# BlueDV vs Rattlegram

The clearest difference is rating: Rattlegram at 4.5 against BlueDV's 3.1. Rattlegram also leads on review sentiment (90% vs 52%). BlueDV's advantage is iOS requirement (10.0 vs 17.6). On price, ratings volume, update cadence 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.

Rattlegram holds the better App Store score, 4.5 against 3.1. Both are backed by a comparable volume of ratings — 24 and 23 respectively. Written reviews point the same way: 52% of BlueDV's written reviews are positive against 90% of Rattlegram's.

BlueDV ships an update every 4 months, Rattlegram every 9 months. The most recent releases landed on October 8, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | BlueDV | Rattlegram |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.1 (24 ratings)](https://appshunter.io/ios/app/bluedv/id1186753798/reviews) | **[4.5 (23 ratings)](https://appshunter.io/ios/app/rattlegram/id1664526096/reviews)** |
| Number of ratings | **24** | 23 |
| Positive reviews | 52.2% of reviews | **90.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 9 months |
| Monetization | Free | Free |
| Size | 39 MB | 1 MB |
| Requires iOS | **10.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [David Grootendorst](https://appshunter.io/developer/930678749) | [aicodix GmbH](https://appshunter.io/developer/1664526098) |

## What reviewers say

### BlueDV

[App page](https://appshunter.io/ios/app/bluedv/id1186753798)

Transform your Apple device into a DMR and Fusion hotspot. This app enables seamless connectivity with a DVMEGA and iBlueStack for amateur radio communication.

**Highlights:** DMR hotspot functionality, Fusion hotspot functionality, Works with DVMEGA, Works with iBlueStack, Utilizes Apple device

**Features:** macOS Compatibility

**In-app purchases:** none


### Rattlegram

[App page](https://appshunter.io/ios/app/rattlegram/id1664526096)

This app utilizes advanced COFDM technology for audio-based SMS transmission. It supports various modes with specific encoding and modulation techniques, requiring minimal bandwidth for efficient data transfer.

**Highlights:** COFDM technology, Audio-based SMS, 160 ms OFDM symbols, Differential PSK modulation, Forward error correction, Low bandwidth requirement

**In-app purchases:** none


## Frequently asked questions

### Is BlueDV free?

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

### Is Rattlegram free?

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

### Which has better reviews, BlueDV or Rattlegram?

Rattlegram is rated higher. BlueDV averages 3.1 out of 5 from 24 ratings, while Rattlegram averages 4.5 from 23 ratings.

### Do BlueDV or Rattlegram have ads?

Neither BlueDV nor Rattlegram shows ads.

### Which is updated more often, BlueDV or Rattlegram?

BlueDV ships an update every 4 months, and Rattlegram every 9 months. Most recently, BlueDV was updated on October 8, 2026 and Rattlegram on September 25, 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.*