Insomnia vs ModHeader: Pricing and Ratings Compared (2026)
Entry prices and free plans as read on each vendor's pricing page, and user ratings as published on review sites, for Insomnia and ModHeader side by side. This page compares data; it is not a hands-on review.
On the data: On the data below, ModHeader leads on lower entry price. We do not name an overall winner for this pair.
Short on time? Here's the quick answer
Based on published vendor pricing and features and on public review data, here's who should pick what:
Insomnia
API client for REST and GraphQL
Best for you if:
- • You want supports 7+ API protocols in a single tool, no need for separate clients
ModHeader
Modify HTTP request and response headers directly from your browser for web development and debugging.
Best for you if:
- • You want simplifies web development and debugging by allowing quick header modifications
| At a Glance | Insomnia | ModHeader |
|---|---|---|
Starts at | Free plan, paid from $12/user/mo, billed monthly Pro plan | Free plan, paid from $2/mo, billed monthly ModHeader Pro (Annual billing) plan |
Category | API Tools Developer Tools | API Tools Testing & QA |
Rating | 4.4/5 G2 4.4 21 reviews | n/a |
Free plan | Yes | Yes |
Watch out for | Overage fees for mock server requests on Pro tier | Monthly billing is double annual ($4 vs $2). |
Choose Insomnia or ModHeader?
Choose Insomnia if
- You want supports 7+ API protocols in a single tool, no need for separate clients
- You want free tier includes unlimited local projects, collection runs, and environments
Choose ModHeader if
- You want simplifies web development and debugging by allowing quick header modifications
- You want helps simulate various user environments and edge cases
- Budget matters ($2/mo, billed monthly vs $12/user/mo, billed monthly)
In-Depth Analysis
Insomnia
API client for REST and GraphQL
Insomnia's pricing is quite generous, especially with its robust free 'Essentials' tier which offers significant functionality for individual developers and small teams.
Watch out
Overage fees for mock server requests on Pro tier
Strengths
- Pro: Supports 7+ API protocols in a single tool, no need for separate clients
- Pro: Free tier includes unlimited local projects, collection runs, and environments
- Pro: Git Sync provides true version control without vendor lock-in
- Pro: Open-source core means transparency and community-driven development
- Pro: Inso CLI integrates API testing directly into CI/CD pipelines
Weaknesses
- Con: Git Sync limited to 3 users on the free plan
- Con: Mock server requests capped at 1,000/month on the free tier
- Con: Enterprise SSO (SAML/OIDC) only available on the $45/user/month plan
- Con: Desktop-only application, no browser-based or mobile client available
- Con: Some advanced features require a Kong account even for local-only usage
Key features
ModHeader
Modify HTTP request and response headers directly from your browser for web development and debugging.
ModHeader offers a very fair and generous pricing structure, especially for individual developers.
Watch out
Monthly billing is double annual ($4 vs $2).
Strengths
- Pro: Simplifies web development and debugging by allowing quick header modifications.
- Pro: Helps simulate various user environments and edge cases.
- Pro: Reduces debugging time and potential production bugs.
- Pro: Supports testing of feature flags without code changes.
- Pro: Offers additional tools for header testing and security policy editing.
Weaknesses
- Con: Primarily a browser extension, may not cover all advanced network debugging needs.
- Con: Specific pricing details are not immediately available on the provided pages.
Key features
Plans and prices: Insomnia vs ModHeader
| Tool | Plans and prices | Source |
|---|---|---|
| Insomnia |
| insomnia.rest/pricing read Nov 2, 2026 |
| ModHeader |
| modheader.com/pricing read Sep 29, 2026 |
Prices as read on each vendor's own pricing page on the date shown. Plans are listed per tool and are not matched against the other tool's plans: a plan name or price in one column says nothing about the same row in the other. Details on Insomnia pricing and ModHeader pricing.
Key Takeaways
Insomnia
- Choose if you want API client for REST and GraphQL
ModHeader
- Lower entry price: $2/mo, billed monthly vs $12/user/mo, billed monthly
What the data shows
On the data below, ModHeader leads on lower entry price. We do not name an overall winner for this pair.
- Only Insomnia has a published user rating (4.4/5 from 21 reviews); ModHeader has none we can show.
- ModHeader has the lower entry price: $2/mo, billed monthly (ModHeader Pro (Annual billing)) against $12/user/mo, billed monthly (Pro) for Insomnia.
- Both have a free plan.
Criteria: user rating (only above 20 reviews on both sides, gap of 0.2 or more), entry price (only on the same billing basis), free plan. How we rate
Frequently Asked Questions
How do Insomnia and ModHeader compare in 2026?
On the data below, ModHeader leads on lower entry price. We do not name an overall winner for this pair. Only Insomnia has a published user rating (4.4/5 from 21 reviews); ModHeader has none we can show. ModHeader has the lower entry price: $2/mo, billed monthly (ModHeader Pro (Annual billing)) against $12/user/mo, billed monthly (Pro) for Insomnia. Both have a free plan.
What are Insomnia and ModHeader used for?
Insomnia: API client for REST and GraphQL. ModHeader: Modify HTTP request and response headers directly from your browser for web development and debugging.
What does Insomnia cost vs ModHeader?
Insomnia's cheapest paid plan is Pro at $12/user/mo, billed monthly; it also has a free plan. ModHeader's cheapest paid plan is ModHeader Pro (Annual billing) at $2/mo, billed monthly; it also has a free plan. Prices read on the vendors' pricing pages, latest check Nov 2, 2026.
What's the main difference between Insomnia and ModHeader?
Insomnia's main strength: supports 7+ API protocols in a single tool, no need for separate clients. ModHeader's main strength: simplifies web development and debugging by allowing quick header modifications.