Comparison

AC400 vs 2FA QR Authenticator

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

Head to head
About

AC400

Remotely manage your air conditioner's temperature from anywhere using a mobile app. Schedule daily or weekly programs, utilize location-based temperature adjustments, and view historical data. Control multiple homes and share access with family members.

Highlights
  • Remote AC temperature control
  • Daily/weekly scheduling
  • Location-based temperature adjustment
  • Historical temperature reports
  • Weather forecast integration
  • Multi-home control
  • Family sharing
Features
Read full description

WHAT IS SMART AC (AIR CONDITIONER) CONTROL KIT? Smart AC Control Kit is the device which allows a user to control the temperature of air conditioner via Mobile Application by the internet even if you are not at home. HOW DOES SMART AC CONTROLLER WORKS? The AC 400 Smart AC Controller helps your room stay at the set temperature by communicating infrared with your air conditioner. WHAT ARE THE ADVANTAGES OF SMART AC CONTROLLER? -Control your home temperature, wherever you are in the World by Mobile App. -Create daily or weekly programs easily by Smart AC Controller App. -Using Location Mode reduces/increases the temperature of your home when you move away/approach. -Depending on the range selected from the Smart AC Control Kit’s Mobile App, you can get a historical report, the temperature of your home and the outside air temperature. -With the App, you are able to check weather forecast which helps you to set home temperature. -You can add more than one home to your app and can control all with one App. -You can invite your family member to app and share control of your home.

About

2FA QR Authenticator

Secure your online accounts with bank-level two-factor authentication codes. This app offers offline code generation, a fast QR scanner for setup, and robust encryption. It prioritizes user privacy with no tracking or ads, and offers optional iCloud sync for seamless cross-device access.

Highlights
  • Two-factor authentication (2FA, TOTP, OTP)
  • Offline code generation
  • Fast QR code scanner
  • Bank-grade AES-256 encryption
  • iCloud backup & sync
  • Password-protected folders
  • Face ID / Touch ID & PIN protection
Features
Read full description

The easy and secure authenticator app for all your accounts — Google, Facebook, Instagram, Amazon, Microsoft, GitHub, Discord, Binance, Coinbase, and more. Protect your logins with bank-level 2FA codes (TOTP) and stop worrying about privacy. Unlike other authenticators, we never track, store, or send your personal data. Your codes stay 100% offline, on your device. And the best part? Setup takes just seconds — simply scan a QR code or enter your key manually. No registration, no email, no hassle. Core Security Features • Two-factor authentication (2FA, TOTP, OTP) for all major services • Works instantly with Google, Microsoft, Facebook, Instagram, Amazon, Discord, Steam, and more • Crypto protection — secure your Binance, Coinbase, and Kraken accounts • Complete privacy — no ads, no tracking, no servers • Works offline — generate codes without internet • One-tap copy for faster logins • Face ID / Touch ID & PIN protection • AES-256 bank-grade encryption • Fast QR code scanner for instant setup • Dark and Light mode support • Home screen widgets for quick access Advanced Features • Unlimited authenticator accounts* • Password-protected folders for easy organization* • Seamless iCloud backup & sync across devices* • Export accounts for portability* (*Premium features via in-app purchase) Why Choose Us Unlike Google Authenticator, Authy, or Microsoft Authenticator, our app combines maximum security with simplicity. • No registration required • No complicated setup • Start protecting your accounts in under 10 seconds Your secrets are encrypted locally, and with iCloud sync, your data flows directly to your Apple account, never through external servers. How It Works 1. Scan a QR code or enter your key manually 2. Generate one-time codes instantly 3. Copy with a single tap 4. Organize with folders and custom names 5. Sync securely across all Apple devices Trusted Worldwide Join thousands of users — from security professionals to crypto traders — who switched to the authenticator that’s secure, private, and effortless to use. No ads. No analytics. No tracking. Just simple 2FA security that works. Download now and secure your accounts with the easiest authenticator alternative — private, reliable, and completely yours. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

AC4004 screens
2FA QR Authenticator4 screens

Verdict

The call

The clearest difference is review sentiment: 2FA QR Authenticator at 100% against AC400's 9%. 2FA QR Authenticator also leads on update cadence (every 2 weeks vs every 4 months). AC400's advantage is in-app purchases (none vs 3) and iOS requirement (12.0 vs 17.6). On price, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. 2FA QR Authenticator sells 3 in-app purchases, starting at $3.99 per month. AC400 asks for nothing beyond the download.

UpkeepUpdate frequency

AC400 ships an update every 4 months, 2FA QR Authenticator every 2 weeks. The most recent releases landed on October 15, 2026 and October 12, 2026 respectively.

Scorecard5 real differences · 5 level
AC400 versus 2FA QR Authenticator: the parameters behind the verdict, then further details
ParameterAC4002FA QR Authenticator
PriceFreeFree
Rating1.0 (1 ratings) — better—
Positive reviews9.1% of reviews100.0% of reviews — better
Number of ratings1 — better—
Update frequencyEvery 4 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad
Requires iOS12.0 — better17.6
Further details — not scored
Size70 MB86 MB
Age rating4+4+
DeveloperISIPARK IC VE DIS TICARET INSAAT ISITMA SISTEMLERI OTOMOTIV SANAYI ANONIM SIRKETIMikhail Andrewywvich Chekalin

Customer experience

AC400

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews11 reviews
Positive9.1%
Neutral9.1%
Negative81.8%

2FA QR Authenticator

Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

AC400

No in-app purchases

3 purchases

2FA QR Authenticator

Subscriptions2
  • Monthly Premium3 Days trial$3.991 Month
  • Annual Premium3 Days trial$14.991 Year
One-time1
  • Lifetime Premium$39.99

Questions

Is AC400 free?
AC400 is free to download, with no in-app purchases.
Is 2FA QR Authenticator free?
2FA QR Authenticator is free to download, with in-app purchases available.
Do AC400 or 2FA QR Authenticator have ads?
Neither AC400 nor 2FA QR Authenticator shows ads.
Which is updated more often, AC400 or 2FA QR Authenticator?
AC400 ships an update every 4 months, and 2FA QR Authenticator every 2 weeks. Most recently, AC400 was updated on October 15, 2026 and 2FA QR Authenticator on October 12, 2026.

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