All Articles
Catching Download Size Regressions Before Submission Day — A Weekly Agent Gate for AAB/IPA Size Budgets
Mediation SDKs and bundled assets quietly inflate download size. A design for size ledgers, budget gates, and agent-driven delta attribution using bundletool and App Thinning reports.
Stop Treating Dependency Updates as a Monthly Chore — Weekly Agent Runs with Semver Risk Triage and Verification Gates
Move from batch-updating 47 stale packages at once to a weekly agent-driven routine: semver-based risk tiers, a playbook YAML, hallucination-proof changelog reports, and a lockfile diff gate.
Stop Dreading the Rejection Email: Triaging App Store Review Feedback with an Antigravity Agent
A working setup for feeding App Store rejection notices into Antigravity, classifying them against a guideline playbook, and gating resubmission with an Info.plist lint — with real turnaround numbers.
Before You Let an Agent Own Your Tests — Deciding How Fixtures and Seed Data Live
Agents will happily edit test data until the tests pass. A practical defense built on fixture ownership, deterministic seeds, and anonymized subsets of production data, with working scripts.
Systematize Pre-Release Checks for Sound-Playing Apps with Waveform Rendering and Agents
The 6/26 update let Antigravity render audio files. Drawing on years of shipping sound in healing apps, here is a design that folds loudness, clipping, length, and silence checks into an agent verification loop, with the actual scripts.
When Every Antigravity-Written Test Is Green but the Same Bug Comes Back — Field Notes on Measuring Hollow Assertions
Your AI-written tests all pass, coverage is high, yet the same defect returns to production. The cause is over-mocking and tautological assertions. These are field notes on using mutation testing as ground truth to measure what your tests actually protect, and to fix it operationally.
The App Open Ad Antigravity Wrote for Me Fires Every Time I Return From My Own Paywall or Rewarded Video
Ask Antigravity to add an App Open ad and it shows one the instant you return from your own rewarded video or the Google Play purchase sheet — which also brushes against AdMob policy. Here is a foreground arbiter that records why the app came back, with working Kotlin and a verification matrix.
Running Xcode 27's Agent and Antigravity Side by Side: Designing the Work Boundary for iOS
With Xcode 27 bringing agentic coding into the IDE itself, iOS development now has two code-writing agents over one repository. Here is a practical design for keeping a single source of truth and splitting work across spec, implementation, and verification.
Adding Mediation Partners Quietly Starved My iOS Attribution — Reconciling SKAdNetwork IDs Across Four Apps
I added mediation partners but iOS revenue barely moved — the cause was missing SKAdNetwork IDs in Info.plist. Here is how I reconciled SKAdNetworkItems across four apps, using an Antigravity agent as the matcher while keeping the revenue decisions by hand.
When Streaming Works Locally but Arrives All at Once in Production — Field Notes on Proxy Buffering and Silent Stalls
Stream Gemini through Antigravity over SSE and it flows token-by-token on localhost, then freezes for seconds and dumps the whole answer in production. Field notes on measuring the stall first, then killing proxy buffering, idle disconnects, and reconnect-driven double generation.
Before AI Studio's Gradle and AGP Versions Quietly Break Your Existing App
When you drop an AI Studio-generated Kotlin/Compose screen into an existing Android app, the AGP, Kotlin, and library versions drift and the build breaks silently. Here is how to pin a single source of truth with a version catalog and add a gate that inspects the generated declarations at the import boundary, with measurements and code.
When a Local iOS Build Passes but CI's TestFlight Upload Rejects the Signature — Field Notes on match Code-Signing Drift
Running fastlane match on CI can produce builds that succeed while only the TestFlight upload fails on signing. These field notes show how to diagnose the certificate/profile drift reproducibly, lock CI to readonly, and add a pre-upload gate that stops bad signatures before they reach Apple.