French Phrase
Quelle appli je devrais utiliser ?
Meaning
Literally, “Which app should I use?” The speaker is asking for a recommendation about a mobile or computer application. The sentence is informal because it uses the colloquial ‘appli’ and avoids the formal inversion ‘devrais‑je’.
When to use
Use this phrase when you need advice on choosing a software tool, especially in casual conversation with friends, classmates, or coworkers. It works well in both spoken French and informal written messages (e.g., chat, email).
✦Grammar Breakdown
Quelleapplijedevraisutiliser?
Quelle (interrogative adjective)
Used before a feminine singular noun to ask 'which' or 'what'. It agrees in gender and number with the noun.
appli (colloquial noun)
Short for 'application', a feminine noun. In formal speech use 'application'.
je (subject pronoun)
First‑person singular pronoun, placed before the verb in declarative order.
devrais (conditional of devoir)
The conditional present of 'devoir' expresses a polite suggestion or recommendation: 'should'.
utiliser (infinitive)
Infinitive verb that follows the conditional verb 'devrais' to indicate the action.
Question formation (informal)
In spoken French the interrogative can be formed without inversion; intonation or a question mark signals the question.
🗨In Conversation
Quelle appli je devrais utiliser ?
Which app should I use?
Tu devrais essayer Notion, c’est super pour organiser tes notes.
You should try Notion, it’s great for organizing your notes.
✕Common Mistakes
Quel appli je devrais utiliser ?
‘Appli’ is feminine, so the interrogative must be ‘Quelle’, not ‘Quel’.
Quelle appli devrais je utiliser ?
When using inversion, a hyphen is required: ‘devrais‑je’. Without it the sentence looks ungrammatical.
Quelle appli je devrais utiliser le ?
If you want to ask about a specific function, you might need a noun: ‘utiliser pour quoi ?’. The infinitive alone is correct here.
↔Alternatives
Quelle application devrais‑je utiliser ?
Which application should I use?
Quel logiciel devrais‑je choisir ?
Which software should I choose?
Quel outil me conseillerais‑tu ?
Which tool would you recommend to me?
Cultural Tip
‘Appli’ is a very common slang term among younger speakers and in tech circles. In a formal email or a business meeting, prefer ‘application’. Also, French questions can be formed without inversion when the tone is conversational; however, written French often prefers the inverted form ‘devrais‑je’ for clarity.

