Comparison

Tester vs SIMSY

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

Head to head
About

Tester

This app empowers developers to manage and test various API protocols, including REST, GraphQL, and WebSockets, directly from their mobile devices. It offers advanced features for request building, data encoding, and authorization, with integrations for Shortcuts and Widgets. An Apple Watch app is also available for on-the-go API calls.

Highlights
  • Supports REST, GraphQL, WebSocket, SOAP, XML, HTTP/HTTPS
  • Comprehensive HTTP request methods
  • Advanced GraphQL editor
  • WebSocket testing
  • Multiple API call data encodings
  • Adjustable request settings (TLS, redirects, timeouts)
  • Import requests from cURL, links, or files
Features
Read full description

The first mobile app to handle any developer task on the go. Main features: - REST, GraphQL, WebSocket, SOAP, JSON RPC, XML, HTTP, HTTPS, etc. - All types of HTTP requests: GET, POST, PUT, PATCH, DELETE, HEAD, OPTIONS, COPY, LINK, UNLINK, PURGE, LOCK, UNLOCK, PROPFIND, VIEW. - Powerful GraphQL editor with full-scale experience: body editor with Queries, Mutations, Subscriptions and syntax support; variables editor; documentation explorer; request settings and metadata. - WebSocket testing tool. Handles connection and message exchange via WS or WSS. - API calls with any kind of request data encoding and transfer type (query params, URLEncoded params, FormData, raw data, send files from device storage, cloud, remote server). - Settings. TLS can be skipped, redirects can be disabled, timeouts are adjustable. Weak SSL verification can be enabled and replaced with self-signed certificate. - Import request or collection by curl, link or file from your device. And naturally, there is any type of collection for you: Swagger, OpenAPI, Postman, YAML. - Need to share request in seconds? Deep link and cURL command supported. - Apple Watch app. Allows to send API requests directly from your wrist. - Integrations: Shortcuts, Widgets. Additional little things: - Autocomplete for most common headers keys. - Syntax highlighting; Auto formatting. - Optimized for viewing on any device screen. - Cookies. Collect, edit, create. - Request metrics. Measure request duration, response size, status code changing. - History of all request calls. - Request authorisation. Basic Auth with password and username. OAuth with header or query access token. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://tester.io/privacy-policy

About

SIMSY

Features
Read full description

The SIMSY app is your gateway to a new mobile experience. SIMSY provides a mobile data service with a difference. Use our app to download our eSIM, order a physical SIM, top up your account and manage your mobile services. With our app you can get your MCP key, which allows you to integrate the SIMSY mobile solution directly into your favourite AI tool whether that's chat GPT, Claude, a perplexity or anything else you might want to use. • Use your MCP key to access the SIMSY MCP Server. • SIMSY allows you to integrate connectivity with a suite of AI tools including Lovable, Windsurf, Databutton, Cursor, RooCode and Replit. • Head to s-imsy.com to look at the available base applications and to see how you can use SIMSY to integrate with your other connected solutions. The SIMSY app enables quick, easy and free remote access into any of your devices, whether it’s Raspberry PI, home automation system, video cameras, Nvidia Jetson devices, home networks or anything else you can think of. You can also take your SIMSY SIM roaming, travel round the world with low cost data and only pay for the data you need to use. Your credit will not expire so you don't need to continually buy bundles.

Screenshots

Tester4 screens
SIMSY4 screens

Verdict

The call

The clearest difference is in-app purchases: SIMSY at none against Tester's 7. SIMSY also leads on iOS requirement (16.0 vs 18.7). Tester's advantage is update cadence (every 2 days vs monthly) and chart position (#112 vs unranked). On price, ads 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. Tester sells 7 in-app purchases, starting at $0.99 per 7 days. SIMSY asks for nothing beyond the download.

UpkeepUpdate frequency

Tester ships an update every 2 days, SIMSY monthly. The most recent releases landed on November 3, 2026 and October 25, 2026 respectively.

Scorecard4 real differences · 7 level
Tester versus SIMSY: the parameters behind the verdict, then further details
ParameterTesterSIMSY
PriceFreeFree
Rating4.7 (599 ratings) — better—
Positive reviews89.9% of reviews—
Number of ratings599 — better—
Update frequencyEvery 2 days — betterMonthly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
Best chart rank#112 — better—
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS18.716.0 — better
Further details — not scored
Size77 MB70 MB
Age rating4+4+
DeveloperFJEDIS-IMSY Ltd

Bugs and requests

Tester

Reported bugs

3 issues
  • Deleting all saved requests after updates
  • App launching to a black screen
  • Shortcuts integration not working as expected

Requested features

5 requests
  • Add support for environment variables
  • Implement folders/collections management
  • Allow exporting/importing data as JSON
  • Provide more Shortcuts actions
  • Add ability to change app icon

SIMSY

Not enough reviews yet to summarise bugs or requests.

In-app purchases

7 purchases

Tester

Subscriptions6
  • Tester Go Weekly$0.997 Days
  • Tester Go Monthly$4.991 Month
  • Tester Plus Monthly$7.991 Month
Show 3 more
  • Tester Pro Monthly$19.991 Month
  • Tester Plus Yearly$79.991 Year
  • Tester Pro Yearly$200.001 Year
One-time1
  • Tester Plus Lifetime$89.99
None

SIMSY

No in-app purchases

Questions

Is Tester free?
Tester is free to download, with in-app purchases available.
Is SIMSY free?
SIMSY is free to download, with no in-app purchases.
Do Tester or SIMSY have ads?
Neither Tester nor SIMSY shows ads.
Which is updated more often, Tester or SIMSY?
Tester ships an update every 2 days, and SIMSY monthly. Most recently, Tester was updated on November 3, 2026 and SIMSY on October 25, 2026.

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