# .com, .dev, .app, or .io: compare the cost of keeping your domain

By [Cheapest domains](https://www.cheapest.domains/guides#editorial)

Published: 2026-09-10
Updated: 2026-09-10
Canonical: https://www.cheapest.domains/guides/com-dev-app-io-domains

> Shortlist extensions that suit the project, then compare their current renewals and ownership terms. A memorable name should also fit next year’s budget.

The name you want is taken in .com. You could change the name, add a word, or look for it under .dev, .app, or .io. Before choosing, compare the full address and its renewal bill. A short name that works well in a logo may be awkward to say aloud; an attractive registration offer may come with a recurring cost you would rather avoid.

There is no permanent price order for these extensions. The registrar and pricing tier matter, and prices can change. Start with a few names you would be happy to use, then compare their current registration and renewal terms. That gives you room to choose an address without treating the first available result as the answer.

## Start with the job the name has to do

Write a one-sentence description of the project and its audience. A command-line tool for engineers, an application for local shops, and a personal portfolio have different communication needs. The extension is part of that first impression, but the full name still needs to be understandable and easy to share.

A starting point for an extension shortlist, not a ranking

| Extension | A question to ask | Price comparison |
| --- | --- | --- |
| .com | Does this full name communicate the project clearly to a broad audience? | [Compare .com renewals](https://www.cheapest.domains/tlds/com) |
| .dev | Would an explicitly developer-oriented address help the intended audience? | [Compare .dev renewals](https://www.cheapest.domains/tlds/dev) |
| .app | Does describing the product as an app make the name clearer? | [Compare .app renewals](https://www.cheapest.domains/tlds/app) |
| .io | Does this complete name work for your audience without an explanation? | [Compare .io renewals](https://www.cheapest.domains/tlds/io) |

If none of the combinations reads well, change the part before the dot too. Adding a relevant word can produce a clearer address than removing vowels or inserting punctuation to preserve the original spelling. Keep the audience in mind: a name that makes sense to developers may need explanation when you send it to a customer in another field.

## Test the whole address before getting attached to it

Give each finalist the same quick test. Say the address once and ask a colleague to write it down without seeing it. Then show it in lowercase, as it would appear in a browser or email address. Ask what they think the project does, and note any misunderstandings.

Listen for spelling questions, missed word boundaries, and a different extension being written down. One mistake is not a scientific result, but it can reveal an issue you missed because you already know the name. If two candidates work equally well, renewal cost is a reasonable way to choose between them.

Also try the address in the places you expect to use it. Put it in a sample README heading, a support email address, and an introduction you might send to a prospective user. A long prefix that looks acceptable in a browser tab may become cumbersome in an email address. A clever word break may disappear when the address is spoken.

Keep those tests short. They are a way to catch obvious friction before buying, not a reason to spend weeks naming an unbuilt project. Once a candidate is clear, affordable, and available on acceptable terms, you have enough information to make a decision.

## Set the annual budget before comparing introductory offers

Suppose two equally suitable names have hypothetical annual renewals of $14 and $42. The difference is $28 per year. Across four renewals after the initial registration, that is $112 before comparing the first-year cost. Neither choice is automatically wrong, but the difference should be intentional.

Choose a three- or five-year horizon and write down registration, renewal, and total planning cost for each candidate. For a one-year minimum term, the basic estimate is registration + (years − 1) × renewal. The $14 and $42 renewals above are examples, not current quotes for these extensions.

A short-lived experiment may reasonably prioritize the first term. A package name, company email address, or product domain is more likely to persist. Use the [renewal-price guide](https://www.cheapest.domains/guides/domain-renewal-prices) to make the horizon explicit instead of treating all domains as one-year purchases.

Budget for the whole set of names you intend to keep. Buying four extensions for one idea creates four renewals. Decide which address will be primary and what each additional domain is for. A redirect you deliberately maintain has a clearer purpose than a name bought only because it was on sale.

## Decide whether the project needs another registered domain

A product website, documentation site, and status page do not necessarily need three separately registered names. You can use subdomains under a domain you already own, subject to the services and DNS setup you use. Creating a subdomain does not require another domain registration, though the hosting or other service you connect to it may have its own charges.

For example, a team might use its main address for the product, with docs and status subdomains for supporting services. That keeps one domain renewal to budget for. The tradeoff is that the names depend on the same parent domain, and a separate project may eventually deserve its own identity. Decide based on what you are building today and what you expect to maintain.

