# Letterbox Check vs Keevio2

The clearest difference is update cadence: Keevio2 at every 5 months against Letterbox Check's every 12 months. Letterbox Check's advantage is iOS requirement (12.0 vs 15.0). 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.

Letterbox Check ships an update every 12 months, Keevio2 every 5 months. The most recent releases landed on September 9, 2026 and July 7, 2026 respectively.

## The numbers

| Metric | Letterbox Check | Keevio2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (5 ratings)](https://appshunter.io/ios/app/keevio2/id1628572166/reviews)** |
| Number of ratings | — | **5** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 5 months** |
| Monetization | — | Free |
| Size | 29 MB | 93 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Redburst Technologies AB](https://appshunter.io/developer/347889943) | [IP Cortex Ltd.](https://appshunter.io/developer/1485395484) |

## What reviewers say

### Letterbox Check

[App page](https://appshunter.io/ios/app/letterbox-check/id1485736636)

**In-app purchases:** none


### Keevio2

[App page](https://appshunter.io/ios/app/keevio2/id1628572166)

This softphone application connects to a communication platform, offering HD voice and video calls. It supports push notifications and enables free calling between its users.

**Highlights:** SIP softphone functionality, Push notifications, HD voice and video support, Free calling between app users

**In-app purchases:** none


## Frequently asked questions

### Is Letterbox Check free?

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

### Is Keevio2 free?

Keevio2 is free to download, with no in-app purchases.

### Do Letterbox Check or Keevio2 have ads?

Neither Letterbox Check nor Keevio2 shows ads.

### Which is updated more often, Letterbox Check or Keevio2?

Letterbox Check ships an update every 12 months, and Keevio2 every 5 months. Most recently, Letterbox Check was updated on September 9, 2026 and Keevio2 on July 7, 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.*