AppSigma vs Astro (2026): which should you pick?
As of Oct 23, 2026, AppSigma and Astro share a 2.2 GPA, both have a free plan, and Astro starts cheaper, at $9 a month against $19.99 a month.
Checked Oct 23, 2026 · graded Oct 23, 2026 by ToolGPA
AppSigma grades higher on platforms. Astro grades higher on value for money and ease of use. They get the same grade on the free plan and features.
Price, platforms and features side by side. The table says where each price was read and when.
AppSigma
App Store keyword tracking and review analysis with an MCP server
Astro
Mac app for App Store keyword research and daily rank tracking
Which one is for you
Pick AppSigma if
- Fits if you work in Claude, ChatGPT or Cursor and want App Store ranks inside it
- Works for small teams tracking up to 10 iOS apps on one $19.99 plan
Look elsewhere if
- Skip it if you have an Android app, as Google Play isn't covered
- Tight if you're staying free, since the free plan tracks 1 app and 5 keywords in one market
- Watch out: paid plans list unlimited keywords, but daily positions are described as covering up to 500 per app
- Watch out: only monthly prices are shown, with no discount for paying yearly
- Pricey if more than 3 people need access, since 10 team members means Pro at $49.99 a month
Pick Astro if
- Fits if you're an indie iOS or Mac developer doing your own keyword work
- Works for people tracking thousands of App Store keywords who want one flat yearly price
Look elsewhere if
- Skip it if your app is on Google Play too, as the pages read only cover Apple's App Store
- Not for you if you work on Windows or in a browser, as it runs only on Macs with macOS 14 or later
- Watch out: ranks only update while the app is open on your Mac, and a license covers one Mac at a time
- Tight if you stay free, since the free version tracks 10 keywords without popularity or difficulty
- Watch out: billing is yearly only at $108, and suggestions come from Astro users' searches, so niche apps may get few
How we grade them
| 2.2GPAAppSigmaFair | 2.2GPAAstroFair | |
|---|---|---|
| Value for money | CStarter is $19.99 a month for 10 apps and 3 team members, about this category's $19 middle, and only monthly prices are listed. Pro is $49.99 for unlimited apps and 10 people. | B$108 a year, about $9 a month, for unlimited apps and keywords, inside this category's cheaper quarter, which runs to $10. Billing is annual only, and the license works on one Mac at a time. |
| Free plan and trial | CA free plan with no card: 1 app and 5 keywords in one market with daily positions, the newest 500 reviews analyzed and 1,000 API credits. Five keywords is a cap you'll hit straight away. | CThe free version tracks up to 10 keywords with daily updates, but leaves out the popularity and difficulty scores, which is most of the point. No trial is on record. |
| Features | CDaily ranks with popularity and difficulty, competitor keyword gaps, visibility scores, AI review labels, 180 days of chart history and alerts. The gap is in its own listing: App Store only, with Google Play not mentioned. | CPopularity and difficulty scores, daily rank tracking, keyword suggestions, competitors' keywords, ratings across every country's store and a local MCP server. It does App Store keyword work fully, but that's a smaller job, and Google Play isn't mentioned. |
| Ease of use | CNo rating on record. You add apps, keywords and markets in a web dashboard, or connect the MCP server to your assistant, before it tells you much. | BNo rating on record. It's a Mac app you install, then you search a keyword or paste an App Store link and add your app, with no store account to connect. |
| Platforms and integrations | BWeb only, with no desktop or phone app. A REST API and an MCP server on every plan reach Claude, ChatGPT and Cursor, and it links to App Store Connect and Figma. | DMac only, on macOS 14 or later, one Mac per license. It links to Apple Ads and DeepL, and its MCP server works with Claude, Cursor and VS Code. |
| Best for | App Store keyword tracking over MCP | App Store keyword research on a Mac |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: AppSigma and Astro. How we grade
Price against what you get
AppSigma starts at $19.99 a month and scores 2.3 out of 4 on features, ease of use and platforms. Astro starts at $9 a month and scores 2.0.
