Comparison

iStructly vs CoreAI Zoo

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

Head to head
About

iStructly

Features
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macOS tool to format, validate, and beautify your JSON with clarity and precision.

About

CoreAI Zoo

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CoreAI Zoo puts the open-weight AI model zoo on your iPhone, iPad and Mac. Pick a model, download it once, and run it entirely on your device. No account, no server, and nothing you type, say or photograph ever leaves the device. CHAT Stream answers from open language models such as Qwen3, Gemma, LFM2.5, Granite and Mistral, from 0.6B to 30B+ parameters depending on your device's memory. Vision-language models (Qwen3-VL, MiniCPM-V, LFM2.5-VL) answer questions about your photos. VISION Ask questions about an image, read text with on-device OCR, and describe what the camera sees. AUDIO Transcribe speech with Whisper large-v3-turbo, Parakeet and Qwen3-ASR. Talk to an audio-understanding model, generate speech with Kokoro and VoxCPM, and try on-device music generation. CAMERA Live depth estimation, object detection (YOLOX, RF-DETR), action recognition and super-resolution on the camera feed. TOOLS Experimental models such as diffusion-based language models. BENCH Measure load time, tokens per second and memory for any chat model on your own hardware. HOW IT WORKS Every model runs through Core ML on Apple silicon. Weights are downloaded from the Hugging Face Hub on first use over HTTPS, then cached, so the app works offline afterwards. One model is resident at a time to stay within memory limits. New models arrive through a live catalog without an app update. GETTING STARTED Start with Qwen3-0.6B (454 MB) for the fastest first run. Larger models state the free space and memory they need; a recent iPhone Pro or an Apple silicon Mac runs the mid-size ones comfortably. Model weights follow their own licenses, listed on each model's Hugging Face page. The app itself is BSD-3-Clause and part of the open CoreAI model zoo. Report issues and request models at github.com/john-rocky/coreai-model-zoo.

Screenshots

iStructly4 screens
CoreAI Zoo4 screens

Verdict

The call

The clearest difference is update cadence: iStructly at daily against CoreAI Zoo's every 4 days. iStructly also leads on iOS requirement (17.0 vs 27.0). On price, ads, in-app purchases 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

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

UpkeepUpdate frequency

iStructly ships an update daily, CoreAI Zoo every 4 days. The most recent releases landed on November 9, 2026 and November 10, 2026 respectively.

Scorecard2 real differences ยท 4 level
iStructly versus CoreAI Zoo: the parameters behind the verdict, then further details
ParameteriStructlyCoreAI Zoo
PriceFreeFree
Update frequencyDaily โ€” betterEvery 4 days
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, Mac โ€” betteriPhone, iPad
Requires iOS17.0 โ€” better27.0
Further details โ€” not scored
Size1 MB13 MB
Age rating4+4+
DeveloperBasel AbuTalebDaisuke Majima

In-app purchases

None

iStructly

No in-app purchases

None

CoreAI Zoo

No in-app purchases

Questions

Is iStructly free?
iStructly is free to download, with no in-app purchases.
Is CoreAI Zoo free?
CoreAI Zoo is free to download, with no in-app purchases.
Do iStructly or CoreAI Zoo have ads?
Neither iStructly nor CoreAI Zoo shows ads.
Which is updated more often, iStructly or CoreAI Zoo?
iStructly ships an update daily, and CoreAI Zoo every 4 days. Most recently, iStructly was updated on November 9, 2026 and CoreAI Zoo on November 10, 2026.

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