Spike AI vs Offline AI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Spike AI
This AI chat application offers flexible model execution, allowing you to use cloud-based AI, your own on-device models, or connect to a remote server. It supports encrypted conversation syncing across devices and project organization for managing your AI interactions.
- Cloud-based AI chat
- On-device model execution
- Connect to OpenAI-compatible servers
- Sync encrypted conversations
- Organize chats in projects
- Choose tools for tasks
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Meet Spike Studio: AI chat on your iPhone, with a choice of where your model runs. GET STARTED WITH SPIKE CLOUD Create a free account in the app, verify your email, and start chatting. You do not need a computer or your own server. Free usage limits apply. This version offers no in-app subscriptions or purchases. USE YOUR OWN MODELS Connect an OpenAI-compatible server, including LM Studio, or download an on-device model on a supported iPhone. These options do not require a Spike account. Model downloads need available storage, and on-device performance depends on your iPhone and the selected model. CONNECT YOUR COMPUTER Use an account-linked Runtime from Spike Studio on your computer, and follow Agent work from your iPhone. Computer and Runtime setup are required for these optional features. KEEP YOUR CONVERSATIONS TOGETHER Sign in with the same Spike account across devices to sync encrypted conversations. Organize chats in projects and choose tools for the task at hand. Tools that use iPhone features request the relevant permissions. Cloud chats are processed by Spike Cloud; on-device models run on your iPhone; a connected server processes the chats you send to it. Choose the option that fits your needs.
Offline AI
Run powerful AI models directly on your device without an internet connection. Your conversations remain private, as all data stays on your iPhone. Explore and download various AI models, customize chat personas, and even perform web searches for up-to-date information.
- On-device AI model execution
- Complete offline functionality
- Private by design, no data leaves device
- Browse and download AI models
- Customizable chat modes and personas
- Integrated web search for current events
- AI news and trending model discovery
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Run powerful AI models directly on your iPhone — no internet required, no data ever leaves your device. PRIVATE BY DESIGN Every response is generated on your device using Apple's Metal GPU. No API keys. No cloud. No tracking. No account. ASK ACROSS YOUR DOCUMENTS Save contracts, manuals or notes to your library, then ask about them from any chat. The passages that answer your question are found for you, so a long PDF no longer has to be cut short. Every answer shows which file it came from. CREATE IMAGES Describe a picture and it's generated on your device. Nothing you type or make is uploaded. SEE AND SPEAK Vision models read text in photos and describe what they see. Voice mode reads replies aloud, hands-free. BROWSE & DOWNLOAD MODELS Explore curated categories — Reasoning, Coding, General and Creative — filtered to fit your device's RAM. Search HuggingFace live to find any model. CHAT MODES & PERSONAS Seven response modes — LaTeX, Code, Concise, Step-by-step, ELI5, Formal and Email Reply. Give your AI a custom Persona with a name, icon and system prompt. WEB SEARCH Research Mode searches the web before responding, so any model can answer about current events. Off by default. STAY INFORMED The Discover tab surfaces the latest AI news, updated through the day. OPTIMIZED FOR IPHONE Best results on iPhone 15 Pro and later with 8GB RAM. Pro unlocks voice mode, model arena, vision models and image generation. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://myai.twinsuns.dev/privacy
Screenshots
Verdict
The clearest difference is rating: Offline AI at 4.1 against Spike AI's 3.1. Offline AI also leads on update cadence (every 4 days vs every 8 days). Spike AI's advantage is in-app purchases (none vs 3) and review sentiment (71% vs 50%). On price, ratings volume, ads 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. Offline AI sells 3 in-app purchases, starting at $4.99 per month. Spike AI asks for nothing beyond the download.
Offline AI holds the better App Store score, 4.1 against 3.1. Both are backed by a comparable volume of ratings — 11 and 12 respectively. Written reviews complicate that: 71% of Spike AI's written reviews are positive against 50% of Offline AI's, so the app with the better star average is not the one people write more warmly about.
Spike AI ships an update every 8 days, Offline AI every 4 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.
| Parameter | Spike AI | Offline AI |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (11 ratings) | 4.1 (12 ratings) — better |
| Positive reviews | 71.4% of reviews — better | 50.0% of reviews |
| Number of ratings | 11 | 12 — better |
| Update frequency | Every 8 days | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 121 MB | 52 MB |
| Age rating | 4+ | 17+ |
| Developer | Jan Stellmann | Twin Suns LLC |
Customer experience
Spike AI
Offline AI
In-app purchases
Spike AI
No in-app purchases
Offline AI
- Pro Monthly$4.991 Month
- Pro Annual$29.991 Year
- Pro Lifetime$39.99
