# FormatterKit/FormatterKit

`stringWithFormat:` for the sophisticated hacker set

Repository: https://github.com/FormatterKit/FormatterKit
Canonical: https://ross.abutalabs.com/products/formatterkit
Language: Objective-C
License: MIT
License Family: permissive
Archived: true
Last push: 2019-07-07T22:04:27+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 5518, "days_push": 2614, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, archived
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 4083, forks 440 (observed 2026-08-28T04:08:34.466331+00:00)

## What it is
FormatterKit is a collection of well-crafted NSFormatter subclasses for Objective-C/Swift that format addresses, arrays, colors, distances, names, and time intervals into localized strings. It is no longer maintained, as Apple's Foundation frameworks now cover most of its functionality.

## Use cases
- format relative time intervals like '3 days ago' in iOS apps
- display arrays as comma-delimited lists with 'and'
- format CLLocation distances in metric or imperial units
- format personal names according to locale conventions
- format addresses from components
- format colors as hex or rgb strings

## When to choose
- supporting older iOS/macOS versions that lack Apple's modern formatter APIs
- maintaining an existing project already using FormatterKit

## When to avoid
- starting a new project targeting iOS 13+/macOS 10.15+, where Apple's NSListFormatter, NSRelativeDateTimeFormatter, and NSMeasurementFormatter cover the same needs
- expecting bug fixes or updates, since the repository is archived

## Facets
- artifact type: library
- maturity: abandoned
- function: internationalization, serialization
- domain: developer-tools, mobile-development
- platform: -
- tags: nsformatter, objective-c, string-formatting, deprecated, cocoa, localization, ios, macos, swift

## Member repositories
- FormatterKit/FormatterKit (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:34.466331+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:23:24.356342+00:00, confidence not recorded.
  - readme: https://github.com/FormatterKit/FormatterKit (fetched 2026-08-28T04:08:34.466331+00:00, sha 66da10cedca4)
- Data as of 2026-08-30T08:39:29.467469+00:00.