# Anvil - Dev Toolset — JSON, JWT, Base64 & more

> JSON, JWT, Base64 & more (iPhone/iPad app by Alex Javier Rivas Martinez.)

- Source: https://appshunter.io/ios/app/anvil-dev-toolset/id6775051027 (this page in markdown: same URL + `.md`)
- Developer: [Alex Javier Rivas Martinez](https://appshunter.io/developer/1866632509)
- Category: Developer Tools, Productivity
- Price: Free with in-app purchases
- Age rating: 9+
- Requires: iOS 26.0 · 56 MB
- Languages: American English, Dutch, French (France), German (Germany), Hindi, Japanese, Korean, Polish, European Portuguese, Chinese (Simplified, China) and 2 more
- Released: 2026-06-04
- Data updated: 2026-08-30
- User reviews in markdown: https://appshunter.io/ios/app/anvil-dev-toolset/id6775051027/reviews.md

## What is Anvil?

Anvil is a native developer toolkit for macOS, iPhone, and iPad, built to make everyday formatting, encoding, conversion, and inspection tasks faster.

Work with JSON, Base64, URLs, timestamps, JWTs, UUIDs, hashes, regular expressions, strings, SQL, CSV, YAML, QR codes, and more from one focused app. Instead of jumping between web utilities, Anvil keeps common developer workflows close at hand in a fast, native interface.

Use Anvil to:
Format, validate, repair, and inspect JSON.
Encode and decode Base64, URLs, HTML entities, and escaped strings.
Convert timestamps, number bases, CSV, YAML, and other structured data.
Decode JWTs and inspect token payloads.
Generate UUIDs, ULIDs, QR codes, hashes, sample text, and formatted code.
Analyze strings, compare text, and clean up data while building or debugging.

Anvil is designed for developers who want practical tools without clutter. Whether you are debugging an API response, preparing test data, checking a token, formatting a query, or converting values during development, Anvil gives you a polished native workspace for the small tasks that happen all day.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Terms and Conditions: https://anvilmac.com/terms
Privacy Policy: https://anvilmac.com/privacy

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Anvil Pro Monthly | $3.99 | per month |
| Anvil Pro Yearly | $37.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Anvil Pro Lifetime | $79.99 | one-time |



## Version history (last 4 releases)

### 1.3.0 — 2026-07-03

Command Center leads this update: a keyboard-first launcher for finding tools, commands, shortcuts, widgets, and App Intents.

Next is Localization Inspector: review Android, Apple, and web localization files, compare language coverage, catch placeholders and plurals, and export safe ZIP patches.

We also added SSH Key Generator, OTP/TOTP Generator, PHP Array to JSON, PHP Serialize/Unserialize, IP/Subnet Calculator, cURL to Code, AI improvements for Log Formatter, native widget settings, and release polish.

### 1.2.0 — 2026-06-15

This update spotlights Logs Formatter, a native way to clean up noisy console, build, and runtime output so you can scan errors, warnings, timestamps, and metadata faster. We also added Certificate Decoder, Signing Inspector, and a TOML tool, plus refinements across JSON, UUID, Backslash Escape, and quick-access widgets.

### 1.1.1 — 2026-06-08

Anvil is now fully localized for 10 additional languages. This update also polishes iPhone and iPad tool layouts with cleaner input/output panes, better spacing, clearer Settings navigation, improved accessibility labels, localized errors, and small tool output fixes.

### 1.1.0 — 2026-06-04

No release notes.

## Related topics

[devbuddy dev tools](https://appshunter.io/ios/topics/devbuddy-dev-tools) · [anvil app](https://appshunter.io/ios/topics/anvil-app)

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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 2026-08-30.*