# Anvil: Developer Tools — 17 offline developer tools

> 17 offline developer tools (iPhone/iPad app by 武汉回到未来科技有限公司.)

- Source: https://appshunter.io/ios/app/anvil-developer-tools/id6785700389 (this page in markdown: same URL + `.md`)
- Developer: [武汉回到未来科技有限公司](https://appshunter.io/developer/1891400712)
- Category: Developer Tools, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 6 MB
- Languages: American English, French (France), German (Germany), Italian, Japanese, Korean, Brazilian Portuguese, Russian, Chinese (Simplified, China), European Spanish
- Released: 2026-07-06
- Data updated: 2026-07-22
- User reviews in markdown: https://appshunter.io/ios/app/anvil-developer-tools/id6785700389/reviews.md

## What is Anvil?

Anvil is a pocket-sized toolbox of 17 everyday developer utilities. Every tool processes its input on your device. No account, no ads, no tracking, and no app backend.

FORMAT & DECODE
• JSON Formatter — beautify, minify, validate
• Base64 — encode / decode text
• URL — percent-encode / decode
• JWT Decoder — inspect header & payload (local only)

GENERATE
• UUID — batch v4 identifiers
• Hash — MD5 / SHA-1 / SHA-256 / SHA-512
• Random String — passwords & tokens
• QR Code — share or save

CONVERT
• Number Base — bin / oct / dec / hex
• Unix Time — epoch ↔ human date
• Cron — explain expressions
• Unicode — text ↔ \u escapes

TEXT
• Regex Tester — live matches & groups
• Text Diff — compare two snippets
• Case Converter — camel / snake / kebab …
• Text Analyzer — characters, words, lines
• List Comparer — intersection, union & diff

SMART PASTE
Copy something, open Anvil, and it points you to the right tool with your content already filled in.

PRIVACY FIRST
Tool inputs are processed on-device and are never uploaded. Anvil has no account, ads, analytics, or app backend. Optional Pro purchase and restore use Apple StoreKit.

ANVIL PRO — one-time unlock, no subscription
• Share Extension — run tools on text shared from any app
• Shortcuts & Siri
• Clipboard History
• Optional Smart Paste auto-open (off by default)
One-time purchase, no subscription.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Anvil Pro | $4.99 | one-time |



## Version history (last 3 releases)

### 1.0.2 — 2026-07-18

Refined Smart Paste guidance, improved localization, a refreshed app icon, and reliability fixes across developer tools.

### 1.0.1 — 2026-07-12

Improved Smart Paste recommendations and navigation, expanded Shortcuts and share workflows, and made Pro access and purchase restoration more reliable. Also includes performance, compatibility, and localization refinements.

### 1.0 — 2026-07-06

No release notes.

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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 2026-07-22.*