iDraw OSC vs API Zen
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
iDraw OSC
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An application capturing drawing data and sending it to other devices using OSC, a protocol for networking sound synthesizers, computers, and other multimedia devices, to create multimedia content.
API Zen
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API Zen brings the convenience of HTTP API endpoint testing on the go. With its intuitive request composer and detailed response information, it helps developers test endpoints with ease. Main features โข Simple and intuitive request composer and viewer โข Supports headers, request parameters, request body with JSON, XML, raw input, forms with file, image attachments, multipart and binary data โข Organize endpoints into workspaces and projects โข Enable iCloud syncing when creating a new workspace. If syncing is disabled workspace will be created on device only. โข Seamless switching between local and iCloud workspaces โข Option to add custom HTTP methods per project โข Detailed response information which includes headers, cookies, metrics and connection information โข View raw response with syntax highlighting โข Preview HTML response output as web page โข View all response history โข SSL validation per request โข Environment group with variables per workspace with option to select different environment per request โข Supports dark mode โข Import/Export workspace data API Zen is free for use. The app accepts optional donations which supports the development work.
Screenshots
Verdict
The clearest difference is price: API Zen at Free against iDraw OSC's $0.99. API Zen also leads on update cadence (every 2 months vs every 5 months) and iOS requirement (13.0 vs 16.4). iDraw OSC's advantage is in-app purchases (none vs 3). On ads and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
API Zen is free to download; iDraw OSC costs $0.99 up front. API Zen sells 3 one-off in-app purchases. iDraw OSC asks for nothing beyond the download.
iDraw OSC ships an update every 5 months, API Zen every 2 months. The most recent releases landed on September 19, 2026 and September 15, 2026 respectively.
| Parameter | iDraw OSC | API Zen |
|---|---|---|
| Price | $0.99 | Free โ better |
| Update frequency | Every 5 months | Every 2 months โ better |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Devices | iPhone, iPad | iPhone, iPad, iPod โ better |
| Requires iOS | 16.4 | 13.0 โ better |
| Further details โ not scored | ||
| Size | 2 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Gwangyu Lee | Jaseem Valiya Valappil |
In-app purchases
iDraw OSC
No in-app purchases
API Zen
- Thanks$3.99
- Thank you$5.99
- Thank you very much$7.99









