Comparison

OnDevice vs Spark for Unity Demo

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

Head to head
About

OnDevice

Run various AI models locally on your iPhone without needing an internet connection. Generate text, process images, and use voice commands with on-device processing. Explore and download compatible models tailored to your hardware.

Highlights
  • Local AI model execution
  • Language, vision, and speech models
  • On-device image generation
  • Built-in OCR
  • Optional network features
  • No app account required
Features
Read full description

OnDevice is a local-first AI studio for iPhone. Run compatible language, vision, speech, and image models on your device. Browse models and choose what to download. Model size, memory use, and speed depend on your hardware. CHAT AND CREATE Ask questions, write, work with code, save snippets, and export conversations. Use camera or photo input with a compatible vision model, or use built-in OCR without downloading a vision model. Voice conversations use local Apple speech by default, with optional downloadable neural voices. Compatible image models support local image generation, which can be restricted with a parental PIN. YOU CHOOSE THE CONNECTIONS Local inference uses installed models. Network features are optional: model discovery and downloads, web search, paired Mac tools, a local API, and iCloud sync. Web providers may receive the queries or content you choose to send and may require their own API account. No app account is required for local use; there is no analytics SDK. REQUIREMENTS Requires iOS 18 or later. Downloadable models need storage and sufficient available memory. The app may pause or refuse heavy workloads when the device is too hot or memory is low. Model compatibility and performance vary by device.

About

Spark for Unity Demo

Features
Read full description

Spark for Unity Demo showcases real-time GPU texture compression running on your iOS device. Spark is a middleware library for game and graphics developers: https://github.com/ludicon/spark Spark is available to Unity developers at https://github.com/Ludicon/spark-unity Developed by Ludicon LLC.

Screenshots

OnDevice4 screens
Spark for Unity Demo2 screens

Verdict

The call

The clearest difference is chart position: OnDevice at #45 against Spark for Unity Demo's unranked. Spark for Unity Demo's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 18.0). On price, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scorecard3 real differences · 7 level
OnDevice versus Spark for Unity Demo: the parameters behind the verdict, then further details
ParameterOnDeviceSpark for Unity Demo
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 days—
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
Best chart rank#45 — better—
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS18.015.0 — better
Further details — not scored
Size208 MB87 MB
Age rating17+4+
DeveloperMESUT CAN YAGCILudicon LLC

In-app purchases

None

OnDevice

No in-app purchases

None

Spark for Unity Demo

No in-app purchases

Questions

Is OnDevice free?
OnDevice is free to download, with no in-app purchases.
Is Spark for Unity Demo free?
Spark for Unity Demo is free to download, with no in-app purchases.
Do OnDevice or Spark for Unity Demo have ads?
Neither OnDevice nor Spark for Unity Demo shows ads.

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