The same question applies to an experiment inside an existing business. If you are testing demand, a page or subdomain may be enough to start. If it becomes a standalone product, you can evaluate a dedicated name then. This can reduce the number of unused domains that accumulate around ideas you have not pursued.

## .dev and .app need working HTTPS

Google Registry states that both [.dev](https://www.registry.google/domains/dev/) and [.app](https://www.registry.google/domains/app/) are on the HSTS preload list and require HTTPS for browser connections. Plan for a valid certificate when putting a website on either extension.

For a developer, this is a deployment requirement to verify early. Make sure your hosting arrangement can provision a certificate for the custom domain and that your DNS setup supports the validation process. Test the actual hostname before announcing the address.

Do not treat an empty page or a certificate error as proof that a domain is available. A registered name may have no working website at all. Browser behavior tells you about the connection you attempted, not whether a registrar can sell you the name.

## Read the payment term, not just the annualized number

When exploring other extensions, you may encounter a multi-year minimum. An annualized comparison makes recurring scale easier to understand, but it does not tell you the amount charged upfront. A hypothetical $35-per-year price with a two-year initial term would mean $70 before additional charges for that term.

Cheapest domains retains minimum-term information and leaves the planning total uncalculated where its ordinary yearly model would be misleading. A missing total is not a zero-dollar offer. Open the term details and confirm the full quote at the registrar.

Compare renewal terms too. If one result is billed in another currency, read the original amount and treat the converted USD figure as approximate. When two offers differ by very little, tax or currency conversion can change which costs less at checkout.

## Check the exact name after narrowing the extensions

Standard .com prices do not establish whether your preferred .com name is available. The same applies to .dev, .app, and .io. Keep the pricing shortlist separate from exact-name checks, then test only the combinations you would realistically buy.

Read availability and premium status independently. An available premium name needs an exact quote; an unknown premium status should stay unknown. A failed or unsupported provider check should not remove a promising candidate as though it were confirmed taken.

Our comparison sends you to the selected registrar for final purchase terms. When a name is confirmed premium, the ordinary registration and renewal amounts are hidden from its recap because those numbers are not a suitable quote for that name. You can still use the registrar link to inspect the exact offer.

If the first label does not work, return to [Name ideas](https://www.cheapest.domains/naming) with your audience, tone, and annual budget. Ask for alternatives with distinct wording, not a long sequence of near-identical names whose only difference is the suffix.

## Use a five-line decision sheet

1. The full name and why it suits the project.
2. The selected registrar and whether its DNS workflow fits.
3. Registration, annual renewal, and the comparison’s retrieval date.
4. The planning horizon, minimum term, and any missing total or currency qualification.
5. The exact-name availability result, premium status, and final registrar quote.

Mark any unanswered item before choosing. You might have a name you like but no reliable availability result, or an affordable annualized amount whose full term has not been quoted. Resolve that missing item at the registrar instead of comparing it with a fully verified candidate as though both were ready to buy.

Our price pages cover connected registrars with fresh matching offers. Cloudflare results, when present, are limited standard-tier samples; details are attached to the source. For the final decision, keep the checkout’s exact-name quote beside your comparison and check that the name, term, and renewal rate are the ones you intended.

## Frequently asked questions

### Is .com always cheaper than .dev, .app, or .io?

No permanent price ordering should be assumed. Compare current registration and renewal amounts for each extension across covered registrars, along with minimum terms and exact-name pricing.

### Can I use a .dev or .app domain without HTTPS?

For browser access, these extensions require HTTPS because they are on the HSTS preload list. Arrange a valid certificate and verify the actual hostname before launch.

### Does an extension price prove my domain is available?

No. It describes a standard price for the extension. Check the complete domain separately, and confirm whether it is standard tier or premium.

### Should I buy all four extensions for my project?

Only if each additional name has a purpose worth its recurring cost. Decide which address is primary, calculate the combined renewal budget, and review unused names before their next renewal.

[Find an extension within your renewal budget](https://www.cheapest.domains/)

## Related guides

- [Domain renewal prices: find a domain you can afford to keep](https://www.cheapest.domains/guides/domain-renewal-prices)
- [How to choose a domain registrar for a development project](https://www.cheapest.domains/guides/domain-registrars-for-developers)
- [Use AI to find affordable domains with MCP, WebMCP, and our API](https://www.cheapest.domains/guides/ai-domain-search-mcp-api)