# imp™ vs Zillit

The clearest difference is update cadence: Zillit at every 4 days against imp™'s every 2 months. imp™'s advantage is iOS requirement (12.1 vs 15.0). On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for imp™ against 5.0 for Zillit. Both are backed by a comparable volume of ratings — 12 and 8 respectively.

imp™ ships an update every 2 months, Zillit every 4 days. The most recent releases landed on October 1, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | imp™ | Zillit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (12 ratings)](https://appshunter.io/ios/app/imp-imp-box-controller/id1509443801/reviews) | [5.0 (8 ratings)](https://appshunter.io/ios/app/zillit/id6443424188/reviews) |
| Number of ratings | **12** | 8 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | Free | Free |
| Size | 36 MB | 473 MB |
| Requires iOS | **12.1** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Its My Phone, Inc](https://appshunter.io/developer/1509443800) | [Zillit LLC](https://appshunter.io/developer/1594424923) |

## What reviewers say

### imp™

[App page](https://appshunter.io/ios/app/imp-imp-box-controller/id1509443801)

This app works with a smart home device to filter unwanted landline calls, allowing only desired contacts to reach you. It also functions as a remote answering machine for your landline, letting you manage voicemails from anywhere.

**Highlights:** Real-time call filtering, Greenlist Technology™, Syncs iPhone contacts, Remote voicemail access, Do Not Disturb mode, Invite others to landline

**In-app purchases:** none


### Zillit

[App page](https://appshunter.io/ios/app/zillit/id6443424188)

This app offers a unified communication platform for entertainment industry professionals and others. It allows for real-time notices, image uploads, calendar events, and secure document sharing. Users can make individual or group audio/video calls and communicate privately via units or chat, all within a project-based framework.

**Highlights:** Real-time notices and image uploads, Calendar event creation, Secure document sharing (general/confidential), Individual/group audio & video calls, Private communication via Units or Chat, Cross-device sync (desktop/mobile), Project-based communication

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

**In-app purchases:** none


## Frequently asked questions

### Is imp™ free?

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

### Is Zillit free?

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

### Which has better reviews, imp™ or Zillit?

imp™ and Zillit are both rated 5.0 out of 5 on the App Store, from 12 and 8 ratings respectively.

### Do imp™ or Zillit have ads?

Neither imp™ nor Zillit shows ads.

### Which is updated more often, imp™ or Zillit?

imp™ ships an update every 2 months, and Zillit every 4 days. Most recently, imp™ was updated on October 1, 2026 and Zillit on October 4, 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.*