WeePhone SIP vs FRB FlatrateBooster
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
WeePhone SIP
This powerful SIP softphone offers a flexible and robust calling experience with superb audio quality. It allows you to make calls over various networks and integrates with your existing contacts and SIP solutions, freeing you from traditional desk phones.
- Wideband G.722.1 codec
- Backgrounding support
- Calls over 3G/Edge and WiFi
- Bluetooth integration
- Call hold and swap
- Contact list integration
- STUN and SIP proxy support
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The hacker's SIP softphone is updated with a whole new UI and features. Free yourself from your stationary desk phone extension, or use the powerful SIP protocol to make calls for free, all with superb audio quality. WeePhone has the most flexible/powerful configuration of any SIP client out there, so it's compatible where others aren't. Features include: * G722.1 (wideband high-quality) codec * Backgrounding * Calls over 3g/Edge and WiFi * Bluetooth support * Call hold/swap (juggle 2 calls) * Use your existing contacts list * Audio Codecs include G.711, GSM * Added the wide-band g 722.1 codec * DTMF (touch-tone keys while in a call, rfc2833) * STUN server support * SIP proxy support * Diagnostic logs * Dial by domain/IP/URL (user@domain.com) * Configurable SIP and RTP ports * Voice detection/echo cancellation * Speakerphone * Mute * VPN Support * Separate SIP user and authenticate user supported * Editable SIP/RTP ports * Audible button taps * Diagnostic logs * Editable User-Agent field We recommend the following services: * Voipbuster (www.voipbuster.com, 60 free minutes to start) * Vonage (www.vonage.com, separate softphone number required) * sipphone.com (www.sipphone.com) * Sipgate (www.sipgate.com) * Pennytel (www.pennytel.com) WeePhone Works with your existing SIP solution including Asterisk, Trixbox, Cisco, etc. as well. For more info, head to: http://www.domain17.net/weephone Check out videos of the app in action: http://www.domain17.net/weephone/videos.html
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.
Screenshots
Verdict
The clearest difference is review sentiment: WeePhone SIP at 55% against FRB FlatrateBooster's 0%. WeePhone SIP also leads on chart position (#72 vs unranked) and iOS requirement (9.0 vs 15.5). FRB FlatrateBooster's advantage is price (Free vs $1.99). On update cadence, ads, in-app purchases and monetization model 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
FRB FlatrateBooster is free to download; WeePhone SIP costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
WeePhone SIP ships an update every 6 weeks, FRB FlatrateBooster monthly. The most recent releases landed on November 10, 2026 and November 1, 2026 respectively.
| Parameter | WeePhone SIP | FRB FlatrateBooster |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 3.0 (4 ratings) — better | — |
| Positive reviews | 54.5% of reviews — better | 0.0% of reviews |
| Number of ratings | 4 — better | — |
| Update frequency | Every 6 weeks | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Best chart rank | #72 — better | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 9.0 — better | 15.5 |
| Further details — not scored | ||
| Size | 5 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Justin Brady | DALASON GmbH |
Customer experience
WeePhone SIP
FRB FlatrateBooster
Bugs and requests
WeePhone SIP
Reported bugs
34 issues- App crashes on contact selection
- Cannot answer calls reliably
- Falls into time-out when changing networks
- App crashes during configuration
- App crashes on startup after update
Show 29 moreShow fewer
- Copy and paste commands disappear
- Cannot log in even with correct settings
- Push notifications are late or not received
- No sound is sent or received
- Call cuts off after 30 seconds
- DTMF tones not working
- Keypad tones do not work
- Intermittent issues with no audio coming back
- No sound after answering
- Outgoing sound good, incoming sound terrible with dropouts
- Cannot get it working with specific SIP services
- Screen remains black
- Loses authorization frequently
- Cannot hear dialling
- Bluetooth headset doesn't work
- Outbound audio problem (caller cannot hear user)
- No sound after answer
- UI buttons and text fonts are small and hard to read
- Crashes when flipping phone to landscape
- Settings screens are barely usable
- No VPN support
- No updates
- Doesn't work with Vonage
- No instructions
- Cannot be used with Vonage (requires SIP password not provided)
- Does not work with 3cx
- Fail to register with 3cx
- Cannot get rid of letter menu after typing settings
- Incoming call rings are too low
Requested features
17 requests- Background functionality/multitasking
- Multi-SIP account support
- Copy/paste bug fix
- SMS feature
- Time out alert off
Show 12 moreShow fewer
- Codec 729 support
- Voicemail feature
- Google Voice integration
- Improve UI design to be more standard Apple-like
- Recording feature
- Login button to force registration
- Reset button to clear settings
- Ability to control call routing (IP vs. cellular)
- Clear most recent dialed number when typing new one
- Improve interface/buttons/fonts to be easier to read
- Add a log for call progress
- Support for built-in VPN clients
FRB FlatrateBooster
Not enough reviews yet to summarise bugs or requests.
In-app purchases
WeePhone SIP
No in-app purchases
FRB FlatrateBooster
No in-app purchases
Questions
Is WeePhone SIP free?
Is FRB FlatrateBooster free?
Do WeePhone SIP or FRB FlatrateBooster have ads?
Which is updated more often, WeePhone SIP or FRB FlatrateBooster?
Other comparisons
