# Specverge: API Contract — Diff APIs Before Release

> Diff APIs Before Release (iPhone/iPad app by Robert Corbin.)

- Source: https://appshunter.io/ios/app/specverge-api-contract/id6792494435 (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 · 2 MB
- Languages: English
- Released: 2026-07-29
- Data updated: 2026-09-10
- User reviews in markdown: https://appshunter.io/ios/app/specverge-api-contract/id6792494435/reviews.md

## What is Specverge?

Specverge is an API contract compatibility gate you can run entirely on device — compare two versions of a REST contract and see, before you ship, exactly which changes will break your consumers.

It opens on a worked example: a projects API moving from 2.4 to a 2.5 candidate. Specverge diffs the two contracts and classifies every change as Breaking, Review, or Compatible — endpoint removals, field removals, type narrowing (for example string to boolean), a previously optional field becoming required, a new required field, and dropped response codes are all caught, each with concrete remediation advice.

The Release tab turns the findings into a single release score with route-coverage and open-breaking read-outs, an impact chart, and a ship / hold recommendation. It is interactive: as you waive each breaking change — once you have a migration plan for it — the score and recommendation update live. The Changes tab lists every finding with an impact filter, and the Routes tab draws the endpoint topology with per-endpoint field counts.

FEATURES
• Breaking / Review / Compatible classification with remediation
• Detects removals, type narrowing, and new required fields
• Live release score you drive by waiving resolved changes
• Impact-filtered findings list
• Endpoint topology map

PREMIUM BY DESIGN
One-time purchase. No account, no ads, no analytics, no tracking, no in-app purchases, and no network access — Specverge runs entirely on your device, fully offline.


## Version history (last 2 releases)

### 1.1 — 2026-08-31

Specverge 1.1 is a focused redesign around three fast screens. The Release gate is now interactive: waive each breaking change as you plan its migration and watch the release score and ship/hold recommendation update live. Changes adds an impact filter, and Routes draws the endpoint topology. Unused assets were removed to shrink the download.

### 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.*