Nedagram
Transfer Text Over Sound, when internet isn't available
Details
- External ID
- 47060844
- Source
- HN
- Company
- —
- Product
- Nedagram
- Website domain
- nedagram.com
- Launched
- Feb. 18, 2026
- Cohort
- —
- Upvotes
- 6
- Upvotes percentile
- 0.28099730458221023
- Tags
- —
- Fetched at
- Sept. 7, 2026, 9:25 p.m.
- Updated at
- Sept. 7, 2026, 9:25 p.m.
Description
I’ve created Nedagram that I think it's ready but needs extensive testing before announcing it: https://nedagram.com## Problem statement:- during Iran internet shutdown, the government cut off phone lines and mobiles (no text or calls). Gradually they opened up landlines and then phones, but still texting/SMS was down with no real internet.- There were still ways to connect through proxies, vpns, DNS tunnels, etc. However, people had no way to send each other VPN config files or proxy urls/passwords/etc (they needed to call and read them over the phone)## Solution: - TLdr; A modem: a way to transfer text (e.g VPN config) over phone callsHere's the github issue for community testings, Please try and let me know what you think: https://github.com/shayanb/Nedagram/issues/5p.s. there is a CLI version too, would be cool to see what people would do with it: https://www.npmjs.com/package/nedagram
Enrichment
- Theme
- ai translation and localization tools
- Vertical
- —
- Function
- Communication
- Audience
- B2C
- AI stance
- Not AI
- Project type
- Commercial product
- Normalized one-liner
- text transmission over audio
- Manually corrected
- False
Could you build this?
Partial Generating audio frequencies in a browser is easy, but reliably transmitting data over lossy, compressed telephone voice codecs requires specialized acoustic DSP.
What it would actually take: Requires an acoustic modem implementation using Web Audio or native DSP, utilizing modulation schemes such as AFSK or OFDM with heavy Forward Error Correction (Reed-Solomon or convolutional codes). The difficult challenge is surviving aggressive compression and frequency clipping from cellular and PSTN speech codecs (like AMR-NB). Successfully demodulating signals under these conditions requires specialized telecommunications and digital signal processing knowledge.
Discussion
4 comments analyzed.
Competitors mentioned: rattlegram, geogram, minimodem
Concerns raised: 18 seconds to transmit simple text is excessively long, low baud rate limited by phone call audio constraints, audio transmission on phone calls sounds suspicious/dodgy
Feature requests: improve transmission speed/baud rate, mix protocol with songs to disguise audio transmission, support modem over phone calls
Competitors
Other products that read as similar to this one — 82 launches clear the similarity bar, closest 8 shown.
Attention rank: #72 of 83 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 112 days after the earliest competitor.
- SMS Portal · ph · 2026-09-10 · 1 upvotes · similarity 0.43
- Linux and iPhone Continuity (iMessage / SMS) · hn · 2026-08-20 · 10 upvotes · similarity 0.40
- knocks · ph · 2026-09-16 · 1 upvotes · similarity 0.39
- We built a way for web apps to message users' phones without SMS · hn · 2026-09-29 · 7 upvotes · similarity 0.37
- zapsms · ph · 2026-09-25 · 1 upvotes · similarity 0.37
- Nayerly: Offline Translator · ph · 2026-09-12 · 2 upvotes · similarity 0.37
- jev-chat-jarvis-ios · github · 2026-09-23 · 20 upvotes · similarity 0.37
- KoruTalk · ph · 2026-09-28 · 1 upvotes · similarity 0.37
Other launches for this product
- No other launches for this product.