Asomium review for indie App Store developers

Asomium is a native Mac app that brings App Store Connect work into one window: metadata in every locale, AI translation, screenshot design, keyword tracking, revenue charts and build uploads. It is built for indie iOS and Mac developers who ship their own apps and want to stop juggling browser tabs and separate ASO tools.

What Asomium is

Asomium is a paid macOS companion for App Store Connect, sold as a notarized download outside the Mac App Store and billed through Lemon Squeezy. It is made by Native First, a sole proprietorship in Belgrade, Serbia, which also publishes the ThinkBud, RoleBud and PromptKit apps.

The app is written in SwiftUI, with no Electron or web shell. You paste an App Store Connect API key, which stays in your Mac's Keychain, and Asomium talks to Apple's API directly. The current download is version 2.2.0, and it needs macOS 15 Sequoia or later.

Who Asomium is for, and who should skip it

Asomium fits a solo developer or small studio that ships several iOS, iPadOS or macOS apps, localizes them into many languages, and does its own App Store optimization. It also suits developers who already work with Claude Code or Cursor, since a bundled MCP server lets an AI client drive the release workflow.

Skip it if you only need keyword rank tracking, if you work on Windows or Linux, or if you publish Android apps too, since it only covers Apple's App Store. Larger teams should note that each license is tied to a person, and the FAQ says multi-seat plans are still on the roadmap.

Asomium features and the release workflow

Asomium groups its features into seven panels that mirror App Store Connect tabs: Workspace, Pipeline, Metadata, Screenshots, ASO, Ship and Revenue. You connect your account once, pull your apps, then edit, translate, design and ship from the same window.

Workspace and release pipeline

The Home view sorts your apps by state (needs attention, with Apple, live) and shows last week's proceeds and first-time downloads across all apps. A pipeline bar runs Metadata, Screenshots, Build, Submit, Review and Live above each app, with a checklist that reads export compliance and the App Review contact from App Store Connect. Background checks send a notification when Apple approves, rejects or releases a build.

Metadata and AI translation

Title, subtitle, description, keywords and What's New appear in one grid across every locale, with live character counters for each field's limit. Missing fields can be translated with Claude using a per-app brand voice, glossary and protected terms, and changes go back to Apple in one push with a diff preview. An "Expand to all English locales" option copies en-US into en-AU, en-CA, en-GB, en-IN and en-SG with spelling adjusted for each market.

Screenshots, ASO and shipping

The screenshot designer uses real iPhone 6.9 inch, iPad Pro and Mac device frames, layered text and themes, then renders a translated set for every locale. The ASO panel logs rank, popularity, difficulty and an opportunity score per keyword and locale each day, finds terms through an App Store autocomplete sweep, compares competitors side by side and drafts replies to reviews. The Ship panel runs xcodebuild archive, uploads the build, attaches it to your version and can send it to TestFlight groups.

Revenue and MCP server

The Revenue panel pulls Sales Reports and Apple Analytics to chart impressions, page views, downloads and proceeds over 7, 30 or 90 days, converts currencies at the ECB rate as a marked estimate, and overlays your metadata pushes and keyword changes. A companion MCP server exposes 42 release actions to Claude Code, Claude Desktop, Cursor and Windsurf on both billing options.

Asomium pricing

Asomium has one plan, Asomium Pro, at €14.99 a month or €119.99 a year (about €9.99 a month). AI translation, ASO audit and revenue analysis are included, so there is no separate AI key or compute bill. Prices are in euros, with VAT and sales tax handled by Lemon Squeezy. Prices checked 6 Nov 2026.

There are two ways to try it. The download gives 14 days of full access with no card and no account, starting the first time you pull an app, after which the app turns read-only. The subscription checkout also offers a 3-day free trial with a card. New purchases get a 14-day, no-questions refund, but renewal charges are not normally refunded.

What it costs an indie developer

A developer who ships a release every month or two pays €119.99 a year on the annual plan, which the vendor says pays for itself by month nine against monthly billing. Someone who only needs it for one or two releases a year could pay €14.99 for each busy month and cancel in between.

What users say

Asomium has no App Store ratings, because it is sold outside the Mac App Store, and it is a young product from a small sole proprietorship. The only results on its site are the vendor's own: it says the English locale expansion alone has paid for Asomium on the apps it ships with. Treat that as a vendor claim.

Hard facts: platforms, privacy and company

Asomium runs on macOS 15 or later and manages iOS, iPadOS and macOS apps, with the FAQ adding tvOS and visionOS. Credentials stay in the Keychain, App Store Connect calls go straight to Apple, and only AI requests pass through the vendor's Cloudflare Worker. In-app analytics use TelemetryDeck without tracking IDs. Updates arrive through Sparkle with signed downloads. The seller is Native First Beograd-Zemun, and the terms fall under Serbian law.

What changed recently

Asomium is new and moving fast. The pricing section is dated 16 May 2026, the terms and refund policy took effect on 17 May 2026, the current privacy policy took effect on 31 May 2026, and the site now promotes Asomium 2.0 with build 2.2.0 as the current download.

Limits and drawbacks

Asomium is Mac only, Apple only and tied to one maker, so you depend on a single developer keeping pace with App Store Connect changes. License rules conflict: the FAQ says one active Mac at a time, while the terms allow up to three Macs at once. There is no team or family plan yet. It can edit your Xcode version numbers when you ship, so keep your project in git.

Asomium alternatives

Most Asomium alternatives are ASO-only tools that track keywords and rankings but leave metadata, screenshots and builds to you. They cost less effort to learn if keyword tracking is all you need.

• ASO Suite: an App Store keyword rank tracker with popularity, difficulty and opportunity scores, competitor comparison and a CLI; pick it if you only want keyword data.
• Altis ASO: a Mac app for iOS keyword tracking and low-competition keyword discovery with a free tier for one app; pick it to track one app for free.
• Astro: an ASO keyword research and rank tracking app that Asomium's own FAQ calls excellent at that job; pick it if you want a focused keyword tool.
• Rankd: another keyword and ranking tool named in Asomium's FAQ; pick it if you prefer a simpler rank tracker over a full release workflow.

Verdict

Asomium is an ambitious, privacy-minded Mac app that replaces several tabs and tools for indie Apple developers, at a fair €119.99 a year. I would pick it if you localize and ship several apps yourself and like working with Claude or Cursor. If you only track keywords, or you need a team plan, a simpler ASO tool is the better buy.