# Mumblefy vs Rattlegram

The clearest difference is review sentiment: Rattlegram at 90% against Mumblefy's 45%. Rattlegram also leads on rating (4.5 vs 1.9) and in-app purchases (none vs 1). Mumblefy's advantage is iOS requirement (7.0 vs 17.6). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Mumblefy sells 1 one-off in-app purchase. Rattlegram asks for nothing beyond the download.

Rattlegram holds the better App Store score, 4.5 against 1.9. Both are backed by a comparable volume of ratings — 22 and 23 respectively. Written reviews point the same way: 45% of Mumblefy's written reviews are positive against 90% of Rattlegram's.

Mumblefy ships an update every 8 months, Rattlegram every 9 months. The most recent releases landed on July 18, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Mumblefy | Rattlegram |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.9 (22 ratings)](https://appshunter.io/ios/app/mumblefy/id858752232/reviews) | **[4.5 (23 ratings)](https://appshunter.io/ios/app/rattlegram/id1664526096/reviews)** |
| Number of ratings | 22 | **23** |
| Positive reviews | 45.3% of reviews | **90.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 8 months** | Every 9 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 10 MB | 1 MB |
| Requires iOS | **7.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Flamethrower](https://appshunter.io/developer/1110459680) | [aicodix GmbH](https://appshunter.io/developer/1664526098) |

## What reviewers say

### Mumblefy

[App page](https://appshunter.io/ios/app/mumblefy/id858752232)

Connect to Mumble voice chat servers on the go with this intuitive application. Enjoy seamless audio and text communication with friends, manage server configurations, and utilize features like push-to-talk and background operation.

**Highlights:** Connect to Mumble servers, Audio and text chat, Push to talk and auto speech, Background operation, Multiple server configurations, Channel and user lists, Private messaging

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $4.99 | one-time |


### 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 Mumblefy free?

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

### Is Rattlegram free?

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

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

Rattlegram is rated higher. Mumblefy averages 1.9 out of 5 from 22 ratings, while Rattlegram averages 4.5 from 23 ratings.

### Do Mumblefy or Rattlegram have ads?

Neither Mumblefy nor Rattlegram shows ads.

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

Mumblefy ships an update every 8 months, and Rattlegram every 9 months. Most recently, Mumblefy was updated on July 18, 2026 and Rattlegram on September 8, 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.*