HTTrail vs Schema Studio
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
HTTrail
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HTTrail is a native network inspection workbench for developers building and testing apps on iPhone, iPad, and Mac. Capture and decrypt the HTTPS traffic from your own device, inspect every request and response down to the byte, then compose and replay requests with a full-featured API client. Everything runs on-device. No account, no backend, no analytics, no ads ā your traffic never leaves your device. INTERCEPTING PROXY ⢠Decrypt HTTPS with an on-device certificate authority that mints per-host certificates on the fly ⢠Inspect headers, bodies, timing, and raw hex for every flow ⢠Block, redirect (map local / map remote), rewrite requests and responses, throttle, and set breakpoints ⢠SSL-proxying allowlist so pinned apps keep working ⢠Export captures as HAR API CLIENT ⢠Compose GET, POST and more with params, headers, auth, and structured bodies (JSON, form-urlencoded, multipart) ⢠GraphQL, pre-request and test scripts, and live response preview ⢠Organize requests into collections with environments and history ⢠Import from cURL, OpenAPI 3, and Postman v2.1 ⢠Generate code: cURL, Swift, JavaScript, Python REALTIME ⢠Connect and test WebSocket, Server-Sent Events, Socket.IO, and MQTT ⢠Built-in local test server PRIVATE BY DESIGN HTTrail captures only your own device's traffic, with your explicit consent, and keeps it on your device. No data is collected. Nothing is ever sent to us. HTTrail is a developer tool for debugging and testing your own apps and APIs.
Schema Studio
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Database design without the ceremony. Schema Studio turns tables, columns, relationships, indexes, DDL, and design documents into one visual workflow built for iPhone and iPad. Start with a blank design and add only the objects you need. DESIGN VISUALLY ⢠Create, edit, delete, and reorder tables and columns ⢠Set logical data types, nullability, defaults, primary keys, uniqueness, and automatic numbering ⢠See an inline explanation when a rule depends on the selected value type ⢠Build single-column and composite indexes, including per-column sort direction ⢠Connect tables and inspect the result as an interactive ER diagram GENERATE FOR MAJOR DATABASES Choose PostgreSQL, MySQL, MariaDB, SQLite, Oracle Database, Microsoft SQL Server, or IBM Db2. Schema Studio maps identifiers, data types, identity syntax, constraints, and supported index options for the selected target. PREVIEW BEFORE EXPORT Review generated DDL in a syntax-highlighted SQL preview. Validation messages identify unsupported or incomplete design choices before a file is created. CREATE DOCUMENTATION Export the same design as Excel, PDF, Markdown, and HTML, together with a target-specific .sql file. After generation, choose Save to Files to select a folder or share a copy with another app. Documentation includes tables, columns, indexes, and relationship definitions. WORK ACROSS LANGUAGES Switch the app interface among 15 languages, including English, Japanese, Simplified Chinese, Traditional Chinese, Korean, Spanish, French, German, Portuguese (Brazil), Italian, Arabic, Hindi, Indonesian, Thai, and Vietnamese. The documentation language can be selected independently. PRIVATE BY DEFAULT No account, ads, analytics, tracking, or cloud service is required. Your schema stays in the app's local container unless you explicitly save or share generated files. Schema Studio generates design artifacts and DDL; it does not connect to database servers or execute SQL. Review and test generated SQL against your target database before production use. The ER canvas itself is not exported as a standalone image in version 1.0.
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Verdict
The clearest difference is price: HTTrail at Free against Schema Studio's $0.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
HTTrail is free to download; Schema Studio costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | HTTrail | Schema Studio |
|---|---|---|
| Price | Free ā better | $0.99 |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, Mac ā better | iPhone, iPad |
| Requires iOS | 17.0 | 17.0 |
| Further details ā not scored | ||
| Size | 23 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | 1Moby Co., Ltd. | SMART BIT K.K |
In-app purchases
HTTrail
No in-app purchases
Schema Studio
No in-app purchases









