Log every slip in MistakeLog as a careless or misread mistake with a short note of exactly what happened. The Patterns tab shows how many of your lost marks are careless, and the review schedule makes you practise the check until it is automatic.
How to keep a mistake journal
Whenever you get a question wrong, in homework, a quiz or a practice test, log it straight away while you still remember what happened. Enter the subject and topic, where the question came from, and choose the type of mistake: you did not know the concept, used the wrong method, made a careless slip, misread the question, forgot a fact or formula, or ran out of time. Write one line on what went wrong and one on how you will avoid it. MistakeLog suggests a fix for each type if you are stuck.
Open the Review tab every day. Redo each due question without looking at the answer, then mark Got it right to push it further out, or Missed it again to bring it back tomorrow. After five successful reviews a mistake is mastered.
Reading your patterns
The Patterns tab counts your mistakes by type, subject and topic. Concept and method mistakes mean you need to study the material again. Careless and misread mistakes mean you need a checking routine, not more content. Memory mistakes call for flashcards, and time mistakes call for timed practice. Knowing which kind costs you the most marks tells you how to spend your revision time.
Private by design
MistakeLog has no accounts and no server-side storage. Your journal stays in this browser and is saved in local storage on this device only. Use Backup to save a file you can restore on another device.
Frequently asked questions
Are careless mistakes a sign of not studying enough?
Not usually. They are more often about process: rushing, skipping steps or not re-reading the question.
What is a good checking routine?
Re-read the question, check the answer is reasonable, check signs and units, and compare with what was asked.
Does time pressure cause careless mistakes?
Often. If you log many time-related mistakes, practise timed sets.
Is MistakeLog free?
Yes. Logging, reviewing, exporting and printing are free with no sign-up.
Is my journal stored online?
No. Your entries are saved only in this browser on this device. Use Backup to keep a copy.