Comparison

PostX vs API Key Manager

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

Head to head
About

PostX

This app allows developers to build and test REST, HTTP, and SOAP APIs directly on their iPhone or iPad. It supports various request methods, authentication types, and body formats, with features for organizing requests and inspecting responses.

Highlights
  • HTTP/HTTPS methods (GET, POST, PUT, DELETE, PATCH)
  • Custom query parameters
  • Basic, Bearer/JWT, OAuth authentication
  • Customizable headers
  • Multiple body formats (raw, binary, GraphQL, form-data)
  • Pre-request and post-response scripting
  • Response viewer with status codes and prettified JSON
  • Request history and workspaces
Features
Read full description

PostX is a powerful yet simple API client for iPhone and iPad for working with REST APIs, HTTP APIs, and even occasional SOAP APIs. Use this REST API client and HTTP API client to quickly build requests, inspect responses, and iterate on your backend without needing a desktop tool. Features of PostX • HTTP/HTTPS methods
Send requests with GET, POST, PUT, DELETE, PATCH, and more so you can cover most modern REST and HTTP APIs in one API client. • Custom parameters
Add query parameters with key, value, and descriptions to keep complex endpoints organized and reusable in your API-client testing workflow. • Authorization
Use Basic, Bearer/JWT, and OAuth-style authentication to connect securely to protected APIs directly from this REST API client for iOS. • Headers
Add custom headers, with common ones like Content-Type and User-Agent ready for quick setup when using this HTTP API client on iPhone and iPad. • Body formats
Build request bodies in raw, binary, GraphQL, form-data, and x-www-form-urlencoded formats to handle most real-world REST and HTTP API scenarios. • Scripts
Insert pre-request and post-response scripts to handle tokens, variables, and simple checks without leaving your API client. • Response viewer
View status codes, headers, and prettified JSON to understand and debug API behavior faster during API-client testing. • History
Automatically save requests and responses so you can rerun, tweak, and reuse them whenever you need inside your API client for iOS. • Workspaces
Create workspaces to organize APIs by project, service, or environment so you can keep related requests grouped and easy to access. Its a great alternative to Postman PostX is an all-in-one REST API client and HTTP API client for iPhone and iPad that brings your desktop API workflow to iOS. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://elevarelab.site/privacy

About

API Key Manager

Features
Read full description

API Key Manager is a private vault for the credentials developers use every day — on iPhone, iPad, and Mac. PROTECT EVERY SECRET • API key values are stored in the Keychain, never in the app database • Optional Face ID protects reveal and copy actions • Copied keys stay on this device and never leave through Universal Clipboard • No account, ads, analytics, tracking, or credential server ORGANIZE YOUR WAY • Only a name and secret are required — everything else is optional • Presets for OpenAI, Stripe, Anthropic, GitHub, and AWS, or enter any provider • Choose an icon independently from the provider • Label development, staging, and production credentials • Search names, providers, environments, and notes FREE AND PRO The Free plan stores up to 3 credentials with every security feature included. Pro unlocks unlimited credentials and end-to-end encrypted sync across iPhone, iPad, and Mac through your iCloud Keychain. Monthly and annual plans are processed by Apple, can be restored, and may be cancelled in App Store subscription settings. Privacy Policy: https://api-key-manager-ios.kai-54321.chatgpt.site/privacy Terms of Use: https://api-key-manager-ios.kai-54321.chatgpt.site/terms

Screenshots

PostX4 screens
API Key Manager4 screens

Verdict

The call

The clearest difference is chart position: PostX at #200 against API Key Manager's unranked. API Key Manager's advantage is update cadence (every 5 weeks vs every 3 months). On price, ads, in-app purchases and device support 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. PostX sells 3 in-app purchases, starting at $4.99 per 7 days and API Key Manager sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

PostX ships an update every 3 months, API Key Manager every 5 weeks. The most recent releases landed on September 28, 2026 and October 9, 2026 respectively.

Scorecard2 real differences · 9 level
PostX versus API Key Manager: the parameters behind the verdict, then further details
ParameterPostXAPI Key Manager
PriceFreeFree
Rating3.0 (10 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings10 — better—
Update frequencyEvery 3 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
Best chart rank#200 — better—
DevicesiPhone, iPadiPhone, Mac
Requires iOS17.6 — better18.0
Further details — not scored
Size4 MB2 MB
Age rating4+4+
DeveloperAnupkumar Naginbhai PatelKai Natori

In-app purchases

3 purchases

PostX

Subscriptions3
  • Postmon Pro Weekly$4.997 Days
  • Postmon Pro Monthly$9.991 Month
  • Postmon Pro Yearly$24.991 Year
2 purchases

API Key Manager

Subscriptions2
  • Monthly Pro$1.991 Month
  • Annual Pro$19.991 Year

Questions

Is PostX free?
PostX is free to download, with in-app purchases available.
Is API Key Manager free?
API Key Manager is free to download, with in-app purchases available.
Do PostX or API Key Manager have ads?
Neither PostX nor API Key Manager shows ads.
Which is updated more often, PostX or API Key Manager?
PostX ships an update every 3 months, and API Key Manager every 5 weeks. Most recently, PostX was updated on September 28, 2026 and API Key Manager on October 9, 2026.

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