Rattlegram - SMS via audio!

Name: Rattlegram - SMS via audio!
Rating: 4.38 (232 reviews)
Author: aicodix GmbH

Liveaicodix GmbH3 apps · 52.9K installsCommunicationFreecom.aicodix.rattlegram

Transmit short text messages over COFDMTV encoded audio signals

Alert me ★ Watch Open in Play ↗

Total installs: 45,266
Installs / day: 0
Rating: 4.4★
Released: 12 Jan 2023
Last update: 17 Dec 2025
Countries: —

Install history

exact counter from Google Play

30dAll

Installs per day · last 90 days

Change timeline

Full history

No changes recorded yet. We compare every crawl with the previous one and list title, icon, screenshots, description, version, price and availability changes here.

Country availability

Availability has not been checked for this app yet. “Check all countries” looks the app up in about 140 Google Play storefronts and shows where it is live, listed but not installable, or missing — plus any country-specific (custom) store listings.

Top countries

Country data will be available soon.

We estimate where downloads come from using the app’s position in Google Play’s top charts in about 140 countries. This app is not in any chart we have collected yet; the estimate appears as soon as it is.

Top chart positions

Not in any tracked top chart.

App manifest

Read this app's manifest from Google Play: permissions, declared SDKs, components and AdMob app ID. Saved analysis appears here automatically.

Data safety

declared by the developer on Google Play

No data shared with third parties
No data collected
Follows the Play Families Policy

This is the developer's own declaration, summarised from the Play listing. The permissions below show what the app is technically able to access.

Permissions

1 in 1 group

1 Sensitive0 Notable0 Routine

What this app can do with your phone

Record sound using your phone's microphone

MicrophoneSensitive1

Access to your phone's microphone to record sound

Record sound using your phone's microphonerecord audio · RECORD_AUDIO

Sensitive = can reach personal data, location, camera/mic or act on your behalf. Notable = changes how your device behaves. Routine = normal for almost every app. Source: Google Play's permission list for all versions of this app.

Store listing

Full description

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.

What's new

- added support for 16 KB page size - updated libs and tools

Growing in Communication

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