When deciding between “in development” and “under development,” both expressions can be correct, but they are not always used in exactly the same way. The choice depends on what you want to emphasize: the stage of progress or the active process of being developed. Understanding this small difference can make your English sound more natural and precise.
The phrase “in development” commonly describes something that is still being created, planned, tested, or improved. “Under development” also means that something is currently being developed, but it often emphasizes that development work is actively happening. Both expressions appear in everyday, technical, business, and academic English, so learning when to use each one is useful for ESL learners and anyone who wants to avoid common grammar mistakes.
Quick Answer
“In development” and “under development” are both correct. Use “in development” to describe something as being at a development stage. Use “under development” when emphasizing that something is actively being developed or worked on. In many contexts, they can be used interchangeably.
Why Do People Confuse “In Development” and “Under Development”?
People confuse these phrases because they communicate a very similar basic idea: something is not finished yet.
For example:
- The new software is in development.
- The new software is under development.
Both sentences tell us that the software is still being developed.
The difference is mainly one of emphasis and usage rather than a completely different meaning.
What Does “In Development” Mean?
“In development” means that something is currently at a stage where it is being created, designed, tested, or improved.
It often describes the status or stage of a project, product, idea, or system.
Examples:
- The new game is in development.
- The company has several products in development.
- A new treatment is in development.
- The project is still in development.
Here, the phrase works almost like a status label.
Is “In Development” Correct?
Yes. “In development” is grammatically correct and very common.
It is especially natural when talking about projects, products, software, technology, films, treatments, and plans.
What Does “Under Development” Mean?
“Under development” means that something is currently being developed or worked on.
The word “under” highlights the process or activity happening to the subject.
Examples:
- The website is under development.
- A new highway is under development.
- The system is currently under development.
- Several new features are under development.
It can sound slightly more formal or technical in some contexts.
Is “Under Development” Correct?
Yes. “Under development” is also grammatically correct.
It is particularly useful when you want to emphasize that development work is actively taking place.
In Development vs. Under Development: Comparison Table
| Expression | Main Meaning | Main Focus | Example |
|---|---|---|---|
| In development | At the development stage | Status or stage | The app is in development. |
| Under development | Currently being developed | Ongoing development | The app is under development. |
| In development | Still being created or improved | Progress | The product is in development. |
| Under development | Development work is happening | Process | The product is under development. |
When Should You Use “In Development”?
Use “in development” when you are describing the current stage of something.
It is particularly natural with phrases such as:
- a product in development
- a game in development
- a project in development
- technology in development
- a treatment in development
- a film in development
Example:
“The company has three new products in development.”
This tells us that the products are currently being worked on and have not reached completion.
When Should You Use “Under Development”?
Use “under development” when you want to emphasize that development is currently taking place.
For example:
“The new website is under development.”
This focuses more strongly on the ongoing work being done to create the website.
It is also common in technical, business, construction, and formal contexts.
10+ Examples of “In Development” and “Under Development”
Examples with “In Development”
- The new mobile app is in development.
- Several games are currently in development.
- The company has a new product in development.
- A new vaccine is in development.
- The film is still in development.
- The technology remains in development.
Examples with “Under Development”
- The new website is under development.
- A new residential area is under development.
- The software is currently under development.
- Several new features are under development.
- The road project is under development.
- The system is still under development.
Examples Where Both Work
- The new application is in development.
- The new application is under development.
- The company has a new system in development.
- The new system is under development.
Both pairs are grammatically correct.
Common Mistakes
1. Thinking only one phrase is correct
A common mistake is believing that either “in development” or “under development” is always correct.
Both are legitimate expressions.
2. Using “in developments”
When talking about the general process, development is normally uncountable.
Incorrect:
Correct:
3. Confusing “under development” with “underdeveloped”
These are completely different.
Under development means something is currently being developed.
Underdeveloped means something has not reached an expected level of development.
For example:
- The software is under development.
- The region is underdeveloped.
4. Assuming “under development” always sounds better
“Under development” is not automatically more professional. In many situations, “in development” is shorter and more natural.
Memory Trick
Remember:
IN = stage
UNDER = process
If you are thinking about something’s stage, choose “in development.”
If you are emphasizing the work being done, “under development” can be a good choice.
For example:
American vs. British English
Both “in development” and “under development” are used in both American and British English.
There is no major American-versus-British grammar rule requiring one expression over the other.
Your choice should therefore depend more on context, style, and intended emphasis than on the variety of English you are using.
Similar Words and Expressions
Several related expressions can describe something that is not finished.
In Progress
“In progress” means that something has started and is currently happening.
Being Developed
This directly emphasizes the development process.
In the Works
This is more informal and often means that something is being planned or prepared.
In Production
This usually refers to something that has entered the production stage.
Under Construction
This is commonly used for buildings, roads, bridges, and similar physical projects.
Final Verdict
“In development” and “under development” are both correct.
Use “in development” when you want to describe something as being at the development stage. Use “under development” when you want to emphasize the ongoing development work.
In many sentences, either phrase will sound natural:
If you are unsure, “in development” is a clear and natural general choice, especially when describing the status of a product, project, technology, game, film, or treatment.
FAQs:
Is “in development” grammatically correct?
Yes. “In development” is a standard English expression used to describe something that is currently being created, tested, planned, or improved.
Is “under development” grammatically correct?
Yes. “Under development” is also correct. It often emphasizes that development work is actively taking place.
What is the difference between “in development” and “under development”?
The meanings overlap. “In development” tends to emphasize the stage or status, while “under development” can emphasize the ongoing process of development.
Is a project “in development” or “under development”?
A project can be in development or under development. Both are correct, although “in development” is often a simple way to describe its current stage.
Should I say “the website is in development”?
Yes. “The website is in development” is grammatically correct. “The website is under development” is also correct.
Is “under development” the same as “under construction”?
Not exactly. Under development is broader and can describe software, products, ideas, projects, and technology. Under construction is mainly used for physical structures and infrastructure.
Can “in development” describe a person?
Usually, no, if you mean that a person is being developed. The expression is mainly used for projects, products, systems, technologies, and similar things.
Remember This
- In development = at the development stage.
- Under development = currently being developed.
- Both expressions are correct.
- In development often focuses on status or stage.
- Under development can emphasize ongoing development work.
- Do not confuse under development with underdeveloped.
Conclusion
The choice between “in development” and “under development” is usually not about right versus wrong. Both expressions are correct and describe something that is still being developed. The small difference is that “in development” often presents development as a stage, while “under development” can draw attention to the work currently taking place.
For everyday English, choose the phrase that best matches your intended emphasis. If you are simply describing the status of a product, project, game, or technology, “in development” is a natural choice. When you want to highlight active development, “under development” works well too.
David Owen is a passionate writer and communication enthusiast dedicated to helping readers craft charming, witty, and thoughtful replies. Through ReplyCorner, he shares creative response ideas that make conversations engaging and memorable.
