Comparison

GMX vs CHECK

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

Head to head
About

GMX

Manage your email, cloud storage, and news in one convenient app. Features a smart inbox that automatically categorizes emails for better organization and a secure cloud for file backup and sharing. Enjoy customizable push notifications and PIN protection for enhanced security.

Highlights
  • Smart Inbox for automatic email categorization
  • Secure cloud storage for file backup and sharing
  • Customizable push notifications
  • PIN protection for secure access
  • Support for multiple GMX mail accounts
  • Battery-saving email push service
Features
Read full description

Simple, secure, and up to date With the official GMX Mail app, you have access to your emails and files* anytime. Intuitive and secure Your inbox is clearly organized into categories, filters unwanted newsletters, and neatly displays online orders and parcel tracking (e.g., Deutsche Post, DHL). In the integrated cloud, you can easily store and share your files and photos. Protected by trusted GMX security standards. You’ll also receive up-to-date news from around the world. ------------------------------------------------ GMX FreeMail at a glance: EMAIL - Send and receive encrypted emails - Smart inbox: Automatic inbox sorting (orders, newsletters, social media) - Optional: AI-generated subject suggestions - Add multiple GMX accounts - Parcel tracking and shipment details directly in your inbox (e.g., DHL, Deutsche Post, DPD, GLS) - Mail notification: Know which letters are on their way—free of charge via email, in cooperation with Deutsche Post - Sync contacts and calendar - PIN protection and two-factor authentication - FreeMail or premium upgrades with additional storage and additional features PHOTOS & FILES* - Secure cloud storage for photos, videos, and documents - Automatic photo backup from your smartphone - Easily share files and photos via link NEWS (only available in German) - Personalized news overview (politics, knowledge, entertainment, sports, local news) - Optional push notifications for breaking news ------------------------------------------------ ABOUT GMX GMX is one of Europe’s leading email providers—with over 25 years of experience. Millions of users trust in strong European data protection and top-level security for their emails and data. → Discover the GMX app now and secure your preferred @gmx.net address! ------------------------------------------------ Terms of Use: https://www.gmx.co.uk/company/terms/ Privacy Policy: https://www.gmx.co.uk/company/privacypolicy/ * The cloud service will only be available through a paid Cloud Upgrade in Austria from October 7th 2026.

About

CHECK

Verify new Austrian passports and ID cards with this app. It guides you through checking QR codes and physical security features step-by-step, ensuring secure local verification without retrieving personal data.

Highlights
  • Verify new Austrian passports and ID cards
  • QR code verification
  • Step-by-step security feature guidance
  • Local verification without internet data retrieval
  • Securely checks digital and physical features
Read full description

The CHECK-AT app is your digital companion for an easy verification of the new Austrian passport and ID card. With the app, check the QR code and other security features on the new passport generation easily and securely. Simple verification - without any need for technical expertise: In addition to the convenient QR code check, the CHECK-AT app guides you step by step through verifying individual security features on the new Austrian passport and ID card. Using examples, the CHECK-AT app allows you to thoroughly examine the digital and physical security features of the new passport generation and ID card – even without any special expertise. Local verification without retrieving personal data from the internet: During the QR code check, the information contained in the QR code is only displayed on the verifying device. The relevant information is directly included in the QR code and is not retrieved from a database. The app connects to the internet during the startup process to check the availability of new certificates necessary for the correct and secure verification of the QR code. If new certificates are available, the app automatically downloads them to the device in use. Furthermore, the app does not connect to the internet at any other time. No personal data is retrieved from the internet or uploaded to the internet.

Screenshots

GMX4 screens
CHECK4 screens

Verdict

The call

The clearest difference is review sentiment: GMX at 77% against CHECK's 20%. GMX also leads on rating (4.7 vs 2.4) and update cadence (fortnightly vs every 3 months). CHECK's advantage is in-app purchases (none vs 19) 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. GMX sells 12 in-app purchases, starting at $0.99 per month. CHECK asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

GMX holds the better App Store score, 4.7 against 2.4. That said, the two scores are not equally well evidenced: GMX has 17K ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 77% of GMX's written reviews are positive against 20% of CHECK's.

UpkeepUpdate frequency

GMX ships an update fortnightly, CHECK every 3 months. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

Scorecard8 real differences · 2 level
GMX versus CHECK: the parameters behind the verdict, then further details
ParameterGMXCHECK
PriceFreeFree
Rating4.7 (17K ratings) — better2.4 (5 ratings)
Positive reviews76.8% of reviews — better20.0% of reviews
Number of ratings17K — better5
Update frequencyFortnightly — betterEvery 3 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad — betteriPhone
Requires iOS18.016.0 — better
Further details — not scored
Size373 MB65 MB
Age rating4+4+
Developer1&1 Mail & Media GmbHBundesministerium fuer Inneres

Customer experience

GMX

All ratings17,231 ratings
Positive92.0%
Neutral3.6%
Negative4.5%
Written reviews1,680 reviews
Positive76.8%
Neutral3.7%
Negative19.5%

CHECK

All ratings4 ratings
Positive25.0%
Neutral0.0%
Negative75.0%
Written reviews10 reviews
Positive20.0%
Neutral0.0%
Negative80.0%

Bugs and requests

GMX

Reported bugs

3 issues
  • Frequent sign-outs
  • Inconsistent sync between devices
  • Inability to access certain folders

Requested features

5 requests
  • Customizable font sizes
  • Dark mode option
  • Improved spam filtering
  • Better integration with other apps
  • Ability to schedule emails

CHECK

Not enough reviews yet to summarise bugs or requests.

In-app purchases

12 purchases

GMX

Subscriptions12
  • Cloud 30 GB3 variants$0.991 Month
  • TrackFree$1.491 Month
  • adfree App$1.991 Month
Show 9 more
  • Cloud 100 GB$1.991 Month
  • Cloud 150 GB3 variants$2.491 Month
  • Cloud 250 GB2 variants$3.491 Month
  • GMX ProMail2 variants$3.991 Month
  • GMX ProMail2 variants$4.491 Month
  • GMX TopMail$6.991 Month
  • AdFree$22.901 Year
  • GMX ProMail$49.991 Year
  • GMX TopMail$69.991 Year
None

CHECK

No in-app purchases

Questions

Is GMX free?
GMX is free to download, with in-app purchases available.
Is CHECK free?
CHECK is free to download, with no in-app purchases.
Which has better reviews, GMX or CHECK?
GMX is rated higher. GMX averages 4.7 out of 5 from 17K ratings, while CHECK averages 2.4 from 5 ratings.
Do GMX or CHECK have ads?
GMX shows ads; CHECK does not.
Which is updated more often, GMX or CHECK?
GMX ships an update fortnightly, and CHECK every 3 months. Most recently, GMX was updated on October 30, 2026 and CHECK on October 24, 2026.

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