Comparison

DeviceAI vs PDF Tools Pro

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

Head to head
About

DeviceAI

Read full description

Run powerful AI models entirely on your iPhone β€” no internet, no subscriptions, no data sharing. DeviceAI is a privacy-first chat app that runs large language models (LLMs) completely on your device using Apple's Metal GPU acceleration. Your conversations never leave your phone. KEY FEATURES β€’ 100% On-Device Processing β€” All AI inference happens locally. Zero cloud dependency. β€’ 60+ Open-Source Models β€” Choose from Llama, Qwen, Phi, Mistral, DeepSeek and more β€’ Full Privacy β€” No data collection, no analytics, no telemetry. Your chats stay on your device. β€’ Offline-First β€” Works perfectly without internet after model download β€’ Streaming Responses β€” See AI responses appear in real-time β€’ Reasoning Models β€” Support for advanced thinking models like DeepSeek R1 β€’ Markdown & Code β€” Beautiful formatting with syntax highlighting β€’ Customizable β€” Adjust system prompts, temperature, and generation parameters β€’ Conversation History β€” All chats saved locally with Isar database PERFECT FOR β€’ Privacy advocates who want AI without cloud exposure β€’ Travelers and remote workers who need offline AI assistance β€’ Developers testing open-source models β€’ Students wanting unlimited, free AI tutoring β€’ Anyone who values data sovereignty TECHNICAL DETAILS β€’ Powered by llamadart (llama.cpp for Flutter) β€’ Supports GGUF format models from HuggingFace β€’ Metal GPU acceleration for fast inference (15-40 tokens/second) β€’ Models range from 0.5B to 8B parameters β€’ Requires iOS 16.0 or later Download models once, use forever. No subscriptions, no API keys, no compromises. Your data stays on your device. Always.

About

PDF Tools Pro

Features
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PDF Tools Pro keeps everyday PDF work on your iPhone or iPad. Import and organize documents, read and annotate with a safe working copy, reorder or extract pages, merge and split files, convert pages to images, protect or unlock PDFs, scan paper documents, create searchable PDFs with on-device OCR, and optimize scanned PDFs. Your documents are processed on-device and are not uploaded to us. Free core tools remain available. Three successful advanced outputs are included on each device, and Lifetime Pro unlocks every advanced tool with one non-consumable purchase. No subscription or account is required. Family Sharing is supported when eligible through Apple.

Screenshots

DeviceAI4 screens
PDF Tools Pro4 screens

Verdict

The call

The clearest difference is price: PDF Tools Pro at Free against DeviceAI's $2.99. DeviceAI's advantage is in-app purchases (none vs 1) and iOS requirement (16.4 vs 18.0). On update cadence, ads and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

PDF Tools Pro is free to download; DeviceAI costs $2.99 up front. PDF Tools Pro sells 1 one-off in-app purchase. DeviceAI asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 7, 2026 and October 19, 2026 respectively.

Scorecard3 real differences Β· 3 level
DeviceAI versus PDF Tools Pro: the parameters behind the verdict, then further details
ParameterDeviceAIPDF Tools Pro
Price$2.99Free β€” better
Update frequencyMonthlyMonthly
AdsNoNo
In-app purchasesNo β€” betterYes
DevicesiPhoneiPhone, iPad β€” better
Requires iOS16.4 β€” better18.0
Further details β€” not scored
Size34 MB5 MB
Age rating4+4+
DeveloperEvan Yeohζ˜ŽιΎ™ 车

In-app purchases

None

DeviceAI

No in-app purchases

1 purchases

PDF Tools Pro

One-time1
  • Lifetime Pro$7.99

Questions

Is DeviceAI free?
DeviceAI costs $2.99, with no in-app purchases.
Is PDF Tools Pro free?
PDF Tools Pro is free to download, with in-app purchases available.
Do DeviceAI or PDF Tools Pro have ads?
Neither DeviceAI nor PDF Tools Pro shows ads.
Which is updated more often, DeviceAI or PDF Tools Pro?
DeviceAI ships an update monthly, and PDF Tools Pro monthly. Most recently, DeviceAI was updated on October 7, 2026 and PDF Tools Pro on October 19, 2026.

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