Comparison

LinknLink vs NFA Stamp Collector

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

LinknLink

This app enables seamless interaction and interconnection between smart hardware devices via your mobile phone. It offers features like customized smart scenes, intelligent linkage, and time-based automation for a connected lifestyle.

Highlights
  • Customized smart scenes
  • Intelligent linkage
  • Time plan settings
  • Account sharing
  • Hierarchical management
  • Multi-language support
Features
Read full description

LinknLink is more than a smart home control app. Powered by a built-in AI Agent, it brings 1,500+ device brands, Home Assistant, and everyday lifestyle services into one unified experience. Control devices, create automations, manage your home, and get help using natural language. LinknLink works with Alexa, Google Home, Apple Home, Matter, SmartThings, and other major smart home platforms. KEY FEATURES 1. Control 1,500+ Device Brands Manage lights, air conditioners, curtains, locks, sensors, cameras, and more across different brands, protocols, and ecosystems — all from one app. • 20+ popular brands can be added directly without an extra gateway • More third-party brands can be connected through HomeClaw • No Home Assistant knowledge is required 2. Built-in AI Agent Simply tell LinknLink what you want to do. The built-in AI Agent can help you: • Control devices • Create scenes and automations • Schedule tasks • Answer setup and usage questions • Diagnose device and system issues • Assist with general everyday tasks No separate AI service or complicated setup is required. 3. Create Automations with Natural Language Forget complex rule builders. Just say: “Turn off the living room lights and lower the AC at 10 PM every night.” LinknLink understands your intent and creates the corresponding scene, schedule, or automation automatically. 4. Fast Local Control and Free Remote Access Connected devices can be controlled locally for faster and more reliable response. You can also access and manage your home remotely without an additional subscription. • Third-party devices require HomeClaw for free remote access 5. A Home That Learns Your Routine LinknLink can gradually understand your habits, preferences, and daily routines, then suggest useful automations to make your home more comfortable, efficient, and responsive. 6. Clean and Customizable Interface The modern card-based interface makes devices, rooms, and functions easy to understand and control. Customize card layouts and room styles to create an experience that fits your home. 7. Native Home Assistant Integration Connect LinknLink to your Home Assistant instance and import existing devices without adding them again. Home Assistant users can enjoy simpler mobile control, remote access, and AI Agent features. • Devices in Home Assistant on HomeClaw can support free remote access after being imported into LinknLink 8. Bridge Devices Across Platforms Bridge connected devices, including devices imported from Home Assistant, to Matter, Apple Home, or Samsung SmartThings. Continue controlling and automating them in the ecosystem you already use. 9. More Than Smart Home Control LinknLink also supports useful lifestyle services, including sports updates, radio, shopping lists, and more. It is not only a smart home app, but an AI assistant designed around everyday home life. 10. Built for the Connected Future Future support for CarPlay will help connect your car, phone, and home. Prepare lights, curtains, and air conditioning before you arrive, making every return home more comfortable. Bring your devices, automations, platforms, and everyday services together with LinknLink — one app for a smarter, simpler, and more connected home. 11.Terms of Use (EULA):https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ 12. Service Agreement: https://app-service-chn-566c4736.linklinkiot.com/appfront/v1/webui/app-h5-subscribe_agreement_linklink-1036/ Privacy Policy:https://app-service-chn-566c4736.linklinkiot.com/appfront/v1/webui/app-h5-privacy_policy_linklink-1675/

