# SipSync Calls vs Whoosh

The clearest difference is in-app purchases: SipSync Calls at none against Whoosh's 10. SipSync Calls also leads on update cadence (every 6 days vs every 2 months). Whoosh's advantage is iOS requirement (13.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. Whoosh sells 10 in-app purchases, starting at $9.99 per month. SipSync Calls asks for nothing beyond the download.

SipSync Calls ships an update every 6 days, Whoosh every 2 months. Both last shipped on October 30, 2026.

## The numbers

| Metric | SipSync Calls | Whoosh |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 2 months |
| Size | 82 MB | 125 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [tanju yayak](https://appshunter.io/developer/898543604) | [晓珊 管](https://appshunter.io/developer/1809381673) |

## What reviewers say

### SipSync Calls

[App page](https://appshunter.io/ios/app/sipsync-calls/id6742335994)

**Features:** macOS Compatibility

**In-app purchases:** none


### Whoosh

[App page](https://appshunter.io/ios/app/whoosh-connect-and-explore/id6749577003)

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Whoosh-Vip-1 | $9.99 | per month |
| WhooshCoinsBag 01 | $0.99 | one-time |
| WhooshCoinsBag 02 | $4.99 | one-time |
| WhooshCoinsBag 07 | $4.99 | one-time |
| WhooshCoinsBag 03 | $9.99 | one-time |
| WhooshCoinsBag 08 | $9.99 | one-time |
| WhooshCoinsBag 04 | $25.99 | one-time |
| WhooshCoinsBag 05 | $48.99 | one-time |
| WhooshCoinsBag 09 | $49.99 | one-time |
| WhooshCoinsBag 06 | $99.99 | one-time |


## Frequently asked questions

### Is SipSync Calls free?

SipSync Calls is free to download, with no in-app purchases.

### Is Whoosh free?

Whoosh is free to download, with in-app purchases available.

### Do SipSync Calls or Whoosh have ads?

Neither SipSync Calls nor Whoosh shows ads.

### Which is updated more often, SipSync Calls or Whoosh?

SipSync Calls ships an update every 6 days, and Whoosh every 2 months. Most recently, SipSync Calls was updated on October 30, 2026 and Whoosh on October 30, 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.*