Tester vs SIMSY
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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
SIMSY
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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
Verdict
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
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.
Tester ships an update every 2 days, SIMSY monthly. The most recent releases landed on November 3, 2026 and October 25, 2026 respectively.
| Parameter | Tester | SIMSY |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (599 ratings) — better | — |
| Positive reviews | 89.9% of reviews | — |
| Number of ratings | 599 — better | — |
| Update frequency | Every 2 days — better | Monthly |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Best chart rank | #112 — better | — |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPad |
| Requires iOS | 18.7 | 16.0 — better |
| Further details — not scored | ||
| Size | 77 MB | 70 MB |
| Age rating | 4+ | 4+ |
| Developer | FJEDI | S-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
Tester
- Tester Go Weekly$0.997 Days
- Tester Go Monthly$4.991 Month
- Tester Plus Monthly$7.991 Month
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- Tester Pro Monthly$19.991 Month
- Tester Plus Yearly$79.991 Year
- Tester Pro Yearly$200.001 Year
- Tester Plus Lifetime$89.99
SIMSY
No in-app purchases









