Smart NFC vs WatchKey IoT
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Smart NFC
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Put website links, text or Wi-Fi details on compatible NFC tags. Smart NFC helps you read tags, check capacity before writing and reuse saved templates. Key features β’ Fast NFC tag reading β’ Write URL, text, Wi-Fi, phone, SMS, location, and custom data β’ Check capacity and byte size before writing β’ View tag status: writable, locked, and capacity β’ History for read and created tags β’ Save and reuse tag templates β’ Customize tags with colors, emoji, and SF Symbols Tag support varies by device and record type. Writing Wi-Fi details does not guarantee automatic connection. Lifetime Access Try NFC reading and writing free. Lifetime Access unlocks unlimited reading and writing, advanced tag types, history, templates, and customization with a one-time purchase. No subscriptions. No ads.
WatchKey IoT
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YOUR DEVICES. ONE DASHBOARD. WatchKey IoT brings your devices, services and data together β on iPhone, iPad and Apple Watch. Monitor your home, energy system or IoT projects, control devices from different ecosystems, and build dashboards around what matters to you. From a light switch or garage door to energy monitoring, climate control and live cameras: WatchKey puts them in one place. BUILD DASHBOARDS YOUR WAY Create pages for your home, energy system, workshop, garden, server room or your own IoT projects. Add the controls you need and choose how they look and behave. Combine buttons, switches, live values, gauges, status indicators, actions and compatible video streams. Start with a ready-made layout where available, then change anything you want. BRING DIFFERENT SYSTEMS TOGETHER WatchKey isnβt tied to a single smart-home or IoT ecosystem. Data from different connections can be organized into groups and used together on the same dashboard. Currently supported: β’ Blynk β’ HomeWizard Local API β’ Intesis AC Cloud β’ REST APIs β’ MQTT YOUR CONTROLS. ON YOUR WRIST. Build dedicated Apple Watch pages from the iPhone configurator and preview them before saving. Check live information, change settings or trigger actions without reaching for your phone. Watch face complications provide quick access to WatchKey, a page or an individual control. Open the garage. Check solar power. Change the air conditioning. Glance at a sensor. ORGANIZED BEHIND THE DASHBOARD As your setup grows, WatchKey keeps connections, controls and devices separate. Group controls by room, location or device. Supported integrations can discover devices and create structured groups automatically. Reusable layouts make it quick to place a complete device on a page while still leaving every control customizable. CONFIGURE ON IPHONE. USE EVERYWHERE. Configure connections, controls, groups and layouts visually on iPhone, then use your dashboards on iPhone, iPad and Apple Watch. The same underlying control can appear differently wherever you use it, so each page can be optimized for its purpose and screen size. TRY IT FOR FREE The free version isnβt just a demo. Build a real working setup with: β’ 1 connection β’ 4 controls β’ 1 iPhone/iPad page β’ 1 Apple Watch page A separate built-in demo with virtual devices lets you explore WatchKey before connecting anything of your own. ONE PURCHASE. NO SUBSCRIPTION. Need more? WatchKey Premium removes the free-version limits with a single lifetime purchase. No subscription. No recurring fee. YOUR SETUP STAYS YOURS WatchKey IoT doesnβt require a WatchKey account. Where an integration supports local access, WatchKey can communicate directly with devices on your network. Your dashboards and configuration arenβt dependent on a WatchKey cloud service. One place for the devices that matter to you.β¨On your phone. On your tablet. On your wrist. Connect what you have. Organize it your way. Control it where you need it. The Apple Standard Terms of Use (EULA) are available at: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is device support: WatchKey IoT at 3 against Smart NFC's 1. On price, ads, in-app purchases and iOS requirement there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Smart NFC sells 1 one-off in-app purchase and WatchKey IoT sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
| Parameter | Smart NFC | WatchKey IoT |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | β |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone | iPhone, iPad, Apple Watch β better |
| Requires iOS | 17.0 β better | 17.6 |
| Further details β not scored | ||
| Size | 51 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Remi Herbiet | Stefaan Peter Degroote |
In-app purchases
Smart NFC
- NFC Pro$19.99
WatchKey IoT
- Premium Lifetime$6.99









