ASOStacks vs Sonar
ASOStacks
asostacks.comSonar
trysonar.appSide by side
| Figure | ASOStacks | Sonar |
|---|---|---|
| Price from | $19/mo | $29/mo |
| Free plan | Yes | — |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | Yes | — |
| Android | Yes | — |
| API | — | Yes |
| Plans published | 3 | 3 |
| Spec score · App Store Optimization Software | 8.0 (#11) | 7.4 (#25) |
| Integrations | The homepage says ASOStacks is available as an MCP connector for Claude. | Sonar offers a REST API, CLI, and MCP server, with setup guides for Claude, Claude Desktop, Cursor, Codex, and other MCP clients. |
| Keyword research | It scores up to 20 keywords across 5 countries at once using popularity, seven-factor difficulty, and opportunity scores. | It provides search popularity, a proprietary difficulty score, and AI keyword suggestions checked against live store autocomplete. |
| Purpose | ASOStacks is a SaaS platform providing app store optimization tools for iOS and Android apps. | Sonar is an ASO platform for the iOS App Store and Google Play, aimed at indie developers and small agencies managing app portfolios. |
| Rank tracking | Searched keywords are tracked automatically, with daily rank checks at 6:00 UTC, history, deltas, and sparklines. | Subscribers get daily keyword rank tracking across both stores and all countries, with historical rank information. |
| Support | The Studio plan includes priority support. | The maker says support emails go to the founder and are answered within one business day. |
Plans
In their own words
ASOStacks
ASOStacks is a web and mobile SaaS platform for optimizing app store listings for iOS and Android apps. Its keyword research scores as many as 20 terms across five countries using popularity, difficulty, and opportunity measures. It automatically checks tracked keyword rankings daily at 6:00 UTC and provides history, changes, and sparklines. The Country Opportunity Finder scans 30 App Store and Google Play markets for a keyword, while download estimates cover positions 1 through 20 using TTR curves. Per-keyword competitor analysis includes up to 25 competitors, with ratings, review velocity, market age, publisher diversity, and tier analysis. It uses publicly available metadata, ratings, and reviews from Apple App Store and Google Play. ASOStacks also offers an MCP connector for Claude, and says no API keys are needed. The free plan is free; Pro costs $19 a month and Studio costs $49 a month. Studio includes priority support, while its API access is listed as coming soon.