Neat Nest: JSON & Text Editor

Neat Nest is a text editor that turns into a JSON viewer, formatter and compare tool, built on three principles: privacy first, then reliability, then simplicity. It is free to open, edit, format and check JSON and text. Pro, one payment, adds the Tree and Table views, Compare and the editor themes. Everyone who bought Neat Nest keeps every tool.

Private
• No internet access and no storage access: it reads only the files you open with it
• The only permission is Google Play billing, for Pro
• No ads, no account, no tracking. Works fully offline

Reliable
• Saves back to the file you opened, or Save as a copy
• Keeps numbers exactly as written, even very large ones, through format, sort and tree edits
• Warns about duplicate keys and numbers that other apps may round
• Never adds a byte order mark, keeps your line endings, and does not escape letters or emoji
• Your open documents are kept on the phone as you type, so switching apps never loses an edit

Simple
• Open a file and it is there, with the exact line and column of the first JSON error
• No subscription: Pro is one payment, yours for good
• Light, dark and black themes, large touch targets, TalkBack labels and text up to 200 percent

One editor for text and JSON
• Opens JSON, plain text, logs, CSV, Markdown, YAML, XML and config files
• Line numbers, find and replace, undo and redo, word wrap or sideways scrolling
• A key row over the keyboard with braces, brackets, colon, comma, quote and Tab
• Invalid JSON still opens as text, and one tap on the status bar takes you to the error
• The path of the value under the cursor, ready to copy

Tree and Table views
• Tree: open and close objects and arrays, edit any value, delete, copy a value or its path
• Table: arrays of objects as rows and columns, nested keys as dotted columns, sort by any column
• Format, Compact and Sort keys in one tap, with 2 or 4 spaces

Compare two JSON files
• Key order and formatting do not count as a change
• Array items are lined up by value, so an inserted item does not mark the rest as changed
• Counts of added, removed and changed values, with Previous and Next to step through each difference
• Side by side on a tablet or in landscape, one aligned list on a phone. Every change is marked with a sign as well as a colour

JSONPath filter
Filter the Tree or Table with queries like $..id or items[?(@.price > 10)], with slices, wildcards, deep search and regular expressions.

Free and Pro
Opening, editing and saving JSON and text, Format, Compact and Sort keys, the error check, find and replace, and the Light, Dark and Black looks are all in the free part. Pro, one payment, adds the Tree and Table views with the JSONPath filter, Compare, and 20 popular editor themes. Everyone who bought Neat Nest keeps every tool, Pro included, with nothing more to pay.

Opens from other apps
Pick Neat Nest when you open a text or JSON file from your file manager, email or cloud storage app, share text or a file to it, or select JSON in any app and choose Open in Neat Nest. Two home screen widgets give quick actions and your recent files, and the app icon has shortcuts.

Big files
Files up to 20 MB open. Up to about 800 KB the Text view edits everything; larger files scroll in a read only Text view, and you edit their values in the Tree view.

User guide and bug reports: zanoshky.github.io/neat-nest-app