QRCode Plus vs Private AI Models
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
QRCode Plus
This tool transforms your device into a code scanner and verifier. It can check ticket validity by scanning codes and submitting them to a specified URL, reacting based on the server's response. It also functions as a general scanner for various code types.
- Scan QR, Bar, and PDF417 codes
- Verify ticket validity
- Submit scanned codes to a URL
- Customizable submission method and key
- Reacts to server responses (accept/reject)
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A code scan and verify tool which can turn your iPhone and iPad into a ticket checker or something else. This app can scan your passbook proof and submit the code to the designated URL with the designated method and key name, then it will react according to the JSON data responded from the server(accept or not) to tell you whether the ticket you scanned is valid or not. Even if you're not a programmer, you can also treat this as a normal but cool code scanner which support Bar Code, QR Code and PDF417 Code. Hope you can enjoy it :-)
Private AI Models
Engage in AI conversations locally on your device without needing an internet connection or cloud servers. This app allows you to download and run various open AI models, keeping your data private and secure. Chat with documents, understand images, and utilize pre-built assistants for diverse tasks.
- Runs AI models entirely on your phone
- Completely offline functionality
- Chat with your documents (PDF, text, Markdown)
- Image understanding and analysis
- Step-by-step reasoning visualization
- Pre-built AI assistants
- On-device text-to-speech
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Chat with an AI that lives on your phone, not in the cloud. Private AI is an offline AI chat app: open models like Qwen, Gemma and GLM run entirely on your phone — no server, no account, and after a one-time model download no internet at all. YOUR AI, YOUR DEVICE Cloud chatbots send every word you type to a data center. Private AI computes the answer on your phone's own chip: your chats, your photos and the models themselves stay with you. Uninstall it and everything goes with it. WORKS COMPLETELY OFFLINE Download a model once, then chat anywhere: • On flights, subways and trips abroad • In dead zones and on unreliable connections • Whenever you want answers that stay private Switch on airplane mode if you like — the app won't notice. THE LATEST OPEN MODELS, PHONE-SIZED • Qwen 3.5 (0.8B, 4B, 9B) — fast, smart and multilingual • Google Gemma 4 (E2B, E4B) — mobile-first quality, 140+ languages • GLM 4.6V Flash — flagship-class vision for high-end phones • Ministral 3 — compact, with a 256k context window • Bring your own: load any GGUF model by URL (Hugging Face links work) Models are 0.8–6 GB downloads. A "Fits your device" badge reads your phone's RAM so you know what will run well before you download, the catalog is searchable and filterable, and interrupted downloads resume where they stopped. BENCHMARK IT ON YOUR OWN PHONE Run the built-in benchmark on any downloaded model to see exactly how fast it loads and generates on your hardware — tokens per second, GPU or CPU — and pick the model that fits. CHAT WITH YOUR DOCUMENTS Attach a PDF, text or Markdown file to any chat and ask about it: the text is extracted and searched on your phone, the model answers from the matching passages and tells you which ones it used. Contracts, papers, manuals, notes: the files are never uploaded. UNDERSTANDS IMAGES Every model in the catalog supports vision. Add the optional image-support file, then snap a photo or pick one from your gallery: read documents, translate signs, decode menus, describe scenes. WATCH IT THINK Turn on thinking mode and reasoning models show their step-by-step working in a collapsible panel above the answer — great for math, code and anything worth double-checking. ASSISTANTS Start a chat with a ready-made assistant: Tutor, Writing Coach, Email Helper, Translator, Code Helper, Summarizer, Chef or Travel Planner, each with its own instructions and one-tap starters. An offline translator for your next trip, no signal needed. A REAL CHAT APP • Markdown that renders: code blocks with one-tap copy, tables and lists • Streaming answers with a live tokens-per-second readout • Switch models mid-conversation from the chat header • A system prompt per chat, plus Creative / Balanced / Precise / Thinking presets • Edit, regenerate, copy, select text — or have any answer read aloud (on-device TTS) • Search your chats, pin favorites, light and dark themes • Back up every chat and setting to a single JSON file, and restore anywhere PRIVATE BY DESIGN • Conversations and photos are processed on your device, never in the cloud • No account, no sign-up, no server • GPU-accelerated by llama.cpp — Metal on iPhone, OpenCL on Snapdragon Adreno PRIVATE AI PRO Free to use, with ads that never interrupt an answer (offline, none load). Pro removes all ads and adds your own custom assistants and accent colors. Choose monthly, yearly (with a free trial for new subscribers) or a one-time lifetime unlock. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period; manage or cancel anytime in your store account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://llm.chinesepowered.com/privacy.html Formerly Personal LLM: same app, new name. Your questions are yours. Keep them that way.
Screenshots
Verdict
The clearest difference is review sentiment: QRCode Plus at 50% against Private AI Models's 0%. QRCode Plus also leads on rating (3.0 vs 1.0) and ads (none vs shown). Private AI Models's advantage is update cadence (fortnightly vs every 16 months). On price, ratings volume, in-app purchases and device support 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
QRCode Plus holds the better App Store score, 3.0 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews point the same way: 50% of QRCode Plus's written reviews are positive against 0% of Private AI Models's.
QRCode Plus ships an update every 16 months, Private AI Models fortnightly. The most recent releases landed on October 10, 2026 and October 9, 2026 respectively.
| Parameter | QRCode Plus | Private AI Models |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 50.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 16 months | Fortnightly — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 7.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 4 MB | 68 MB |
| Age rating | 4+ | 12+ |
| Developer | 典 熊 | Nelson Lai |
Customer experience
QRCode Plus
Private AI Models
In-app purchases
QRCode Plus
No in-app purchases
Private AI Models
No in-app purchases
Questions
Is QRCode Plus free?
Is Private AI Models free?
Which has better reviews, QRCode Plus or Private AI Models?
Do QRCode Plus or Private AI Models have ads?
Which is updated more often, QRCode Plus or Private AI Models?
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