# DayPercent vs JSON Master

The clearest difference is ads: DayPercent at none against JSON Master's shown. JSON Master's advantage is iOS requirement (15.0 vs 17.6). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. DayPercent sells 1 one-off in-app purchase and JSON Master sells 3 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

DayPercent ships an update fortnightly, JSON Master every 9 days. The most recent releases landed on October 19, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | DayPercent | JSON Master |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (5 ratings)](https://appshunter.io/ios/app/json-master-editor-and-viewer/id6757484875/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Every 9 days** |
| Monetization | — | Free with in-app purchases |
| Size | 11 MB | 41 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Clayvon Hatton](https://appshunter.io/developer/1840244914) | [Tianjin Illuso Information Technology Co., Ltd.](https://appshunter.io/developer/1864792206) |

## What reviewers say

### DayPercent

[App page](https://appshunter.io/ios/app/daypercent/id6752625122)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Goals Unlock | $4.99 | one-time |


### JSON Master

[App page](https://appshunter.io/ios/app/json-master-editor-and-viewer/id6757484875)

This offline iOS tool formats, views, validates, and converts JSON data. It supports large files and offers privacy-safe, local processing for developers needing to debug API responses or transform data formats.

**Highlights:** Offline JSON formatting and beautifying, Tree and text view for JSON visualization, Instant JSON syntax validation, JSON to CSV, XML, Excel conversion, Large file support, Import from clipboard and files

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| JSON Master Pro (Weekly) | $2.99 | per 7 days |
| Pro (Yearly) | $14.99 | per year |
| JSON Master Pro Lifetime | $17.99 | one-time |


## Frequently asked questions

### Is DayPercent free?

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

### Is JSON Master free?

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

### Do DayPercent or JSON Master have ads?

JSON Master shows ads; DayPercent does not.

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

DayPercent ships an update fortnightly, and JSON Master every 9 days. Most recently, DayPercent was updated on October 19, 2026 and JSON Master on October 24, 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.*