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Track keywords, discover opportunities, analyze competitors and get AI-powered ASO suggestions to grow your app visibility on the App Store & Play Store.

The modern platform for creating, sharing, and collaborating on AI prompts. Advanced version control and real-time testing.

Website, pricing, platforms and company facts side by side.
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| Website | applyra.io | diffyn.com |
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| Company | Startup from France · 1 - 9 employees · 2026 | — |
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In their own words, as submitted to SaaSHub.


Applyra is a comprehensive tool designed to enhance your app's visibility on the App Store and Play Store through AI-powered ASO insights. It offers a range of powerful features to help you track keywords, discover new opportunities, and analyze competitors. Key features include: - Keyword...
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As answered by people managing Applyra.io and Diffyn.
Applyra.io's answer
Applyra is an App Store Optimization tool built specifically for indie developers and small studios, not enterprises. It delivers the essentials of expensive ASO suites, daily keyword rank tracking, keyword discovery, competitor analysis, and AI-powered listing suggestions, at a flat $9.99 per month with a genuinely usable free tier. No per-seat pricing, no agency contracts, no dashboard you need training to use.
Diffyn's answer:
Addresses workflow and change management on LLM prompts, provide teams with traceability and visualization of tests across multiple models, provide deeper understading into efficiency of these prompts.
Applyra.io's answer
Tools like AppTweak and Sensor Tower start well above $60 per month and are built for agencies and large teams. Applyra covers the core ASO workflow, tracking rankings across the App Store and Google Play, finding keywords competitors rank for, and getting AI suggestions to improve your listing, for $9.99 per month flat with unlimited apps and keywords. It is affordable, focused, and fast to act on, which fits solo founders who need results without the cost or complexity.
Diffyn's answer:
Diffyn is the platform that specializes on both change management and multi-model analysis.
Applyra.io's answer
Next.js (App Router) and React on the front end, TypeScript throughout, Supabase (PostgreSQL and authentication), Tailwind CSS, and Stripe for payments. It uses App Store and Google Play data pipelines for ranking data, and large language models via the Vercel AI SDK for the AI-powered keyword and metadata suggestions. Hosted on Vercel.
Diffyn's answer:
React, Next.js, POSTGRESQL
Applyra.io's answer
Indie app developers, solo founders, and small mobile studios who publish on the App Store and Google Play and want to grow their organic visibility without paying enterprise ASO prices.
Diffyn's answer:
Professionals incorporating LLMs or AI tools in their workflow and wants to keep track of changes and test their prompts.
Applyra.io's answer
Applyra was built by Aurélien Weiss, an indie developer in France, out of frustration that serious ASO tools were priced for agencies and enterprises. He built the tool he wanted for his own apps: daily rank tracking, keyword research, competitor analysis, and AI-driven listing suggestions, at a price an indie can actually afford. It launched in 2025 and now tracks thousands of apps for developers worldwide.
Diffyn's answer:
I started working on Diffyn when I notice that prompting has become an essential part of work across many industries. While there are version control platofrms like github, they are not designed for just prompt management are can be overkill such applications, it is also not integrated natively with various LLMs and relevant tools for users to validate ideas and visualise results properly.
Applyra.io's answer
Applyra serves indie developers and small studios worldwide rather than large enterprises, tracking thousands of apps across the App Store and Google Play. Its users are mostly solo developers and small teams.
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