AppSigma scores higher, and starts $10.99 a month higher: the question is whether the extra is worth that to you. Of the other app store optimization tools on the chart, 3 score higher than AppSigma for less, and 4 score higher than Astro for less.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Where they differ
At a glance
| AppSigma | Astro | |
|---|---|---|
| Pricing | Free plan | Free plan |
| Starts at | $19.99 per month for 10 apps and 3 team members | $9 per month, billed annually ($108 a year) |
| Free plan | 1 user, 1 app with 5 keywords in one market, daily positions, the newest 500 reviews analyzed, MCP access and 1,000 API credits. No card needed. | The free version tracks up to 10 keywords, without the popularity and difficulty scores. |
| Free trial | None listed | None listed |
| Web | ||
| macOS | ||
| Made by | AppSigma | 28 bit S.R.L. |
| Price read from | appsigma.io | tryastro.app |
| Checked | Oct 23, 2026 | Oct 23, 2026 |
Worth knowing
AppSigma
- It covers Apple's App Store only; the site says its data comes from the public iTunes Search API, and Google Play is not mentioned.
- The free plan tracks just 1 app and 5 keywords in one market.
- Only monthly prices are shown; no annual discount is listed.
- Paid plans list unlimited tracked keywords, but daily positions are described as covering up to 500 keywords per app.
Astro
- It runs only on Macs with macOS 14 or later, and each license is active on one Mac at a time.
- It covers Apple's App Store (iOS, iPadOS, macOS and visionOS apps); the pages read make no mention of Google Play.
- Billing is annual only, at $108 a year; refunds can be requested within 14 days.
- Rankings update only while the app is open on the Mac.
Key features
AppSigma
- Daily keyword tracking
- Positions are re-checked after a daily 02:00 UTC crawl, with movers, best-ever rank, and popularity and difficulty scores; paid plans cover up to 500 keywords per app.
- Competitor keyword gaps
- Finds the apps ranking next to yours, compares visibility side by side and lists keywords where a rival ranks and you do not.
- AI review analysis
- Labels each review by sentiment against its stars, review type, complaint and praise topics, and flags such as a surprise charge.
- Chart history
- Top-chart positions overall and by genre in every country, with 180 days of history and app releases marked on the timeline.
- MCP server and REST API
- An MCP server with 22 tools connects to Claude, ChatGPT or Cursor on every plan; the REST API is billed in credits, one per row of data.
- Weekly digest and alerts
- Paid plans send a Monday email per app with keyword and competitor moves, plus ranking alerts at thresholds you set.
Astro
- Popularity and difficulty scores
- Popularity comes from Apple Ads; difficulty is Astro's own estimate of how hard it is to reach the top 10. Both need the paid license.
- Daily keyword rank tracking
- Keywords are re-checked every 24 hours while the app is running, with position changes and a day-by-day ranking chart.
- Keyword suggestions
- Lists keywords an app ranks or has ranked for, drawn from searches made by all Astro users, so new or niche apps may get few suggestions.
- Competitor keywords
- Paste a competitor's App Store link to see the keywords it ranks for in a chosen store, sorted by popularity and difficulty.
- Ratings across stores
- A ratings view sums ratings from every country's App Store, with daily changes, per-store counts and a chart over time.
- MCP server (beta)
- A local MCP server, switched on in Settings, lets AI assistants such as Claude, Cursor and VS Code Copilot query Astro's data.
Plans
AppSigma
Free$0
1 app and 5 keywords in one market with daily positions, the newest 500 reviews analyzed, and browsing of any app's data.
Starter Monthly$19.99
per month for 10 apps and 3 team members
Every feature: keyword tracking in any market, competitor gaps, visibility scores, AI review analysis and 50,000 API credits a month.
Pro$49.99
per month for unlimited apps and 10 team members
The same features as Starter with unlimited apps, 10 team members and 250,000 API credits a month.
EnterpriseCustom
Custom plans for larger teams, arranged with the sales team.
Astro
Free version$0
Up to 10 keywords with daily rank updates; popularity and difficulty scores are left out.
Single Mac License$9
per month, billed annually ($108 a year)
Unlimited apps and keywords, popularity and difficulty data, suggestions, competitor keywords, ratings analysis and translations.
Common questions
Which is cheaper, AppSigma or Astro?
As of Oct 23, 2026, Astro is cheaper to start with: $9 a month, against $19.99 a month for AppSigma. AppSigma starts at $19.99 per month for 10 apps and 3 team members, and Astro starts at $9 per month, billed annually ($108 a year).
Which has a free plan, AppSigma or Astro?
As of Oct 23, 2026, both AppSigma and Astro have a free plan.
Which platforms do AppSigma and Astro run on?
As of Oct 23, 2026, only AppSigma lists a web app and only Astro lists a macOS app. A platform missing from a listing is one its maker's pages did not mention.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.