Spike Studio vs Apex
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Spike Studio
Run powerful AI models locally on your device without cloud dependence. Enjoy private, fast responses and full control over your AI experience. Ideal for developers and AI enthusiasts seeking unlimited model usage and zero tracking.
- Run AI models locally
- No cloud dependence
- Private data processing
- Zero cloud costs
- Unlimited model usage
- Instant responses
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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.
Apex
This AI assistant helps you chat, analyze images, generate content, and search the web. It offers personalized responses, customizable personalities, and real-time conversation syncing across devices. An Apple Watch extension allows for on-the-go access.
- Text and voice chat
- Image analysis and generation
- Web search for up-to-date information
- Personalized responses with smart memory
- Customizable personality and reasoning modes
- Real-time conversation syncing
- Apple Watch extension
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Apex for iOS and watchOS. Your AI assistant, always with you. Chat with Apex via text or voice, analyze images, generate content, search for up-to-date information online, and much more. Plus, with a Kiwyi account, you can sync your conversations in real time across all your devices. With Apex, you can: · Generate images: create detailed images from a description or transform existing ones. · Analyze images: upload images from your gallery or use the camera so Apex can analyze and help you understand them. · Search the web: access up-to-date information and discover what’s happening right now. · Smart memory: Apex can remember useful information about you to provide increasingly personalized responses. · Choose its personality: configure how you want Apex to behave and tailor its responses to your style. · Speed vs. reasoning: choose between quick answers and a deeper reasoning mode for tasks requiring more analysis. · Location-aware responses: grant location access to get relevant information based on where you are. · Apex on your Apple Watch: use the watchOS extension to literally take your assistant with you wherever you go. · Smart models: Apex combines advanced AI models to deliver useful, accurate, and natural responses. An assistant for every moment: · Apex offers a generous monthly allowance and various plans to suit every type of user, from occasional to heavy, daily use. · Create a Kiwyi account to sync your conversations in real time and pick up right where you left off, wherever you are. Discover Apex and experience a new way of interacting with artificial intelligence.
Screenshots
Verdict
The clearest difference is rating: Apex at 5.0 against Spike Studio's 3.1. Spike Studio's advantage is in-app purchases (none vs 4) and ratings volume (11 vs 1). On price, update cadence, 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. Apex sells 4 in-app purchases, starting at $6.99 per month. Spike Studio asks for nothing beyond the download.
Apex holds the better App Store score, 5.0 against 3.1. That said, the two scores are not equally well evidenced: Spike Studio has 11 ratings behind it against 1, so its average is the more settled of the two.
Spike Studio ships an update every 8 days, Apex weekly. The most recent releases landed on October 6, 2026 and October 9, 2026 respectively.
| Parameter | Spike Studio | Apex |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (11 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 71.4% of reviews | — |
| Number of ratings | 11 — better | 1 |
| Update frequency | Every 8 days | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, Apple Watch | iPhone, Apple Watch |
| Requires iOS | 17.0 — better | 26.5 |
| Further details — not scored | ||
| Size | 118 MB | 13 MB |
| Age rating | 4+ | 12+ |
| Developer | Jan Stellmann | Xavier Pineda |
Customer experience
Spike Studio
Apex
In-app purchases
Spike Studio
No in-app purchases
Apex
- Kiwyi Pro$6.991 Month
- Kiwyi Ultra (Monthly)$9.991 Month
- Kiwyi Pro (Yearly)$69.991 Year
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- Kiwyi Ultra (Yearly)$99.991 Year









