# WeePhone SIP vs FRB FlatrateBooster

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.

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.

## The numbers

| Metric | WeePhone SIP | FRB FlatrateBooster |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[3.0 (4 ratings)](https://appshunter.io/ios/app/weephone-sip/id301500729/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | **54.5% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Monthly** |
| Monetization | Free | Free |
| Best chart rank | **#72** | — |
| Size | 5 MB | 10 MB |
| Requires iOS | **9.0** | 15.5 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Justin Brady](https://appshunter.io/developer/293798500) | [DALASON GmbH](https://appshunter.io/developer/531312222) |

## What reviewers say

### WeePhone SIP

[App page](https://appshunter.io/ios/app/weephone-sip/id301500729)

**Currently charting:** #72 Top Paid · Social Networking (US App Store)

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.

**Highlights:** 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

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Good voice quality
- 👍 Low latency
- 👍 Works with various SIP providers
- 👍 Cost-saving for calls
- 👍 Works well on Wi-Fi

**What reviewers complain about**

- 🐛 Crashes frequently
- 🐛 Unreliable connection
- 🐛 Calls don't go through
- 🐛 Audio issues (no sound, echo, dropouts)
- 🐛 Does not work in background/no push notifications

**Reported bugs**

- 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

**Requested features**

- Background functionality/multitasking
- Multi-SIP account support
- Copy/paste bug fix
- SMS feature
- Time out alert off


### FRB FlatrateBooster

[App page](https://appshunter.io/ios/app/frb-flatratebooster/id531312219)

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.

**Highlights:** 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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is WeePhone SIP free?

WeePhone SIP costs $1.99, with no in-app purchases.

### Is FRB FlatrateBooster free?

FRB FlatrateBooster is free to download, with no in-app purchases.

### Do WeePhone SIP or FRB FlatrateBooster have ads?

Neither WeePhone SIP nor FRB FlatrateBooster shows ads.

### Which is updated more often, WeePhone SIP or FRB FlatrateBooster?

WeePhone SIP ships an update every 6 weeks, and FRB FlatrateBooster monthly. Most recently, WeePhone SIP was updated on November 10, 2026 and FRB FlatrateBooster on November 1, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*