/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: Currency Exchange Offline at none against Signl's 3. Currency Exchange Offline also leads on iOS requirement (16.0 vs 18.0). Signl's advantage is ads (none vs shown) and update cadence (weekly vs every 2 months). On price 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
Both are free to download. Signl sells 3 in-app purchases, starting at $6.99 per 7 days. Currency Exchange Offline asks for nothing beyond the download.
Currency Exchange Offline ships an update every 2 months, Signl weekly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.
| Parameter | Currency Exchange Offline | Signl |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.0 (7 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 7 — better |
| Update frequency | Every 2 months | Weekly — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 26 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Jose Gerardo Palma Duran | Victor Backouche |
In-app purchases
Currency Exchange Offline
No in-app purchases
Signl
- Signl Pro — Weekly$6.997 Days
- Signl Pro — Yearly$29.991 Year
- Signl Pro Lifetime$34.99
Questions
Is Currency Exchange Offline free?
Is Signl free?
Do Currency Exchange Offline or Signl have ads?
Which is updated more often, Currency Exchange Offline or Signl?
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