Free Local Check No Login Required Cross Platform Actionable Diagnostics

Find localization bugs before your users do.

Install the CLI and run forthwith check. It scans your localization files on your machine, finds concrete issues, and tells you exactly where to look—free, with no account or configuration required.

Install the CLI Explore forthwith check

Your files stay local. Sign in only when you choose a paid fix or translation.

Forthwith translate — real CLI run

24 seconds · no audio

Useful before you pay for anything

Earn trust with the first command

Forthwith check gives you a complete, local report first. You decide whether to fix findings yourself, let Forthwith repair supported issues, or use the full translation workflow.

Private by default

The check runs on your machine. It does not contact the Forthwith API or require an account.

Find real defects

Catch missing keys, malformed files, placeholder mismatches, plural gaps, duplicates, and untranslated values.

Stay in control

Repair findings manually, or initialize a project and use the paid --fix workflow for supported issues only.

Run your first check

Purpose-built, not magic

Why not build this with an agent?

You can. Claude Skills, coding agents, and Xcode agents are capable alternatives. Forthwith is the maintained, purpose-built option when you want the same repeatable localization workflow and validation across platforms without maintaining it yourself.

Capability Build/Maintain Your Own General or Platform Agent Forthwith
One-command workflow Custom setup Custom setup Yes
Repeatability Custom setup Custom setup Yes
AI-powered translation Custom setup Yes Yes
Automatic localization validation Custom setup No Yes
Multi-platform support Custom setup Platform-limited Yes

One command, four guarded steps

From source change to reviewable diff

  1. 01

    Detect changes

    Find only new and modified source strings.

  2. 02

    Translate

    Generate translations with framework-aware context.

  3. 03

    Validate

    Check placeholders, plurals, keys, and structure.

  4. 04

    Write files

    Update native resource files for Git review.

Changed strings only

Keep recurring runs focused and avoid retranslating unchanged content.

12 new · 3 changed

Localization contracts intact

Preserve placeholders, interpolation tokens, plural forms, and output structure.

%@ · {count} · one/other

Reviewable Git diffs

Write updates into the files your project already uses, ready for normal review.

git diff -- locale/

One workflow across your stack

iOS
Android
Flutter
React
Phoenix
React Native
go-i18n

Simple, Transparent Pricing

Pay for words processed, translate only what changed, and avoid per-language platform fees.

Pay for words processed

Translate only what changed

No per-language platform fees

Occasional

Flex

$0.89 / 1K words

Pay as you go

Get Started
Most Popular

Ongoing

Standard

$49 / mo

100K words / mo included

Overage: $0.65 / 1K

Get Started

Initial full localization

Launch

$129 / mo

300K words / mo included

Overage: $0.55 / 1K

Get Started

Frequently Asked Questions

Ready to make localization a repeatable command?

Translate only what changed, validate production-sensitive syntax, and review the diff before you commit.

Get Started Talk to Us