# FastsApp vs Keren Calls

The clearest difference is in-app purchases: FastsApp at none against Keren Calls's 3. FastsApp also leads on iOS requirement (12.0 vs 16.0). Keren Calls's advantage is update cadence (every 3 weeks vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. Keren Calls sells 3 in-app purchases, starting at $17.99 per month. FastsApp asks for nothing beyond the download.

FastsApp ships an update every 3 months, Keren Calls every 3 weeks. The most recent releases landed on October 13, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | FastsApp | Keren Calls |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Size | 47 MB | 33 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Dimscorp](https://appshunter.io/developer/1699717264) | [abel Beyene tekele](https://appshunter.io/developer/1874279359) |

## What reviewers say

### FastsApp

[App page](https://appshunter.io/ios/app/fastsapp/id6454721761)

**Features:** macOS Compatibility

**In-app purchases:** none


### Keren Calls

[App page](https://appshunter.io/ios/app/keren-calls/id6758665795)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Standard Plan | $17.99 | per month |
| €5 Calling Credit | $5.99 | one-time |
| €10 Calling Credit | $11.99 | one-time |


## Frequently asked questions

### Is FastsApp free?

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

### Is Keren Calls free?

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

### Do FastsApp or Keren Calls have ads?

Neither FastsApp nor Keren Calls shows ads.

### Which is updated more often, FastsApp or Keren Calls?

FastsApp ships an update every 3 months, and Keren Calls every 3 weeks. Most recently, FastsApp was updated on October 13, 2026 and Keren Calls on October 7, 2026.

---

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