Comparison

API Client vs ApiClientSync

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

API Client

Test REST APIs directly from your mobile device. Paste URLs, select methods, and view detailed responses including status codes, headers, and formatted JSON. Manage environments, save requests, and even import/export cURL commands.

Highlights
  • Paste URL and send requests
  • Smart JSON viewer with search
  • Environment management
  • Collections and history
  • cURL import and export
  • API monitoring
  • Test suites and assertions
  • API docs generator
Features
Read full description

Test any API right from your phone. Paste a URL, hit send, see the response. API Client is a lightweight REST and HTTP tester. No account needed. No cloud sync. No setup. Just open the app and start testing. ▸ JUST PASTE & SEND Enter any URL, pick a method (GET, POST, PUT, PATCH, DELETE), and tap Send. See status codes, response time, headers, and formatted JSON — all in one view. ▸ SMART JSON VIEWER Collapsible JSON tree with search, tap-to-copy, and syntax highlighting. Format or minify JSON with one tap. Build request bodies visually without typing raw JSON. ▸ ENVIRONMENTS Switch between development, staging, and production with one tap. Each environment stores its own base URL, bearer token, API key, and custom headers. Use {{variables}} across all requests. ▸ COLLECTIONS & HISTORY Save requests to collections. Pin favorites for quick access. Full history grouped by date with one-tap rerun. Search across all saved requests. ▸ cURL IMPORT & EXPORT Paste any cURL command to import instantly. Export any request as cURL to share with your team or use in terminal scripts. ▸ API MONITORING Set up automatic health checks for your endpoints. Get push notifications when an API goes down or degrades. Track incidents and recovery times. ▸ TEST SUITES & ASSERTIONS Group requests into test suites. Add response assertions — validate status codes, check JSON fields, verify headers. Run all tests with one tap. ▸ API DOCS GENERATOR Generate shareable PDF documentation for any endpoint — method, URL, headers, body, response samples, and status codes included. WORKS GREAT FOR • Developers testing REST APIs from anywhere • Students learning HTTP methods and API concepts • QA engineers validating endpoints • DevOps checking microservice health • Anyone who needs an API client on mobile WHY API CLIENT? This app runs entirely on your device. Your API keys and tokens stay on your phone. No sign-up required — just open and test. SUBSCRIPTION AND PRICING • RESTPilot Pro Lifetime — $9.99, one payment • RESTPilot Pro Monthly — $1.99 per month, renews automatically • Payment is charged to your Apple Account at confirmation of purchase • A subscription renews unless it is cancelled at least 24 hours before the end of the current period • Manage or cancel anytime in your Apple Account settings Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://cosmovex.web.app/apps/restpilot/privacy-policy

About

ApiClientSync

A native API client for developers to build, organize, test, and debug HTTP and WebSocket requests. It offers a clean interface for managing projects, environments, and APIs across iPhone, iPad, and Mac.

Highlights
  • Organize requests with collections
  • Powerful request composer for HTTP/WebSocket
  • Advanced response and transcript viewers
  • Per-request and per-collection proxy support
  • iCloud sync across devices
  • Export requests as code in 20+ languages
Read full description

App Store Description — ApiClientSync ApiClientSync is a fast, fully native API client for developers who want powerful tools without unnecessary complexity. Build, organize, test, and debug HTTP and WebSocket requests in a clean interface designed for iPhone, iPad, and Mac. ORGANIZE REQUESTS WITH COLLECTIONS - Create collections for different projects, environments, or APIs - Add default headers that automatically apply to every request - Use the built-in Cookie Jar to capture, store, and send cookies across requests - Restore your last selected request and response automatically when reopening a collection POWERFUL REQUEST COMPOSER - Support for GET, POST, PUT, PATCH, DELETE, HEAD, and OPTIONS - Build HTTP and WebSocket requests in one app - Edit headers and query parameters using YAML, JSON, or key-value rows - Switch formats anytime without losing data - Send JSON, XML, plain text, SPARQL, URL-encoded forms, multipart forms, and raw file bodies - Toggle multipart fields between text and file uploads per row - Import requests directly from curl commands - Export requests as ready-to-use code in 20+ languages including Swift, Python, JavaScript, Go, Rust, and more ADVANCED RESPONSE AND TRANSCRIPT VIEWERS - Adaptive response layout that maximizes workspace automatically - Pretty-print JSON and XML responses - Preview HTML, images, raw text, Base64, and binary hex dumps inline - Inspect response history for previous runs - View detailed request traces and URLSession debug logs - Review WebSocket transcripts and recent session history - Share response bodies as files or copy formatted output instantly NETWORKING, PROXY, AND IMPORT/EXPORT FEATURES - Per-request and per-collection proxy support - HTTP, HTTPS, and SOCKS5 proxy support - Username and password authentication for proxies - Disable SSL verification for testing internal or self-signed APIs - Import and export HAR 1.2 files - Preserve app-specific request backup data alongside standard HAR compatibility ICLOUD AND APPLE PLATFORM FEATURES - Sync collections, requests, and preferences across devices with iCloud - Live Activities support on iPhone for long-running requests - Home Screen widget support for monitoring saved requests - Fully native SwiftUI experience built for Apple platforms - Optimized for iPhone, iPad, and Mac with sidebar navigation and system appearance support FREE TO START, PRO TO GO FURTHER Upgrade to API Client Pro for unlimited collections, unlimited requests per collection, and HAR file import. Choose a yearly subscription or a one-time lifetime purchase. - Pro Yearly — Unlimited access, billed annually - Pro Lifetime — One-time purchase, yours forever PRIVACY FIRST - No accounts required - No tracking - No ads - Your data stays on your devices and in your iCloud - Just a fast, native API client built for developers Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

API Client4 screens
ApiClientSync4 screens

Verdict

The call

The clearest difference is review sentiment: ApiClientSync at 100% against API Client's 0%. ApiClientSync also leads on update cadence (every 3 days vs every 10 days). API Client's advantage is iOS requirement (14.0 vs 17.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. API Client sells 2 in-app purchases, starting at $1.99 per month and ApiClientSync sells 2 in-app purchases, starting at $9.99 per year. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

API Client ships an update every 10 days, ApiClientSync every 3 days. The most recent releases landed on September 25, 2026 and September 20, 2026 respectively.

Scorecard3 real differences · 7 level
API Client versus ApiClientSync: the parameters behind the verdict, then further details
ParameterAPI ClientApiClientSync
PriceFreeFree
Rating—5.0 (2 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings—2 — better
Update frequencyEvery 10 daysEvery 3 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS14.0 — better17.0
Further details — not scored
Size41 MB7 MB
Age rating17+4+
DeveloperSahana A SMuhammad Muaaz

Customer experience

API Client

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

ApiClientSync

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

API Client

Subscriptions1
  • RESTPilot Pro Monthly$1.991 Month
One-time1
  • Ad Free experience$9.99
2 purchases

ApiClientSync

Subscriptions1
  • Yearly$9.991 Year
One-time1
  • ApiClient Pro — Lifetime$19.99

Questions

Is API Client free?
API Client is free to download, with in-app purchases available.
Is ApiClientSync free?
ApiClientSync is free to download, with in-app purchases available.
Do API Client or ApiClientSync have ads?
Neither API Client nor ApiClientSync shows ads.
Which is updated more often, API Client or ApiClientSync?
API Client ships an update every 10 days, and ApiClientSync every 3 days. Most recently, API Client was updated on September 25, 2026 and ApiClientSync on September 20, 2026.

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