Comparison

Spike Studio vs Stable Diffusion

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

Head to head
About

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.

Highlights
  • Run AI models locally
  • No cloud dependence
  • Private data processing
  • Zero cloud costs
  • Unlimited model usage
  • Instant responses
Features
Read full description

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.

About

Stable Diffusion

Transform your imagination into stunning artwork with advanced AI. Describe your vision or upload a reference image to generate unique art in seconds. Explore niche styles and create with precision control.

Highlights
  • Stable Diffusion Engine
  • Image-to-Image transformations
  • Niche art styles
  • Multiple aspect ratios
  • Community gallery
  • Fast processing
Features
Read full description

Artrix transforms your ideas into stunning artwork powered by the cutting-edge Stable Diffusion engine. Simply describe what you imagine, upload a reference picture, and watch your vision come to life in seconds with unmatched detail and creative control. We utilize advanced Stable Diffusion architecture for quality assurance. No shortcuts, no compromises—just the most flexible, powerful, and customizable AI image generation available today. FEATURES Stable Diffusion Engine – Next-generation image synthesis delivering photorealism, intricate details, and stunning digital art. Advanced ControlNet & Image-to-Image – Transform reference photos with precision, maintaining structure while completely reimagining style. Niche Art Styles – Explore unconventional, highly curated art styles that you won't find anywhere else. Multiple Aspect Ratios – Seamlessly generate in square, landscape, or portrait modes tailored for any platform. Explore Gallery – Share your masterpiece with the community and get inspired by others' creations. Blazing Fast Processing – High-resolution, high-quality results delivered in a matter of seconds. PERFECT FOR Artists exploring new creative directions and fine-grained style control. Designers needing rapid, highly specific visual concepts and layout variations. Content Creators seeking unique, custom-tailored imagery that stands out. Dreamers with vivid ideas waiting to be visualized exactly how they see them. SUBSCRIPTION Artrix Premium unlocks unlimited generations, reference image uploads, and priority processing. Choose weekly or yearly billing—cancel anytime. Start creating today. Your imagination, our AI. Terms: https://rapidnova.co/apps/artrix/terms-of-service Privacy Policy: https://rapidnova.co/apps/artrix/privacy-policy

Screenshots

Spike Studio4 screens
Stable Diffusion4 screens

Verdict

The call

The clearest difference is rating: Stable Diffusion at 4.4 against Spike Studio's 3.1. Stable Diffusion also leads on ratings volume (41 vs 11). Spike Studio's advantage is in-app purchases (none vs 2) and review sentiment (71% vs 60%). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Stable Diffusion sells 2 in-app purchases, starting at $6.99 per 7 days. Spike Studio asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Stable Diffusion holds the better App Store score, 4.4 against 3.1. Both are backed by a comparable volume of ratings — 11 and 41 respectively. Written reviews complicate that: 71% of Spike Studio's written reviews are positive against 60% of Stable Diffusion's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Spike Studio ships an update every 8 days, Stable Diffusion fortnightly. The most recent releases landed on October 6, 2026 and October 1, 2026 respectively.

Scorecard5 real differences · 5 level
Spike Studio versus Stable Diffusion: the parameters behind the verdict, then further details
ParameterSpike StudioStable Diffusion
PriceFreeFree
Rating3.1 (11 ratings)4.4 (41 ratings) — better
Positive reviews71.4% of reviews — better60.0% of reviews
Number of ratings1141 — better
Update frequencyEvery 8 days — betterFortnightly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, Apple WatchiPhone, iPad
Requires iOS17.016.0 — better
Further details — not scored
Size118 MB106 MB
Age rating4+12+
DeveloperJan StellmannRapidNova

Customer experience

Spike Studio

All ratings11 ratings
Positive54.5%
Neutral9.1%
Negative36.4%
Written reviews7 reviews
Positive71.4%
Neutral0.0%
Negative28.6%

Stable Diffusion

All ratings41 ratings
Positive82.9%
Neutral7.3%
Negative9.8%
Written reviews5 reviews
Positive60.0%
Neutral20.0%
Negative20.0%

In-app purchases

None

Spike Studio

No in-app purchases

2 purchases

Stable Diffusion

Subscriptions2
  • Weekly Premium Access$6.997 Days
  • Yearly Premium Access$39.991 Year

Questions

Is Spike Studio free?
Spike Studio is free to download, with no in-app purchases.
Is Stable Diffusion free?
Stable Diffusion is free to download, with in-app purchases available.
Which has better reviews, Spike Studio or Stable Diffusion?
Stable Diffusion is rated higher. Spike Studio averages 3.1 out of 5 from 11 ratings, while Stable Diffusion averages 4.4 from 41 ratings.
Do Spike Studio or Stable Diffusion have ads?
Neither Spike Studio nor Stable Diffusion shows ads.
Which is updated more often, Spike Studio or Stable Diffusion?
Spike Studio ships an update every 8 days, and Stable Diffusion fortnightly. Most recently, Spike Studio was updated on October 6, 2026 and Stable Diffusion on October 1, 2026.

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