Converter Pro vs WD3
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Converter Pro
This app provides a comprehensive tool for converting units and currencies. It offers over 3000 unit conversions across 19 categories and daily updated rates for over 150 world currencies. Customize the look with different skins and access past calculations.
- 3000+ unit conversions
- 150+ currency rates
- 19 conversion categories
- Daily currency rate updates
- Customizable skins and color schemes
- Tape View for recent equations
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Convert anything instantly - just type what you need. Converter Pro is a powerful all-in-one unit converter, calculator, and everyday toolkit built for speed, simplicity, and real life. Skip menus. Skip setup. Get answers in seconds. Unlike traditional converters, Converter Pro understands natural language — so you can type what you mean and get instant results. SMART CONVERSIONS - JUST TYPE & GO The fastest way to convert units, currencies, and real-world calculations. No menus. No setup. Just type and get the answer. Try it: • “10 USD to CAD” • “5’10 in cm” • “50 km/h to mph” • “tip 20% on 85 split 3” • “0.25 BTC CAD” • “how many oz in 2 cups” • “18 mpg over 80 km fuel usage” • “I own 0.01% of a company paying 5m dividend quarterly convert that to monthly income in CAD” * Understands natural language * Smart suggestions as you type * Handles math, mixed units, and real-world questions * Instant results — zero setup COMPLETE CONVERSION ENGINE Everything you need, in one place: • 29 unit categories • 180+ units • 800+ conversion paths • 166 currencies (live exchange rates) • 50 cryptocurrencies One app. Full coverage. EVERYDAY CONVERSIONS All your most-used conversions, ready instantly: Length, weight, volume, area, temperature, speed, time, currency, crypto. Supports both metric and imperial systems. REAL-WORLD TOOLS Built for real life - not just formulas: • Cooking & recipe conversions • Fuel economy (MPG, L/100km, km/L) • Data storage (KB → TB) • Internet speed (Mbps ↔ MB/s) SCIENCE & ENGINEERING UNITS Advanced precision when you need it: Energy, power, pressure, force, density, viscosity. ELECTRICAL SYSTEM Complete electrical conversions: Voltage, current, resistance, capacitance, inductance, conductance. SPECIALIZED CONVERSIONS Rare units most apps don’t support: Frequency, angle, magnetism, radiation dose, typography, radioactivity. BUILT-IN TOOLS (25+) More than a converter - a complete toolkit. Finance: • ROI calculator • Compound interest • Tip & bill splitter Health: • BMI calculator • Running pace • Blood glucose converter Everyday tools: • Recipe scaling • Oven temperature • Paper sizes • Time zone converter • Tire size calculator • Screen PPI calculator • Ohm’s law calculator …and more. BUILT-IN CALCULATOR Go beyond conversions: • Percentages • Unit math • Everyday problem solving WHY CONVERTER PRO? Because speed matters. Converter Pro brings conversion, calculation, and smart input together in one fast, intuitive app. With Converter Pro, you can: • Convert instantly using natural language • Solve real-world problems in seconds • Access advanced scientific and technical units • Use powerful built-in tools for daily life One app. Everything you need. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
WD3
This utility app allows users to remotely monitor and control smart door sensors. Receive instant push notifications when a door is opened, view its current status, and set up alarm calls for immediate alerts.
- Remote door sensor status monitoring
- Push notifications for door openings
- Configurable alarm phone calls
- Real-time door status display
- Parameter settings for door sensors
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WD3是一款智能门磁的APP,可以通过APP去设置门磁的状态和参数等,在门磁开关时会有推送消息告知用户某某门被打开, 可以显示当前门磁开关门状态并且可以设置报警电话,当门打开时电话通知用户某某门被打开了。
Screenshots
Verdict
The clearest difference is review sentiment: Converter Pro at 74% against WD3's 0%. Converter Pro also leads on rating (4.4 vs 1.0) and ratings volume (45 vs 4). WD3's advantage is in-app purchases (none vs 1) and ads (none vs shown). 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. Converter Pro sells 1 one-off in-app purchase. WD3 asks for nothing beyond the download.
Converter Pro holds the better App Store score, 4.4 against 1.0. That said, the two scores are not equally well evidenced: Converter Pro has 45 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 74% of Converter Pro's written reviews are positive against 0% of WD3's.
Converter Pro ships an update every 3 months, WD3 fortnightly. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.
| Parameter | Converter Pro | WD3 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (45 ratings) — better | 1.0 (4 ratings) |
| Positive reviews | 74.4% of reviews — better | 0.0% of reviews |
| Number of ratings | 45 — better | 4 |
| Update frequency | Every 3 months | Fortnightly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 18.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 43 MB | 94 MB |
| Age rating | 4+ | 4+ |
| Developer | Panoramic Software Inc. | 传林 方 |
Customer experience
Converter Pro
WD3
In-app purchases
Converter Pro
- Full Version$3.99
WD3
No in-app purchases









