FRB FlatrateBooster vs CallEazy
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
FRB FlatrateBooster
Make ultra-low-cost international calls and save on calls to German mobile numbers. This app routes calls via landline or freephone numbers, offering up to 99% savings. It provides cost control, uses your existing contacts, and ensures superb voice quality without internet calls.
- Ultra low-priced international calls
- Savings on German mobile numbers
- Routes calls via landline/freephone
- Up to 99% savings
- 1 EUR free credit for trial
- No monthly fees or subscriptions
- Superb voice quality
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!!! INTERNATIONAL CALLS STARTING AT 1,9 CENTS !!! FlatrateBooster is the free app to make ultra low priced international calls from any mobile. FlatrateBooster automatically routes calls to predefined destinations via a landline or freephone phone number. PLEASE NOTE: Use FlatrateBooster in combination with a provider flat rate for landline numbers for making international calls and save a lot of money! When using FlatrateBooster for calling German mobiles we strongly recommend to use FlatrateBooster only in combination with a flat rate from your provider to German landline numbers. WHY FLATRATEBOOSTER? FlatrateBooster is for everyone who wants to save on calls to other mobile providers or to international destinations! Use FlatrateBooster for these calls and save a lot of money! UP TO 99% SAVINGS: You can make ultra cheap international calls for 1,9 cent/min or save on German mobile numbers for 8,9 cents/min. Check our price list a complete list of our termination charges at our website. 8,9 CENTS/MIN TO ALL GERMAN MOBILE PROVIDERS: Don't worry about high costs to other mobile providers. Choose yourself for which destinations you want to use FlatrateBooster and start making calls to German mobiles for 8,9 cents/min! 1 EUR FREE CREDIT = 50 FREE MINUTES: You will receive 1 EUR free credit to try out FlatrateBooster without any commitments attached. You can call more than 50 minutes for free to USA, Australia, European landlines or many other countries. FLATRATEBOOSTER AS AN ADD-ON SERVICE: Keep your SIM card and your mobile number. COMPLETE COST CONTROL: Credit and price announcement. Prepaid account. You just pay for your calls. NO monthly fee, NO subscription, NO minimum consumption, NO hidden costs! USE YOUR EXISTING CONTACT LIST: No need for another buddylist. Just dial from your telephone address book or dialpad. SUPERB VOICE QUALITY: No calls via internet. No VoIP. FLAT RATE TO LANDLINE NUMBERS: The call to the destination is routed through a landline or freephone number. Using a flat rate to landline numbers there are not extra-costs charged by your provider. Use FlatrateBooster for calls to international destinations and to German mobile networks and save a lot of money! For making calls to German mobiles we strongly recommend a flat rate to German landline numbers. Please note: A slow internet connection may cause a delayed call establishment. FUTURE FEATURES: Free calls to other FlatrateBooster users! FlatrateBooster is free and without any in-app advertising. You just pay as you go for calls. Try out FlatrateBooster for free and even get 1 EUR free credit. If you have any questions please contact our support team. Tel: +49 (0) 221 999 999 39 (weekdays, 10 am to 6 pm) E-mail: support@fr-b.de Your can find our fair GTC and privacy policy on our website.
CallEazy
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Connect Globally with CallEazy - Your All-in-One Communication Solution. CallEazy empowers businesses and travelers to connect with the world instantly. Access global data with eSIMs, establish a local presence with international numbers, and manage powerful SMS tools in one secure, intuitive app. Key Features: Global eSIM Data and Roaming Stay online wherever you go. Browse and purchase affordable data packages for over 100 countries instantly. Monitor your data usage in real time and top up anytime without expensive roaming fees or physical SIM cards. International Numbers Purchase and manage phone numbers from the USA, UK, and other global destinations. Establish a local presence anywhere without leaving your home or office. VoIP and Conference Calling Make and receive high quality voice calls over the internet. Organize seamless conference calls to stay connected with your team and clients worldwide. Advanced Messaging and A2P Campaigns Send and receive SMS globally. Run A2P messaging campaigns to reach customers effectively. Manage brand compliance and trusted communication with ease. Secure Mobile Wallet Top up your balance securely using the integrated wallet. Track spending, manage payments, and maintain credits for calls and data. Compliance and Security Built in tools help meet regulatory requirements including address verification and brand registration. User Friendly Design Modern interface with intuitive navigation and quick access to all communication tools. Download CallEazy today and stay connected worldwide.
Screenshots
Verdict
The clearest difference is ads: FRB FlatrateBooster at none against CallEazy's shown. CallEazy's advantage is update cadence (every 3 days vs monthly) and iOS requirement (13.0 vs 15.5). On price, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
FRB FlatrateBooster ships an update monthly, CallEazy every 3 days. The most recent releases landed on November 1, 2026 and November 9, 2026 respectively.
| Parameter | FRB FlatrateBooster | CallEazy |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | โ |
| Update frequency | Monthly | Every 3 days โ better |
| Ads | No โ better | Yes |
| In-app purchases | No | No |
| Monetization | Free | โ |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.5 | 13.0 โ better |
| Further details โ not scored | ||
| Size | 10 MB | 75 MB |
| Age rating | 4+ | 4+ |
| Developer | DALASON GmbH | Createch Agency |
In-app purchases
FRB FlatrateBooster
No in-app purchases
CallEazy
No in-app purchases
Questions
Is FRB FlatrateBooster free?
Is CallEazy free?
Do FRB FlatrateBooster or CallEazy have ads?
Which is updated more often, FRB FlatrateBooster or CallEazy?
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