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Features & Capabilities
User Growth & Download Statistics
- By:
- MerciApp
- Daily users:
- 2,582 1
- Rating:
- 4.24 (33)
- Version:
- 3.98.1 Last updated: 2026-06-10
- Version code:
- 6300642
- Creation date:
- 2020-09-09
- Risk:
- Very high risk impact Moderate risk likelihood
- Permissions:
- activeTab
- alarms
- clipboardRead
- clipboardWrite
- cookies
- storage
- tabs
- management
- http://*/*
- https://*/* See more
- activeTab
- Content scripts matches:
- *
- docs.google.com
- *
- Size:
- 3.82MB
- Email:
- te*****@merci-app.com
- URLs:
- Website ,Privacy policy
- Full description:
- See detailed description
- Source:
- Firefox Add-ons Store
- Data ingested on:
- 2026-06-16
- Compare stats and ranking:
- MerciApp vs Scribens : Grammar Checker and Writing Assistant
- MerciApp vs Scribens, correcteur d'orthographe et de grammaire
- MerciApp vs Spell checker and Grammar checker by Scribens
Ranking
Other platforms
For Developers
Contact the developer
Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Permission Change History
2025-03-04: Version 3.65.2 → 3.65.3
Add Permissions: clipboardRead clipboardWrite
2024-05-28: Version 3.34.1 → 3.34.2
Add Permissions: management
User Reviews
MerciApp is praised for its effective and accurate error detection, particularly for French writing, and good privacy practices. The free version is sufficient for occasional users and the tool is practical and easy to use. However, multiple users complain about the low daily correction limit, sluggish performance causing typing delays on Firefox, outdated or incorrect examples in tutorials, and some inaccurate alerts on slang. Additionally, some find the premium payment prompts intrusive. Overall, it is useful but has notable limitations and usability issues on Firefox. Pros
- Effective and reliable at detecting errors, helping improve text quality quickly.
- Good privacy data management as confirmed by discussions with the founders.
- Free version usable and helpful for occasional users.
- Easy to use and practical for improving French writing.
Cons
- Limited daily free quota (600 words) too low for occasional writers to correct small articles properly.
- Somewhat slow and heavy extension causing text input lag on Firefox, unlike on Chrome.
- Examples used in tutorials contain outdated or incorrect language usages, reducing credibility.
- Issues with false positives on slang or abbreviated words leading to some inaccurate corrections.
- Aggressive premium payment prompts locking the screen reported by at least one user.
Recent reviews
by Fi*****, 2025-06-11
by 天灭*****, 2025-02-13
En version gratuite, pourquoi pas, mais évitez de payer pour un programme qui n'est pas à la hauteur de ses engagements !
Repérés dans les exemples du Tuto n° 1 permettant de se familiariser avec le programme (le seul que j'ai visionné) :
– "Suite à" est l'équivalent du "Quittez pas" au téléphone : pas très professionnel. Préférer "À la suite de" ou "Pour faire suite à".
– "aura l'opportunité" : opportunité désigne le caractère de ce qui est opportun, de ce qui vient à propos. Dans le contexte du texte proposé, il faut utiliser "occasion", qui a un sens différent.
– "Je souhaiterais" : on parle bien ici d'écrit professionnel, le conditionnel de politesse n'y a donc pas sa place. Pour des écrits pro efficaces, rien de tel que le présent. "Je souhaite que" est tout aussi respectueux.
Comment être crédible lorsque les textes qui servent d'exemple sont mal écrits (et non soulignés) ?
À noter également qu'il ne tient pas compte des dernières rectifications orthographiques comme si ce programme avait été conçu il y a plus de 30 ans.
by Fi*****, 2024-12-19
Is MerciApp Safe?
Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.
MerciApp requires a lot of sensitive permissions. Exercise caution before installing.
Risk impact analysis details
- Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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- Medium ******* ***** *********** ***** ****** ********* *** ***** ********* **** **** ************** *** ********
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.
MerciApp is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.
Risk likelihood analysis details
- High This extension was recently updated in the past month. New updates may not be stable or safe.
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- Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
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