Tester vs ROS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Tester
Test various APIs directly from your mobile device. Supports REST, GraphQL, WebSockets, and more, with advanced editors and request customization. Share requests easily and manage cookies and history.
- Test REST, GraphQL, WebSocket, SOAP, JSON RPC, XML, HTTP, HTTPS APIs
- Powerful GraphQL editor with query, mutation, subscription support
- WebSocket testing tool for WS and WSS connections
- Flexible request data encoding and transfer types
- Import requests from curl, links, or files (Swagger, OpenAPI, Postman)
- One-tap request sharing via deep link or cURL command
- Apple Watch app for sending requests from your wrist
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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
ROS
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ROS2 Sensor turns your iPhone or iPad into a fully-featured ROS2 sensor node. Using native DDS communication, it publishes real-time sensor data directly to your ROS2 network — no rosbridge or middleware required. Supported sensors: - IMU (accelerometer + gyroscope) — sensor_msgs/Imu - GPS location — sensor_msgs/NavSatFix - Camera — sensor_msgs/CompressedImage - Barometer — sensor_msgs/FluidPressure - LiDAR point clouds — sensor_msgs/PointCloud2 (Pro devices) - ARKit 6DOF pose tracking — geometry_msgs/PoseStamped Perfect for robotics researchers, hobbyists, and developers who want to leverage the high-quality sensors in their Apple devices for ROS2 projects. Use your phone as an IMU, a mobile camera, a GPS source, or even a LiDAR scanner for your robot. Requires a local network with ROS2 nodes to communicate with.
Screenshots
Verdict
The clearest difference is in-app purchases: ROS at none against Tester's 7. Tester's advantage is iOS requirement (18.7 vs 26.1). On price, update cadence, 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. ROS asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on October 15, 2026 and September 29, 2026 respectively.
| Parameter | Tester | ROS |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (583 ratings) — better | — |
| Positive reviews | 89.9% of reviews | — |
| Number of ratings | 583 — better | — |
| Update frequency | Every 2 days | Every 2 days |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | — |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPad |
| Requires iOS | 18.7 — better | 26.1 |
| Further details — not scored | ||
| Size | 77 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | FJEDI | Burf Development |
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
ROS
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
ROS
No in-app purchases









