RudderStack Now Supports the Singular SDID for Mobile Attribution

Why It Matters

Enabling SDID ensures mobile attribution retains coverage for the majority of iOS users after IDFA restrictions, improving measurement fidelity for marketers. The seamless integration lowers operational overhead, allowing businesses to maintain hybrid stacks without data loss.

Key Takeaways

• RudderStack now auto‑detects Singular SDID in events.
• No SDK changes; routing handled in transformer service.
• SDID replaces IDFA, IDFV, AIFA in Singular V2 calls.
• Privacy flag limitDataSharing maps to GDPR/CCPA options.
• Partner attribution adds partner=rudderstack to Singular payloads.

Pulse Analysis

The deprecation of IDFA under Apple’s App Tracking Transparency has forced mobile marketers to seek alternatives that can still uniquely identify users. Singular responded with SDID, a first‑party identifier generated at first app open and returned in the SDK’s session response. For companies that rely on a hybrid stack—Singular for install‑level data and a CDP like RudderStack for in‑app events—this created a gap: SDID never reached the server‑side pipeline, eroding attribution accuracy for the majority of iOS users.

RudderStack’s latest release closes that gap by embedding SDID handling directly into its transformer service. When an event arrives, the platform scans the integration options for `singularDeviceId`; if present, the payload is sent to Singular’s V2 `/api/v2/evt` endpoint, automatically dropping legacy identifiers. The change requires no SDK updates, dashboard toggles, or migration steps, and it respects privacy preferences by mapping the `limitDataSharing` flag to Singular’s GDPR/CCPA parameters. Additionally, every routed event includes a `partner=rudderstack` tag, giving product teams clear visibility into the source of their attribution data.

From a business perspective, the seamless SDID support means marketers can maintain high‑fidelity measurement across iOS devices without rebuilding their data pipelines. The automatic routing reduces engineering effort, shortens time‑to‑value, and safeguards revenue‑impacting insights that would otherwise bleed out due to missing identifiers. As more MMPs adopt server‑side identifiers, RudderStack’s proactive integration positions it as a critical enabler for future‑proof mobile analytics ecosystems.