Best Formatter Apps

241+ iOS apps curated and reviewed

4.5 avg rating

19 free apps

Updated November 2026

From beginner-friendly picks to power-user tools, our formatter list covers 241+ iPhone apps updated through November 2026. Compare ratings, prices, and screenshots in one place.

Compare top Formatter Apps (November 2026)

#	App	Price	Rating	Ads	In-App Purchases	Updated
1	JSON Formatter	Free	3.5★ (4)	No	No	May 2026
2	Formatter	Free	5.0★ (2)	No	No	May 2026
3	JSON FORMATTER PRO	Free	4.9★ (60)	No	No	Oct 2026
4	Nellie Screenplay Formatter	Free	5.0★ (1)	No	No	Oct 2026
5	DateTime - Date Formatter	Free	5.0★ (1)	No	No	Oct 2026
6	Case Formatter	Free	5.0★ (1)	No	Yes	May 2026
7	Date Formatter	Free	5.0★ (1)	No	No	May 2026
8	Magical Text Formatter	Free	5.0★ (1)	No	No	May 2026

Top Picks for Formatter

#1

JSON Formatter by Robert Surrette

Pretty Print JSON

Editor's Choice

📊 Productivity

3.5(4 ratings)

Free

JSON Formatter screenshot 1

JSON Formatter screenshot 2

JSON Formatter screenshot 3

This utility helps you format and view JSON strings with clear, readable indentation. It offers both light and dark themes for a comfortable viewing experience.

#2

Formatter by Mew Sang Lim

Json Formatter

Strong Contender

5.0(2 ratings)

Free

Formatter screenshot 1

This utility app transforms messy JSON data into a clean, readable format. It eliminates the frustration of scrolling and eye strain associated with poorly formatted code, simplifying data analysis.

#3

JSON FORMATTER PRO by Creative Greenlight LLC

Syntax Error Highlighting

Worth Considering

4.9(60 ratings)

Free

JSON FORMATTER PRO screenshot 1

JSON FORMATTER PRO screenshot 2

JSON FORMATTER PRO screenshot 3

JSON FORMATTER PRO screenshot 4

JSON FORMATTER PRO screenshot 5

JSON FORMATTER PRO screenshot 6

This utility app simplifies JSON formatting and validation. It offers syntax error highlighting and allows users to type or paste JSON data for easy manipulation and export. Ideal for developers and anyone working with JSON on the go.

More Formatter apps to explore

Nellie Screenplay Formatter

Nellie Screenplay Formatter

Nellie Screenplay Formatter

by James Bailie

Transform plain text into a professionally formatted screenplay. Supports US Letter and A4 paper sizes with automatic scene numbering and tamper-resistant watermarks. Export your script as a PDF.

Plain text to formatted screenplay conversionPDF exportUS Letter and A4 paper size support

📊 Productivity

DateTime - Date Formatter

DateTime - Date Formatter

DateTime - Date Formatter

Full Unicode LDML Reference

This app lets you experiment with date formatting using Unicode LDML specifications. Preview your formatted dates with the current time and easily share your custom format strings with others.

Test arbitrary date formatsPreview with current timeFull Unicode LDML reference

Quick text case formatter

Instantly convert text to various cases like UPPERCASE, lowercase, Title Case, and Sentence case. Features auto-paste from the clipboard and a clean, minimalist interface to boost your text formatting efficiency.

Multiple text case conversionsAuto Paste from clipboardMinimalist UI

Test ISO 8601 date time format

This utility helps developers easily test and understand date and time format strings. It allows for setting custom dates, time zones, and supports over 689 locales for localized formatting.

Test any date/timeSet different time zonesSupport for 689+ locales

Magical Text Formatter

Magical Text Formatter

Magical Text Formatter

Text that looks intentional

Elevate your social media posts with unique and professional-looking text. This app offers a variety of stylish fonts and formatting options to make your content stand out and capture attention.

Variety of beautiful fontsSimple formatting optionsLinkedIn-ready styles

Curly: JSON Viewer & Formatter

Curly: JSON Viewer & Formatter

Curly: JSON Viewer & Formatter

JSON Viewer browser extension

This browser extension automatically formats and highlights raw JSON text on webpages, making it instantly readable and interactive. It's designed to boost productivity for developers by simplifying data inspection and API debugging.

