feat(ios): update for 4.15.3

[dcrawbuck]

Summary

Updates iOS SDK docs from 4.15.2 -> 4.15.3.

Changes

• Updated <SdkLatestVersion> in content/docs/ios/index.mdx and content/docs/ios/sdk-reference/index.mdx
• Added 4.15.3 changelog entry to content/docs/ios/changelog.mdx (and re-synced the 4.15.2 entry to match upstream after Apple Search Ads / IDFA filter were reorganized)

Upstream references

• Compare: superwall/Superwall-iOS@4.15.2...4.15.3
• Release: https://github.com/superwall/Superwall-iOS/releases/tag/4.15.3
• Changelog source: https://github.com/superwall/Superwall-iOS/blob/4.15.3/CHANGELOG.md

Upstream changelog (4.15.3)

Fixes

• Fixes computed period prices (weeklyPrice, dailyPrice) being off by a small amount for products whose subscription period is expressed in days.

Verification

• bun test -> 37 pass, 0 fail
• bun run build:cf -> progressed past MDX transform; OOM-killed during chunk render in this environment (not caused by these changes)

Follow-ups

• None. 4.15.3 is a fix-only release with no public API surface changes (internal StoreKit period-price math only); no reference docs or guide content needed updates.

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Automated by Lever SDK docs version check

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Note

Low Risk
Low risk: documentation-only updates that bump the displayed iOS SDK version and add release notes; no runtime code paths are affected.

Overview
Updates the iOS docs to reflect SDK v4.15.3 by bumping <SdkLatestVersion> from 4.15.2 to 4.15.3 on the main iOS docs landing page and the SDK reference overview.

Adds a 4.15.3 changelog entry noting a fix for slightly incorrect computed subscription period prices (weeklyPrice/dailyPrice) when the period is expressed in days, and re-aligns the 4.15.2 changelog bullets (including the IDFA all-zeros filtering note) to match upstream.

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Status	Name	Latest Commit	Preview URL	Updated (UTC)
✅ Deployment successful! View logs	superwall-docs-staging	d77d0be	Commit Preview URL Branch Preview URL	May 18 2026, 04:14 PM