# Anvil vs Caliope

The clearest difference is update cadence: Anvil at every 5 days against Caliope's every 3 weeks. Caliope's advantage is device support (6 vs 3). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Anvil sells 3 in-app purchases, starting at $3.99 per month and Caliope sells 3 in-app purchases, starting at $49.99 per year. Whichever you choose, the download price is not the number that matters.

Anvil ships an update every 5 days, Caliope every 3 weeks. The most recent releases landed on October 31, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Anvil | Caliope |
| --- | --- | --- |
| 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 | **Every 5 days** | Every 3 weeks |
| Monetization | Freemium | — |
| Size | 96 MB | 99 MB |
| Requires iOS | 26.0 | 26.0 |
| Devices | iPhone, iPad, Mac | **iPhone, iPad, Mac, Apple TV, Apple Watch, Vision Pro** |
| Age rating | 9+ | 4+ |
| Developer | [Alex Javier Rivas Martinez](https://appshunter.io/developer/1866632509) | [David Villalobos Cambronero](https://appshunter.io/developer/6778513085) |

## What reviewers say

### 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 |


### Caliope

[App page](https://appshunter.io/ios/app/caliope-sql-client/id6779292872)

**Features:** Family Sharing, Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calíope Pro | $49.99 | per year |
| 60-day Trial | Free | one-time |
| Calíope Pro | $49.99 | one-time |


## Frequently asked questions

### Is Anvil free?

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

### Is Caliope free?

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

### Do Anvil or Caliope have ads?

Neither Anvil nor Caliope shows ads.

### Which is updated more often, Anvil or Caliope?

Anvil ships an update every 5 days, and Caliope every 3 weeks. Most recently, Anvil was updated on October 31, 2026 and Caliope on October 25, 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.*