# ESP Design vs Geren

The clearest difference is update cadence: Geren at every 3 weeks against ESP Design's every 11 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ESP Design ships an update every 11 months, Geren every 3 weeks. The most recent releases landed on September 23, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | ESP Design | Geren |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/geren/id6738434493/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 65 MB | 37 MB |
| Requires iOS | **12.0** | 13.4 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nestor Reyes](https://appshunter.io/developer/1111310208) | [Denwa Technology Corp.](https://appshunter.io/developer/487632519) |

## What reviewers say

### ESP Design

[App page](https://appshunter.io/ios/app/esp-design/id1490460886)

**In-app purchases:** none


### Geren

[App page](https://appshunter.io/ios/app/geren/id6738434493)

This innovative softphone allows for seamless and reliable call management using push notification technology. It ensures you never miss a call, even when the app is in the background or closed. Designed for integration with Denwa PBX systems, it offers flexibility for mobile and desktop users in business environments.

**Highlights:** Push notification technology for missed calls, Seamless call reception, Background and closed app call handling, Integration with Denwa PBX systems, Flexible for mobile and desktop use

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

**In-app purchases:** none


## Frequently asked questions

### Is ESP Design free?

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

### Is Geren free?

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

### Do ESP Design or Geren have ads?

Neither ESP Design nor Geren shows ads.

### Which is updated more often, ESP Design or Geren?

ESP Design ships an update every 11 months, and Geren every 3 weeks. Most recently, ESP Design was updated on September 23, 2026 and Geren on September 13, 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.*