Mumblefy vs Rattlegram
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mumblefy
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.
- 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
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Mumblefy is a Mumble voice chat application that allows you to connect to your favorite Mumble servers. It is the best way to stay connected with all your friends on the go! Continue your conversations anywhere, anytime. Mumblefy takes your Mumble experience to the next level. Our fresh and beautiful design combined with easy to use controls will provide you with all the Mumble tools you know and love. FEATURES -- * Works over Wifi and 3G * Great, user-friendly user interface * Can run in the background * Allows you to store multiple servers configurations * List of channels with all connected users * Push to talk button with auto speech mode * Chat to your friends, through both audio and text. * Send private messages * Supports speaker phone and built in phone speaker. * Inbound and outbound audio levels support * Bluetooth headset support * Supports both registered and guest server accounts * Supports X.509 certificate authentication Love the app? Please share your feedback with the world by leaving a review. Have an issue or caused a crash? Contact our support at mumblefy@pandaris.com and we'll get it fixed as soon as possible.
Rattlegram
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.
- COFDM technology
- Audio-based SMS
- 160 ms OFDM symbols
- Differential PSK modulation
- Forward error correction
- Low bandwidth requirement
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COFDMTV is based on COFDM (coded orthogonal frequency-division multiplexing) technology: - 160 ms long OFDM symbols - 6.25 Hz per sub-carrier - 1/8 guard interval - differentially encoded PSK (phase-shift keying) modulation - systematic polar codes for forward error correction Currently Modes 14, 15 and 16 are supported: Using either SPC(2048, 1392), SPC(2048, 1056) or SPC(2048, 712) with CRC32C aided SCL decoding and differential QPSK modulation for the payload. Only a bandwidth of 1600 Hz is needed and the transmission of either 85, 128 or 170 bytes take about one second with the leading noise and fancy header disabled.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Mumblefy | Rattlegram |
|---|---|---|
| Price | Free | Free |
| Rating | 1.9 (22 ratings) | 4.5 (23 ratings) — better |
| Positive reviews | 45.3% of reviews | 90.0% of reviews — better |
| Number of ratings | 22 | 23 — better |
| Update frequency | Every 8 months — better | Every 9 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 7.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 10 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Flamethrower | aicodix GmbH |
Customer experience
Mumblefy
Rattlegram
In-app purchases
Mumblefy
- Remove Ads$4.99
Rattlegram
No in-app purchases