About

NFA Stamp Collector

Features
Read full description

NFA Stamp Collector is a private, on-device wallet for your National Firearms Act paperwork. Scan your approved ATF forms once and stop digging through folders, photos, and PDFs every time you need a serial number or an approval date. Your data is yours — no account, no developer cloud, no subscription — and a one-time purchase when you're ready for the full toolkit. GET STARTED IN SECONDS • A short setup walks you through the privacy promise, an optional Face ID lock, and your first owner (you, a trust, or a corporation) — skip anything you're not ready for. • Curious first? Tap "Explore with sample data" on an empty Vault to see the app populated with clearly labeled demo records, removable with one tap. SCAN YOUR STAMPS • Point your camera at an approved Form 1, Form 4, or a returned 5320.20 approval — or import a PDF. The app reads the make, model, serial number, and approval date for you. • You confirm the critical fields — serials and dates — before anything is saved, so a misread is a one-tap fix, not a buried error. • Prefer not to scan? Enter an item by hand in the same amount of time. • Store the scanned form image and your own photos of the item right alongside the entry. A WALLET BUILT FOR NFA OWNERS • A clean roster of every item — make, model, serial, and owning entity at a glance, with a "needs attention" band up top for transport approvals that are expiring or trips coming up without one. • Serial numbers are encrypted on your device and can be hidden behind Face ID. • Organize by individual, corporation, or trust — including single-shot trusts named after each item. TRANSPORT (5320.20) TRACKING • Track an interstate-transport application from filing through approval, by state, with countdown rings for what's active or expiring — approval is federal; always verify destination-state law. • One 5320.20 filing covers up to three firearms — generate a pre-filled PDF, then scan the returned approval to update the permit automatically. • Get reminders at 30, 7, and 1 day before a permit lapses — with privacy-safe notifications that never show item details on your lock screen. ESTATE PLANNING, ORGANIZED • The Legacy Binder helps you record who inherits what, then exports a single password-protected PDF estate packet — a summary plus pre-filled Form 5s — that opens in any PDF reader, for you or your executor. It's not legal advice — an organizational tool for your estate's executors. PRIVATE BY DESIGN • No user accounts. No analytics. No trackers. No ads. • The app makes zero network calls — not "only sends what's necessary," none at all. Try it in Airplane Mode. • Your serials, documents, and photos are encrypted on your device, with keys held in the Secure Enclave — they stay ciphertext even inside your phone's backups. • Set an optional recovery passphrase — with it, a new phone restores your records from a device backup. • Location metadata is stripped from every imported photo. • Deleting an item removes it from the app's storage — its documents, photos, and encrypted serial are removed. • Optional encrypted backup you carry yourself — protected by a passphrase only you know. FREE TO START Free includes full scanning on up to 2 items, 1 active transport permit, and basic maintenance logging. Scanning is never limited. STAMP COLLECTOR PRO — ONE-TIME PURCHASE Unlock unlimited items and transport permits, 5320.20 & Form 5 PDF generation, returned-approval scanning, encrypted backup & restore, the Legacy Binder, and cleaning-interval reminders. Buy once — it's yours on every device signed in to your Apple ID. No subscription, ever. IMPORTANT NFA Stamp Collector is a personal record-keeping and organization tool. It does not sell, transfer, or facilitate the acquisition of any firearm or regulated item, and it does not submit anything to any agency. Generated forms are for your own records — review them with an attorney before signing or filing.

Screenshots

LinknLink4 screens
NFA Stamp Collector4 screens

Verdict

The call

The clearest difference is update cadence: NFA Stamp Collector at daily against LinknLink's every 2 weeks. LinknLink's advantage is device support (3 vs 1) and iOS requirement (15.5 vs 17.0). On price, ads and in-app purchases 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

Both are free to download. LinknLink sells 10 in-app purchases, starting at $0.99 per year and NFA Stamp Collector sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

LinknLink ships an update every 2 weeks, NFA Stamp Collector daily. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
LinknLink versus NFA Stamp Collector: the parameters behind the verdict, then further details
ParameterLinknLinkNFA Stamp Collector
PriceFreeFree
Rating3.1 (51 ratings) — better—
Positive reviews42.3% of reviews—
Number of ratings51 — better—
Update frequencyEvery 2 weeksDaily — better
AdsNoNo
In-app purchasesYesYes
MonetizationSubscription—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.5 — better17.0
Further details — not scored
Size286 MB22 MB
Age rating9+4+
DeveloperHangzhou LinkLink Technology Co., Ltd.Prodigal Panda LLC

Bugs and requests

LinknLink

Reported bugs

23 issues
  • Cannot complete account setup/home location
  • Firmware updates broke device functionality
  • App crashes when selecting county location
  • App crashes when clicking on any device
  • App stops working/controlling devices
Show 18 more
  • Servers are often down
  • Login issues
  • Registration process fails
  • Setup process is difficult and error-prone
  • Bug with Home Assistant firmware
  • Sensor detection range decreased after firmware update
  • Custom notification sound not possible
  • Submenus displayed in Chinese
  • Temperature gauge locked to Celsius
  • Sensors added via app don't show up on gateway
  • Devices stop reading sensors at random times
  • Gateway turns off randomly
  • Devices intermittently disconnect from WiFi
  • EHub sensitivity too high
  • IR controller features do not work
  • Repetitive notifications sent
  • Product reboots constantly
  • App broken with iOS 18 update

Requested features

5 requests
  • Ability to edit button icons and titles
  • Add custom notification sound
  • Add sensitivity adjustment for eHub
  • Improve location options for smaller cities
  • Fix IR controller features

NFA Stamp Collector

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

LinknLink

Subscriptions10
  • 1 Screen$0.991 Year
  • 2 Screen$1.991 Year
  • ISG Monthly$1.991 Month
Show 7 more
  • 3 Screen$2.991 Year
  • 4 Screen$3.991 Year
  • 5 Screen$4.991 Year
  • 500MB$19.991 Year
  • ISG Year$19.991 Year
  • 1GB$29.991 Year
  • 3GB$59.991 Year
1 purchases

NFA Stamp Collector

One-time1
  • Stamp Collector Pro$19.99

Questions

Is LinknLink free?
LinknLink is free to download, with in-app purchases available.
Is NFA Stamp Collector free?
NFA Stamp Collector is free to download, with in-app purchases available.
Do LinknLink or NFA Stamp Collector have ads?
Neither LinknLink nor NFA Stamp Collector shows ads.
Which is updated more often, LinknLink or NFA Stamp Collector?
LinknLink ships an update every 2 weeks, and NFA Stamp Collector daily. Most recently, LinknLink was updated on November 3, 2026 and NFA Stamp Collector on October 31, 2026.

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