# Migradock: Migration Lab — Sequence Safer DB Changes

> Sequence Safer DB Changes (iPhone/iPad app by Robert Corbin.)

- Source: https://appshunter.io/ios/app/migradock-migration-lab/id6792495908 (this page in markdown: same URL + `.md`)
- Developer: [Robert Corbin](https://appshunter.io/developer/1890247992)
- Category: Developer Tools, Productivity
- Price: $2.99
- Age rating: 4+
- Requires: iOS 17.0 · 3 MB
- Languages: American English
- Released: 2026-07-29
- Data updated: 2026-09-10
- User reviews in markdown: https://appshunter.io/ios/app/migradock-migration-lab/id6792495908/reviews.md

## What is Migradock?

Migradock puts a zero-downtime database migration plan on one screen: a dependency-aware runway from the first expand step to the final contract.

The app opens directly into a phase-colored timeline chart that schedules every step after its dependencies and plots start and end in elapsed minutes across the five classic phases — Expand, Backfill, Switch, Validate, Contract. Three badges summarize the plan at a glance: an overall risk score, the critical-path duration, and the longest table lock. The Sequence evidence list shows each step with its predecessors and whether it has been rehearsed, and the Release gate section renders a decision — Ready for review, Conditional approval, or Blocked until irreversible steps are rehearsed — alongside an adjustable lock budget slider and a reminder to keep expand and contract deployments separate.

FEATURES
- Dependency-aware timeline built by topological ordering, with dependency cycles flagged
- Five-phase expand / backfill / switch / validate / contract runbook model
- Risk score that weighs lock duration, irreversible steps, and unrehearsed steps
- Release gate that blocks irreversible steps until they are rehearsed
- Critical-path and max-lock badges
- Lock budget slider from 1 to 60 seconds

PREMIUM BY DESIGN
One-time paid download. No account, no ads, no analytics, no tracking, and no network access — everything runs on your device and works completely offline.


## Version history (last 2 releases)

### 1.1 — 2026-08-31

Version 1.1 is a focused redesign: Migradock now opens directly into a single, fast migration runway. The timeline chart schedules every step from its dependencies across the expand-to-contract phases, badges surface risk, critical path, and max lock at a glance, and the release gate shows a clear go/no-go decision with an adjustable lock budget.

### 1.0 — 2026-07-29

No release notes.

## More apps by Robert Corbin

- [Daily Word Journey](https://appshunter.io/ios/app/daily-word-journey/id6761548266)
- [Hush Secret Text](https://appshunter.io/ios/app/hush-secret-text/id6761658175)
- [Renew Guard](https://appshunter.io/ios/app/renew-guard/id6761755447)
- [Receipt to PDF](https://appshunter.io/ios/app/receipt-to-pdf/id6761782025)
- [Route Your Pay](https://appshunter.io/ios/app/route-your-pay/id6761783719)
- [Tip Arbiter](https://appshunter.io/ios/app/tip-arbiter/id6761786879)

All apps by Robert Corbin: https://appshunter.io/developer/1890247992

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-10.*