# JSON Master vs Niro

The clearest difference is in-app purchases: JSON Master at none against Niro's 3. JSON Master also leads on device support (3 vs 1). Niro's advantage is update cadence (every 2 weeks vs every 2 months). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Niro sells 3 one-off in-app purchases. JSON Master asks for nothing beyond the download.

JSON Master ships an update every 2 months, Niro every 2 weeks. The most recent releases landed on October 25, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | JSON Master | Niro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/niro-coding-agents/id6815434350/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Size | 5 MB | 31 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Volodymyr Sichka](https://appshunter.io/developer/1125187457) | [岩 李](https://appshunter.io/developer/6809847699) |

## What reviewers say

### JSON Master

[App page](https://appshunter.io/ios/app/json-master/id6799075435)

**Features:** Vision Pro support

**In-app purchases:** none


### Niro

[App page](https://appshunter.io/ios/app/niro-coding-agents/id6815434350)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy me a coffee | $0.99 | one-time |
| Buy me a dessert | $2.99 | one-time |
| Buy me dinner | $4.99 | one-time |


## Frequently asked questions

### Is JSON Master free?

JSON Master is free to download, with no in-app purchases.

### Is Niro free?

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

### Do JSON Master or Niro have ads?

Neither JSON Master nor Niro shows ads.

### Which is updated more often, JSON Master or Niro?

JSON Master ships an update every 2 months, and Niro every 2 weeks. Most recently, JSON Master was updated on October 25, 2026 and Niro on November 3, 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.*