GMX vs Shliff
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GMX
Manage your emails and files securely with this app. It offers smart inbox sorting, encrypted messaging, and cloud storage for photos and documents. Stay updated with personalized news and track parcels directly from your inbox.
- Encrypted email sending and receiving
- Smart inbox sorting by category
- Secure cloud storage for files and photos
- Automatic photo backup
- Parcel tracking integration
- Sync contacts and calendar
- PIN protection and two-factor authentication
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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.
Shliff
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Test your idea in 20 minutes, not three weeks. Speak it out loud and Shliff turns it into clear assumptions, research tasks and small tests that show whether real demand exists. You have an idea in your head but no time to sit down at a desk for hours? Capture it on the go, structure it, and find out early whether it holds up. HOW IT WORKS 1. Speak or type it — AI turns it into a clear title and description. 2. Branch and connect — your idea becomes a map you can actually read. 3. Surface the assumptions — AI shows what the idea really depends on. 4. Run the tests — small, guided checks with a deadline, a metric and a target. 5. See the result — passed, disproven, or deadline missed. FEATURES - Capture ideas instantly by voice or text - Turn rough notes into clear wording with AI - Build and branch your idea as a visual map - Generate matching research tasks automatically - Track assumptions with deadlines, targets and a counter - Offline dictation with Whisper or built-in speech recognition - No account required - Available as a subscription or a one-time lifetime purchase On the train, on a break, on a walk: Shliff works whenever you have a moment. For everyone who wants to test their ideas, not just collect them — before pouring in weeks of time and energy. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://shliff.app/datenschutz
Screenshots
Verdict
The clearest difference is ads: Shliff at none against GMX's shown. Shliff also leads on iOS requirement (15.0 vs 18.0). On price, update cadence, in-app purchases 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. GMX sells 7 in-app purchases, starting at $0.99 per month and Shliff sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.
| Parameter | GMX | Shliff |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (17K ratings) — better | — |
| Positive reviews | 76.8% of reviews | — |
| Number of ratings | 17K — better | — |
| Update frequency | Fortnightly | Fortnightly |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 374 MB | 122 MB |
| Age rating | 4+ | 4+ |
| Developer | 1&1 Mail & Media GmbH | Sanel Hasic |
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
Shliff
Not enough reviews yet to summarise bugs or requests.
In-app purchases
GMX
- Cloud 30 GB3 variants$0.991 Month
- TrackFree$1.491 Month
- adfree App$1.991 Month
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- Cloud 100 GB$1.991 Month
- GMX ProMail$3.991 Month
- GMX ProMail2 variants$4.491 Month
- GMX TopMail$6.991 Month
Shliff
- Shliff Pro$14.99









