Comparison

iDraw OSC vs API Zen

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

iDraw OSC

Features
Read full description

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.

About

API Zen

Features
Read full description

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 โ€ข Simple and intuitive request composer and viewer โ€ข Supports headers, request parameters, request body with JSON, XML, raw input, forms with file, image attachments, multipart and binary data โ€ข Organize endpoints into workspaces and projects โ€ข Enable iCloud syncing when creating a new workspace. If syncing is disabled workspace will be created on device only. โ€ข Seamless switching between local and iCloud workspaces โ€ข Option to add custom HTTP methods per project โ€ข Detailed response information which includes headers, cookies, metrics and connection information โ€ข View raw response with syntax highlighting โ€ข Preview HTML response output as web page โ€ข View all response history โ€ข SSL validation per request โ€ข Environment group with variables per workspace with option to select different environment per request โ€ข Supports dark mode โ€ข Import/Export workspace data API Zen is free for use. The app accepts optional donations which supports the development work.

Screenshots

iDraw OSC4 screens
API Zen4 screens

Verdict

The call

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences ยท 2 level
iDraw OSC versus API Zen: the parameters behind the verdict, then further details
ParameteriDraw OSCAPI Zen
Price$0.99Free โ€” better
Update frequencyEvery 5 monthsEvery 2 months โ€” better
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPadiPhone, iPad, iPod โ€” better
Requires iOS16.413.0 โ€” better
Further details โ€” not scored
Size2 MB7 MB
Age rating4+4+
DeveloperGwangyu LeeJaseem Valiya Valappil

In-app purchases

None

iDraw OSC

No in-app purchases

3 purchases

API Zen

One-time3
  • Thanks$3.99
  • Thank you$5.99
  • Thank you very much$7.99

Questions

Is iDraw OSC free?
iDraw OSC costs $0.99, with no in-app purchases.
Is API Zen free?
API Zen is free to download, with in-app purchases available.
Do iDraw OSC or API Zen have ads?
Neither iDraw OSC nor API Zen shows ads.
Which is updated more often, iDraw OSC or API Zen?
iDraw OSC ships an update every 5 months, and API Zen every 2 months. Most recently, iDraw OSC was updated on September 19, 2026 and API Zen on September 15, 2026.

Other comparisons