Rattlegram vs Retichat
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
Retichat
This app provides end-to-end encrypted communication over decentralized networks. It supports store-and-forward propagation and federated nodes for lightweight push notifications. Future updates will include LoRa, group, and channel support.
- End-to-end forward encryption
- Decentralized and organization-less
- LXMF Store-and-Forward support
- RFed federated propagation
- Lightweight push notifications
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Reticulum LXMF chat client for iPhone Offers end-to-end forward encrypted communication over Reticulum networks Completely decentralized and organization-less Support for LXMF Store-and-Forward propagation Additional functionality using RFed federated propagation nodes Features lightweight push notification through a notify-only (no message data) relay RFed capability Soon to come: LoRa support Group support Channel support
Screenshots
Verdict
The clearest difference is review sentiment: Rattlegram at 90% against Retichat's 36%. Rattlegram also leads on rating (4.5 vs 2.9). Retichat's advantage is update cadence (every 3 days vs every 9 months). On price, ratings volume, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Rattlegram holds the better App Store score, 4.5 against 2.9. Both are backed by a comparable volume of ratings — 23 and 8 respectively. Written reviews point the same way: 90% of Rattlegram's written reviews are positive against 36% of Retichat's.
Rattlegram ships an update every 9 months, Retichat every 3 days. The most recent releases landed on October 11, 2026 and October 7, 2026 respectively.
| Parameter | Rattlegram | Retichat |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (23 ratings) — better | 2.9 (8 ratings) |
| Positive reviews | 90.0% of reviews — better | 36.4% of reviews |
| Number of ratings | 23 — better | 8 |
| Update frequency | Every 9 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 | 17.6 |
| Further details — not scored | ||
| Size | 1 MB | 18 MB |
| Age rating | 4+ | 17+ |
| Developer | aicodix GmbH | New Endian LLC |
Customer experience
Rattlegram
Retichat
In-app purchases
Rattlegram
No in-app purchases
Retichat
No in-app purchases
