Tester vs ViewSource+
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Tester
This app empowers developers to handle various API tasks on the go. It supports numerous protocols and request types, offering advanced features for GraphQL and WebSocket testing. Seamlessly manage requests, import collections, and even send API calls from your Apple Watch.
- Supports REST, GraphQL, WebSocket, SOAP, XML, HTTP/S
- Comprehensive GraphQL editor
- WebSocket testing tool
- Flexible API call data encoding
- Adjustable request settings (TLS, redirects, timeouts)
- Import requests/collections (curl, Swagger, OpenAPI)
- Apple Watch app for API requests
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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
ViewSource+
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ViewSource+ lets you inspect the source code of any website in seconds. Open a page in Safari, tap Share, then choose Open in ViewSource+. The app fetches the page source and displays it in a clean, readable code viewer with syntax highlighting. Built for developers, designers, students, and anyone curious about how websites are made. What you can do: -View HTML source from any website -Automatically detect and highlight HTML, CSS, JavaScript, and PHP -Search within code with highlighted matches, result counts, and next/previous navigation -View useful fetch details including HTTP status, content type, file size, load time, and final URL -Adjust code font size for easier reading -Copy source code to the clipboard -Switch between Light, Dark, or System appearance -Open pages directly from Safari using the share sheet ViewSource+ is fast, simple, and focused on doing one thing well: letting you see the code behind the web. No accounts. No tracking. No clutter.
Screenshots
Verdict
The clearest difference is in-app purchases: ViewSource+ at none against Tester's 7. Tester's advantage is update cadence (every 2 days vs every 2 months) and chart position (#163 vs unranked). On price, ads, device support and iOS requirement 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. ViewSource+ asks for nothing beyond the download.
Tester ships an update every 2 days, ViewSource+ every 2 months. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.
| Parameter | Tester | ViewSource+ |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (595 ratings) — better | — |
| Positive reviews | 89.9% of reviews | — |
| Number of ratings | 595 — better | — |
| Update frequency | Every 2 days — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Best chart rank | #163 — better | — |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPad |
| Requires iOS | 18.7 | 17.6 — better |
| Further details — not scored | ||
| Size | 76 MB | 7 MB |
| Age rating | 4+ | 12+ |
| Developer | FJEDI | 1BIGRIG 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
ViewSource+
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
ViewSource+
No in-app purchases









