Comparison

Control vs Plain AI

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

Head to head
About

Control

Features
Read full description

Your AI conversations with complete privacy. Control is a free LLM interface that puts you in charge of your AI experience. Chat with lightweight open source language models while keeping your data completely private. These mobile-optimized models offer basic AI assistance with the trade-off of complete privacy and offline functionality - everything runs locally on your device. This is a basic tool. Privacy & Data Protection: All processing happens on your device with no data collection or sharing. Your conversations never leave your phone and no accounts, logins, or cloud storage are required. Works completely offline with zero network dependencies for chat, no tracking or analytics. Your data stays yours and history resets after every session or 24 hours, whichever comes first, ensuring no persistent data storage. Choice: Choose from various open source language models and switch between models instantly to find the perfect AI assistant for your specific needs. Free and open source with no subscriptions or hidden costs.

About

Plain AI

Features
Read full description

Plain AI is a simple, straightforward AI chat app that runs entirely on your device. All conversations are private and processed locally without any internet connection. Key Features โ€ข Multiple AI Models: Choose from Llama 3.2 (1B and 3B), Qwen 3.1 1.7B, Gemma 2 2B, or Apple Foundation Models โ€ข Complete Privacy: All processing happens on your device - no data is sent to servers โ€ข Customizable Parameters: Adjust temperature and top-p settings to control response creativity and diversity โ€ข Offline First: Works without internet after initial model download โ€ข Clean Interface: Simple, distraction-free chat experience Supported Models โ€ข Apple Foundation Models (iOS 26+, no download required) โ€ข Llama 3.2 1B (fast and efficient for basic tasks) โ€ข Llama 3.2 3B (balanced speed and quality) โ€ข Qwen 3.1 1.7B (multilingual support) โ€ข Gemma 2 2B (safe and reliable responses) Privacy Your conversations never leave your device. No accounts, no tracking, no data collection. Everything stays private and local. Free Forever Plain AI is completely free with no ads, subscriptions, or in-app purchases. Download a model and start chatting. Requirements โ€ข Storage space for downloaded models (approximately 700MB to 2GB per model) โ€ข Apple Foundation Models require iOS 26 or later and compatible devices AI responses may occasionally be inaccurate. Please verify important information.

Screenshots

Control3 screens
Plain AI4 screens

Verdict

The call

Control and Plain AI are too close to call on the numbers: across 5 compared parameters โ€” price, ads, in-app purchases and device support among them โ€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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.

ScorecardNo meaningful differences
Control versus Plain AI: the parameters behind the verdict, then further details
ParameterControlPlain AI
PriceFreeFree
Update frequencyEvery 5 daysโ€”
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad โ€” betteriPhone
Requires iOS18.517.0 โ€” better
Further details โ€” not scored
Size9 MB16 MB
Age rating12+4+
DeveloperCarlos TarratsJarle Hansen

In-app purchases

None

Control

No in-app purchases

None

Plain AI

No in-app purchases

Questions

Is Control free?
Control is free to download, with no in-app purchases.
Is Plain AI free?
Plain AI is free to download, with no in-app purchases.
Do Control or Plain AI have ads?
Neither Control nor Plain AI shows ads.

Other comparisons