---
title: Sort Your Wrong Answers Into the Mistake That Caused Them — Free
description: Problem attempts, error type, and next practice date. Runs locally with no API key or account.
category: learning
last_verified: 2026-09-13
freshness: green
published: 2026-09-12
canonical_url: https://gratis-ai.pages.dev/articles/math-error-pattern-log.html
companion_app_url: https://gratis-ai.pages.dev/apps/math-error-pattern-log.html
reading_time_minutes: 4
tags: learning, math, error, pattern, local, no-account
---

# Sort Your Wrong Answers Into the Mistake That Caused Them — Free

Problem attempts, error type, and next practice date. Runs locally with no API key or account.

**Free and complete.** This guide is a standalone free tool — no account, no card, anywhere. The only paid option is one optional extra outcome: $4 one-time. Nothing in the free tier is gated.

## Who it's for

Anyone seeking practical 100% free AI workflows — no paid API keys, credit cards, or subscriptions

## What's free

- Any number of wrong answers sorted
- Counts per mistake type with a sample line
- Copy the log as text
- Stateful link to any result

## Optional paid add-on

**$4 one-time.**

- Printable card with each lane boxed for the next problem set — estimate: 11 minutes saved per set, basis: 5 mistakes re-tallied at ~2.2 minutes each
- Saved local history across sets — estimate: 8 minutes saved per set, basis: re-entering 5 mistakes at ~95 seconds each

## Sources & verification

- Tool: GratisAI local-first card builder
- Primary source: the free tool itself (local-first, no external dependency)
- Last verification: 2026-09-13 (green)

## Use it

- Interactive guide: https://gratis-ai.pages.dev/articles/math-error-pattern-log.html
- Companion app: https://gratis-ai.pages.dev/apps/math-error-pattern-log.html
- This machine-readable mirror: /mirrors/math-error-pattern-log.md

*Generated free at https://gratis-ai.pages.dev/articles/math-error-pattern-log.html — every guide on GratisAI is a complete, working tool. $0, no account, no card, anywhere.*