MerciApp. Mistakes don't say thank you

Last updated on 12 May 2026

MerciApp is a new generation spell checker integrates with your browser for neat and faultless online writing. A smart proofreader for French that will make for you the hunt for mistakes and help you improve your style.

Having arrived three years ago in the highly selective market for editing and editing software dominated by Antidote or “Grammarly”, MerciApp has evolved well and offers an amazing user experience as well as excellent integration with your usual online tools. You will get corrections for grammar, spelling, conjugation and style mistakes while you write on Gmail, Twitter, LinkedIn, outlook and all your other favorite sites.

The app now offers with the brand new Merci App Assist artificial intelligence features to help you automatically correct, improve style and reformulate your writing on the fly.

A simple extension to give your browser an effective corrector

Anyone who has never regretted not having carefully read an email before sending it, raise their hand. Online writing, immediate communication, sometimes makes you forget salutary reflexes such as that of rereading yourself carefully.

For its image, for its credibility, nothing worse than a big spelling mistake in an email or a post on a social network or blog.

MerciApp will take care of ensuring that your writing complies with the basic rules of style, spelling and grammar.

How to use MerciApp to correct your texts?

The tool takes the form of an extension to be installed on your web browser, such as Google Chrome. MerciApp works from your browser and defines itself as much more than just a grammar and spell checker. You can install it on Chrome, Firefox or Edge. Once in place, the magic happens. When you write a text from the browser, the MerciApp smart corrector will point out any errors identified. With one click, you will have access to correction proposals but also explanations. Grammar rules, style tips, alerts about possible confusions, MerciApp helps you to progress continuously through contextual explanations. You will be able to use MerciApp to improve your texts and write without mistakes in real time.

You can also go to the MerciApp website to correct any type of text regardless of its length.

Correcting mistakes is good, understanding them and learning to stop doing them is even better.

Discreet, a small dot appears at the bottom of your text to be corrected. Red, there are still mistakes. Green, everything's OK. Thus, before sending an email, publishing content or sharing a MerciApp document will play the quality controllers of all your writings.

A powerful text analysis engine integrated with all your online tools

MerciApp in its pro version is particularly effective. The online software revises in real time grammar and spelling, semantics and context, style and typography.

Under the hood the service claims state-of-the-art technology and impressive numbers.

Integration with your usual online tools is seamless. Once the application extension is installed in your browser, everything is done automatically. Several hundred sites and services are supported and among them the most common (all social networks, Gmail, Google docs …).

Please note that the application also offers on its website a more classic correction tool for all your documents. You have a built-in word processor available but above all you will be able to upload all your files in text format. Texts that you can keep online in a kind of virtual library.

MerciApp Assists a smart proofreader for French with iA in it.

The new writing support features that the app now offers are really useful and interesting to help you improve your writing.

Functions that you enable or not in the preferences of the application but which it would be really a shame to deprive you of. MerciApp Assist first allows smart self-correction. MerciApp analyzes the context of your sentences, and automatically corrects your mistakes with the most appropriate suggestions. It is always necessary to check manually but the time saving is considerable.

 

But the real one MerciApp Assit’s added value is its smart reformulation function. Welcome to artificial intelligence by writing assistant. Just highlight a part of your text and click on the little magic wand that appears. The application then offers you three possible automatic actions: shorten, improve the style, make it more sustained.

The result is displayed immediately and it will replace your original text with a simple click. Simple and effective. It is conceivable that further orders will complement these first three proposals in the future.

Improve your writing and track your progress

The explanations provided by the application in case of fault or error, the proposed reformulations, access to a smart dictionary, will make you quickly improve in grammar, spelling, conjugation almost without realising it.

You will be able to visualize this progress via a very fine statistics module that will allow you to see the number of mistakes you avoid each day thanks to MerciApp and the time you save. But the most interesting thing from my point of view is that the smart proofreader will also reveal to you the most frequent mistakes found in your writings. Ideal to work on your weaknesses.

Without exceeding in the finesse of its corrections (at least for the moment), a professional tool like Antidote, MerciApp is an excellent service to help you improve your writing on a daily basis for which I predict a bright future.

 Le spell checker MerciApp offers a somewhat limited free version but which can still be used to identify, for example, errors of inattention. You can test the full version without limit for free for 30 days. I advise you. You'll soon be able to say goodbye to mistakes.