Promptmate
Apps
Build AI Powered Apps for superior efficiency.
Like Horizon-ui, Promptmate is in the Apps category. Both are freemium. Worth comparing on the detail page.
We've curated 50 of the best alternatives to Horizon-ui, ranked by feature overlap, topic similarity, user ratings, and popularity. Promptmate, FlutterFlow AI Gen, and Singlebase lead the list as the closest matches.
Updated May 18, 2026
The list includes 50 freemium, so whether you're looking for a no-cost replacement or a more capable paid tier, there's an option to compare. Horizon-ui itself is freemium, which makes freemium alternatives the most natural starting point.
Many of these tools cluster around use cases like Api, App Development, Natural Language Processing, and No Code — the same problem spaces Horizon-ui addresses. Cross-referencing tools that overlap on multiple topics gives a more reliable signal than category alone, because two products in the same category can still serve very different workflows.
Our ranking weighs eight signals: shared category, topic overlap, feature overlap, name and description text similarity (via PostgreSQL's pg_trgm and tsvector), Bayesian-smoothed user ratings, pricing-model match, popularity, and editorial overrides. Scores are then normalized within each tool's own candidate pool so the top match always represents the strongest available alternative.
Use the table of contents below to jump to free or paid alternatives, or scroll down to compare each option side-by-side with Horizon-ui.
Ranked by compatibility score
Apps
Build AI Powered Apps for superior efficiency.
Like Horizon-ui, Promptmate is in the Apps category. Both are freemium. Worth comparing on the detail page.
Apps
Generate stunning app designs with code in one click.
Like Horizon-ui, FlutterFlow AI Gen is in the Apps category. Both are freemium. Worth comparing on the detail page.
0 free and 50 freemium options.
26 additional candidates
Promptmate ranks as the highest-scoring alternative to Horizon-ui, based on shared category, topic overlap, feature similarity, and user ratings. Ratings are still being collected for this tool.
Yes — 0 fully free and 50 freemium alternatives are available, including Promptmate, FlutterFlow AI Gen, and Singlebase.
Promptmate is similarly priced (freemium) and sits in the same category (Apps). View its detail page to compare features, integrations, and reviews side-by-side.
Top Apps alternatives include Promptmate, FlutterFlow AI Gen, Singlebase, and Shuttle. These tools share the same primary category and have meaningful topic overlap with Horizon-ui.
Neither Horizon-ui nor Promptmate has user ratings yet — be the first to review either tool to help future visitors compare them.
Apps
AI-powered backend platform for faster app development
Like Horizon-ui, Singlebase is in the Apps category. Both are freemium. Worth comparing on the detail page.
Apps
Deploy apps instantly from a single prompt.
Like Horizon-ui, Shuttle is in the Apps category. Both are freemium. Worth comparing on the detail page.
Apps
Build and deploy AI applications in minutes
Like Horizon-ui, Stack AI is in the Apps category. Both are freemium. Worth comparing on the detail page.
Apps
Build your app in 5 minutes, no coding required.
Like Horizon-ui, Sutro is in the Apps category. Both are freemium. Worth comparing on the detail page.
Apps
Build a no-code AI app in minutes.
Like Horizon-ui, Imagica is in the Apps category. Both are freemium. Worth comparing on the detail page.
Apps
Add natural language capabilities to your apps easily.
Like Horizon-ui, Chariotai is in the Apps category. Both are freemium. Worth comparing on the detail page.
Apps
Just chat to make an app
Like Horizon-ui, AppAsap is in the Apps category. Both are freemium. Worth comparing on the detail page.
Apps
Build custom business apps without code
Like Horizon-ui, Fliplet is in the Apps category. Both are freemium. Worth comparing on the detail page.
Apps
Build predictive models on the modern data stack.
Like Horizon-ui, Continual is in the Apps category. Both are freemium. Worth comparing on the detail page.
Apps
Build computer vision apps without code
Like Horizon-ui, Datature is in the Apps category. Both are freemium. Worth comparing on the detail page.
Apps
Accelerate AI app development 10x with no-code/low-code
Like Horizon-ui, Instill Tech is in the Apps category. Both are freemium. Worth comparing on the detail page.
Apps
Empower AI teams to build, train, and automate.
Like Horizon-ui, Labelbox is in the Apps category. Both are freemium. Worth comparing on the detail page.
Apps
Unite AI, NoCode, and Code to build SaaS tools fast
Like Horizon-ui, MarsX is in the Apps category. Both are freemium. Worth comparing on the detail page.
Apps
Empower teams to build AI-powered video and audio apps faster.
Like Horizon-ui, Sieve is in the Apps category. Both are freemium. Worth comparing on the detail page.
Apps
Transform ideas into AI apps in minutes
Like Horizon-ui, UBOS is in the Apps category. Both are freemium. Worth comparing on the detail page.
Apps
Deploy LLMs safely with mission-critical AI tools.
Like Horizon-ui, HoneyHive is in the Apps category. Both are freemium. Worth comparing on the detail page.
Apps
Create AI Apps without code in minutes.
Like Horizon-ui, BuildAI.Space is in the Apps category. Both are freemium. Worth comparing on the detail page.
Apps
Connect AI models visually, deploy instantly.
Like Horizon-ui, TakomoAI is in the Apps category. Both are freemium. Worth comparing on the detail page.
Apps
Prototype and deploy generative AI apps for engineers.
Like Horizon-ui, LastMile is in the Apps category. Both are freemium. Worth comparing on the detail page.
Apps
Build AI tools without code in seconds.
Like Horizon-ui, FormWise is in the Apps category. Both are freemium. Worth comparing on the detail page.
Apps
Build LLM apps visually with open-source tools
Like Horizon-ui, FlowiseAI is in the Apps category. Both are freemium. Worth comparing on the detail page.
Apps
Simple AI tools for everyday tasks
Like Horizon-ui, Lowtech is in the Apps category. Both are freemium. Worth comparing on the detail page.
44 more free/freemium alternatives listed below. Browse all Horizon-ui alternatives ↓
50 free or freemium alternatives to Horizon-ui on /tools/horizon-ui/alternatives.
Like Horizon-ui, Portkey is in the Apps category. Both are freemium. Worth comparing on the detail page.
