Rattlegram vs One One 1
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.
One One 1
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One One 1:1 — Instant Voice, Real Presence One One 1:1 turns your phone into an instant voice channel. Just press and talk. Your voice goes live immediately. Release, and you’re listening again. It’s real-time voice communication built for speed, simplicity, and presence. Whether you’re staying in sync with friends, coordinating with a team, or keeping a conversation flowing hands-free, One One 1:1 keeps communication fast and natural. How It Works - Press and hold to talk - Release to listen - Speak instantly — no dialing - Stay connected through always-available channels Key Features - Push-to-Talk Voice Ultra-low latency voice the moment you press. - Always-On Channels Private channels that stay live — join or leave anytime. - Real Presence See who’s online and who’s talking in real time. Why One One 1:1 Text slows conversations down. Calls require commitment. One One 1:1 brings back fast, natural voice — always ready when you are. Have questions or feedback? Reach us at hello@oneoneapp.in Follow us for updates and announcements: Instagram: @1.1.app X: @oneone_app
Screenshots
Verdict
The clearest difference is iOS requirement: One One 1 at 15.0 against Rattlegram's 17.6. On price, ads, in-app purchases and device support 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.
| Parameter | Rattlegram | One One 1 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (29 ratings) — better | — |
| Positive reviews | 90.0% of reviews | — |
| Number of ratings | 29 — better | — |
| Update frequency | Every 9 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 45 MB |
| Age rating | 4+ | 4+ |
| Developer | aicodix GmbH | Richard Shaju |
In-app purchases
Rattlegram
No in-app purchases
One One 1
No in-app purchases
