Privacy Policy.
AlterSend is a peer-to-peer file transfer application operated by Devaprime LLC. This policy explains what information AlterSend processes, where it goes, and your choices.
The short version
AlterSend has no accounts and no servers of its own. Files go directly between your devices and never pass through our infrastructure. We collect almost nothing by default.
What we collect
1. Files you transfer
Files are transferred directly between the two devices involved in a session, encrypted with the Noise protocol (Curve25519 key exchange + ChaCha20-Poly1305). We have no servers that relay or store your files. We never see the contents of your transfers.
2. IP addresses and peer discovery
AlterSend uses Hyperswarm, a distributed hash table (DHT), to help two devices find each other. When you start a transfer session, your device's IP address is briefly visible to other nodes on the DHT network. This is an inherent property of any peer-to-peer system that uses a public DHT for discovery. The connection itself is encrypted; only the IP used to reach you is visible to DHT participants, not your file contents or the join code.
We do not operate the DHT ourselves. It is a decentralized network run by its participants.
3. Crash reports (optional, opt-in)
Mobile (iOS / Android): Crash reporting is disabled by default. You can enable it in Settings → Crash reports. When enabled, the app sends crash data to Sentry (a third-party service operated by Functional Software, Inc., based in the United States).
Desktop (macOS / Windows / Linux): Crash reporting is controlled by the toggle in the footer settings panel. When enabled, both the renderer and the main process send crash data to Sentry.
What Sentry receives when crash reporting is on:
- Crash stack traces and unhandled error messages
- Device model, operating system version, and app version
- Recent in-app events leading up to the crash (e.g. which screen was active)
- A randomly-generated installation identifier, not linked to your identity
- No file names, file contents, peer keys, or personal information is intentionally included
Sentry's own privacy policy is at sentry.io/privacy. Event data is retained for 90 days.
4. Camera access (iOS / Android)
The camera is used only to scan the QR code shown on the sender's screen. No images are captured or stored by AlterSend.
5. Photo and media library access (iOS / Android)
AlterSend requests access to your photo library only when you choose to send photos or videos, or when you accept received images and save them to your library. We do not scan, upload, or analyse your photos.
6. Local storage
AlterSend stores the following on your device only:
- A per-session Noise key pair used to authenticate your device to a peer during a transfer. This key is ephemeral and is not synced or uploaded anywhere.
- Your crash-reporting preference (on/off).
- Pending transfer state while a transfer is in progress.
All local data is removed when you uninstall the app.
What we do not collect
- Your name, email address, phone number, or any account credentials — AlterSend has no accounts.
- Your location.
- Any identifiers from advertising networks or analytics SDKs.
- Any data about which files you transferred, to whom, or when — we have no way to observe this.
Third-party services
| Service | Purpose | Policy |
|---|---|---|
| Sentry | Crash reporting (opt-in) | sentry.io/privacy |
| Hyperswarm DHT | Peer discovery | Decentralized; no central operator |
We do not use advertising SDKs, analytics platforms, or tracking pixels.
Children's privacy
AlterSend is not directed at children under 13 years of age. We do not knowingly collect information from children. If you believe a child has provided information through the app, please contact us and we will delete it promptly.
Data deletion
Because AlterSend has no accounts and no servers, there is no data to delete from our systems. All data stored by the app lives on your device and is removed when you uninstall it.
If you enabled crash reporting and want Sentry to delete your crash events, you can contact Sentry directly at sentry.io/privacy referencing AlterSend as the application.
Changes to this policy
If we make material changes we will update the "Last updated" date at the top of this page and, where appropriate, notify users via the app or release notes.
Contact
AlterSend is a product of Devaprime LLC. Questions or concerns about this policy: hello@altersend.com
To report abusive content received through the app: abuse@altersend.com