# One Dev Tools vs Anvil

The clearest difference is update cadence: Anvil at every 5 days against One Dev Tools's fortnightly. Anvil also leads on device support (3 vs 1). One Dev Tools's advantage is iOS requirement (17.6 vs 26.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. One Dev Tools sells 2 one-off in-app purchases and Anvil sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

One Dev Tools ships an update fortnightly, Anvil every 5 days. The most recent releases landed on September 27, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | One Dev Tools | Anvil |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/anvil-dev-toolset/id6775051027/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 5 days** |
| Monetization | — | Freemium |
| Size | 20 MB | 96 MB |
| Requires iOS | **17.6** | 26.0 |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 4+ | 9+ |
| Developer | [Selma Lindqvist](https://appshunter.io/developer/1896618449) | [Alex Javier Rivas Martinez](https://appshunter.io/developer/1866632509) |

## What reviewers say

### One Dev Tools

[App page](https://appshunter.io/ios/app/one-dev-tools/id6768955248)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Theme Neon Violet | $1.99 | one-time |
| One Casino | $1.99 | one-time |


### Anvil

[App page](https://appshunter.io/ios/app/anvil-dev-toolset/id6775051027)

A native toolkit for developers on macOS, iPhone, and iPad that streamlines everyday formatting, encoding, conversion, and inspection tasks. It supports a wide range of data types and formats, offering a focused and fast interface for common development workflows.

**Highlights:** JSON formatting and validation, Base64, URL, and HTML entity encoding/decoding, Timestamp and number base conversion, JWT decoding and payload inspection, UUID, ULID, and QR code generation, String analysis and data cleaning

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Anvil Pro Monthly | $3.99 | per month |
| Anvil Pro Yearly | $37.99 | per year |
| Anvil Pro Lifetime | $79.99 | one-time |


## Frequently asked questions

### Is One Dev Tools free?

One Dev Tools is free to download, with in-app purchases available.

### Is Anvil free?

Anvil is free to download, with in-app purchases available.

### Do One Dev Tools or Anvil have ads?

Neither One Dev Tools nor Anvil shows ads.

### Which is updated more often, One Dev Tools or Anvil?

One Dev Tools ships an update fortnightly, and Anvil every 5 days. Most recently, One Dev Tools was updated on September 27, 2026 and Anvil on September 30, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*