Spike AI vs SlagBot
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.
SlagBot
This AI assistant prioritizes your privacy by not storing conversations, using your data for training, or requiring an account. It provides instant answers, writing assistance, coding help, research, and planning.
- Privacy-focused AI assistant
- No conversation storage
- No data used for training
- Instant answers to questions
- Writing and coding assistance
- Research and planning tools
- Image analysis (Pro)
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SlagBot — Private AI Assistant SlagBot is the AI assistant that actually respects your privacy. Get instant answers, help with writing, coding, research, planning, and more — without giving up your data. What makes SlagBot different: Your conversations are never stored. Your data is never used for training. Your identity is never required. No account. No tracking. No trace. What you can do with SlagBot: - Get instant answers to any question - Write emails, essays, and messages - Debug code and solve technical problems - Brainstorm ideas and plan projects - Analyze photos and images (Pro) - Research any topic in depth SlagBot Pro (available via monthly subscription) unlocks image creation, image analysis, and access to the latest frontier AI model. Your privacy isn't a feature. It's the foundation. Terms of Service: https://www.slagbot.ai/terms Privacy Policy: https://www.slagbot.ai/privacy
Screenshots
Verdict
The clearest difference is rating: SlagBot at 4.9 against Spike AI's 3.1. SlagBot also leads on review sentiment (100% vs 71%). Spike AI's advantage is in-app purchases (none vs 5) and update cadence (every 8 days vs every 4 weeks). 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. SlagBot sells 5 in-app purchases, starting at $2.99 per 7 days. Spike AI asks for nothing beyond the download.
SlagBot holds the better App Store score, 4.9 against 3.1. Both are backed by a comparable volume of ratings — 11 and 10 respectively. Written reviews point the same way: 71% of Spike AI's written reviews are positive against 100% of SlagBot's.
Spike AI ships an update every 8 days, SlagBot every 4 weeks. Both last shipped on November 5, 2026.
| Parameter | Spike AI | SlagBot |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (11 ratings) | 4.9 (10 ratings) — better |
| Positive reviews | 71.4% of reviews | 100.0% of reviews — better |
| Number of ratings | 11 — better | 10 |
| Update frequency | Every 8 days — better | Every 4 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 121 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | Jan Stellmann | Orbiter Agent |
Customer experience
Spike AI
SlagBot
In-app purchases
Spike AI
No in-app purchases
SlagBot
- SlagBot Core (Weekly)7 Days trial$2.997 Days
- SlagBot Core (Monthly)7 Days trial$4.991 Month
- SlagBot Pro (Weekly)7 Days trial$9.997 Days
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- SlagBot Pro (Monthly)7 Days trial$19.991 Month
- SlagBot Pro (Yearly)7 Days trial$99.991 Year