Automatic JSON detectionSyntax highlightingInteractive JSON view

🛠️ Developer Tools

FrameFit: Photo Formatter

FrameFit: Photo Formatter

FrameFit: Photo Formatter

Perfect Photos, Every Time

📷 Photo & Video

AddressGO - Address Formatter

AddressGO - Address Formatter

AddressGO - Address Formatter

Auto-Format: Visa & Shipping

This utility app instantly formats local addresses into standardized English fields for online forms, visa applications, and international shipping. It intelligently splits address lines and offers multiple English views, including options for strict character limits.

Split Line 1 / Line 2 instantlyThree address views (Full English, Short English, Original)Landmark and company name translation

free with in-app purchases

FormatMyDate - Date Formatter

FormatMyDate - Date Formatter

FormatMyDate - Date Formatter

Date Formatter with References

Easily format dates and times across your Apple devices. This app provides an instant playground for date formatting, a comprehensive symbol table based on LDML standards, and common format examples. Enhance productivity for developers, content creators, and casual users.

Universal app for iPhone, iPad, and MacBookInstant date formatting playgroundComprehensive LDML symbol table

🛠️ Developer Tools

free with in-app purchases

XML Viewer: Editor & Formatter

XML Viewer: Editor & Formatter

XML Viewer: Editor & Formatter

XML Beautifier, Diff & CSV

JSON Brace: Viewer & Formatter

JSON Brace: Viewer & Formatter

JSON Brace: Viewer & Formatter

Pretty-print & explore data

This tool automatically formats and navigates JSON data directly within Safari. It offers smart detection, theme switching, and keyboard shortcuts for efficient data exploration. An optional Pro upgrade unlocks advanced features like lightning-fast search and custom expansion.

Automatic JSON formattingExpand/collapse JSON objects and arraysLight and dark theme switching

🛠️ Developer Tools

NoteFormat - Expense Formatter

NoteFormat - Expense Formatter

NoteFormat - Expense Formatter

Flexible Expense Import/Export

📊 Productivity

Structly - JSON Formatter

Structly - JSON Formatter

Structly - JSON Formatter

JSON Viewer & Tables

This tool enhances your browsing experience by transforming raw JSON data into clear, readable views directly within Safari. It offers effortless formatting, advanced search, and versatile export options, all while prioritizing user privacy with on-device operation and no data collection.

Effortless JSON formattingSyntax highlighting and collapsible sectionsLine numbers for reference

🛠️ Developer Tools

JSON Viewer & Formatter

JSON Viewer & Formatter

JSON Viewer & Formatter

Validate,Beautify,Compare JSON

Format, validate, and compare JSON data offline on your iPhone or iPad. This tool offers a tree view, search functionality, and custom themes for efficient data management. Export JSON to various formats and handle large files smoothly.

Beautify & Minify JSONImport JSON files or paste from clipboardExport JSON to CSV, XML, YAML

free with in-app purchases

JSONCraft - Editor & Formatter

JSONCraft - Editor & Formatter

JSONCraft - Editor & Formatter

Smart and Elegant JSON Editor

🛠️ Developer Tools

JSON Formatter Simple Parsing

JSON Formatter Simple Parsing

JSON Formatter Simple Parsing

Parse JSON Strings and Files

🛠️ Developer Tools

Jeyso: JSON Diff & Formatter

Jeyso: JSON Diff & Formatter

Jeyso: JSON Diff & Formatter

Master Your Data Structure

🛠️ Developer Tools

FAQ about Formatter

What are the best formatter apps for iPhone?

JSON Formatter tops our formatter apps ranking as of November 2026, with a 3.5-star average from 4 App Store ratings, and it's free to download.

Are there free formatter apps for iPhone?

Yes — 19 of the top formatter apps we rank are free to download, including JSON Formatter and Formatter.

Does JSON Formatter have ads or in-app purchases?

JSON Formatter has no ads and has no in-app purchases, according to its App Store listing as of November 2026.

How many formatter apps are on the App Store?

We track 241+ formatter apps on the iOS App Store as of November 2026, ranked by rating, recency, and analysis of real user reviews.

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