Sonar vs AppTrendKit for indie iOS developers
Sonar is a focused ASO tool for indie developers: keyword research and rank tracking from $29 a month, with Google Play. AppTrendKit is the market side: download and revenue estimates for every iOS app, chart history and growth, with keyword research included and a free plan.
Prices and features checked on 11 October 2026. We make AppTrendKit, so check our claims against the sources at the bottom of the page.
Sonar and AppTrendKit side by side
| Feature | AppTrendKit | Sonar |
|---|---|---|
| Built for | Indie iOS developers, small studios and people sizing an app before they build or buy | Indie developers and small agencies doing ASO |
| Price | Free; Pro from $19 a month | $29 a month |
| Free plan | Yes: the 300 biggest apps, top charts, 10 keyword pages and the free tools without an account; 2 more app pages a day without one, 5 with a free account | Free ASO tools and an anonymous API tier; no free plan |
| Trial | Free plan instead of a trial; no credit card | 7 days |
| Download and revenue estimates for other apps | Every iOS app, one rounded figure with a confidence level: the 300 biggest apps free, every app with Pro | Not listed on its pricing or home page |
| A year of competitor estimates costs | $228 a year (Pro, billed yearly) | Not listed |
| App Store keyword research | Popularity, difficulty and keyword gap | Yes, including keyword gap |
| Google Play (Android) | Not yet (iOS only) | Yes |
| Ad intelligence | Which apps run Apple ads and how actively (no spend figures) | Not listed on its pricing page |
| API | Yes, with Pro | Yes, plus a CLI and MCP |
| Runs on | Web | Web |
What Sonar costs
Two plans with a 7-day trial, plus prepaid API credits.
| Sonar plan | Monthly | Yearly | What it includes |
|---|---|---|---|
| Indie | $29 a month | $24.17 a month billed yearly | 10 apps, 2,500 keywords, API, CLI and exports |
| Agency | $149 a month | $1,490 a year | 50 apps, 10,000 keywords, 5 seats, white-label reports |
What AppTrendKit costs
Free to start; Pro is $26.99 a month, or $19 a month billed yearly ($228 a year). The first 50 Pro customers keep today's price for as long as they stay subscribed; the offer closes on 31 December 2026.
When to choose Sonar
- Keyword ranking is the job: daily rank tracking for thousands of keywords in every country.
- You need Google Play keywords too.
- You want a CLI and an MCP server for ASO work.
When to choose AppTrendKit
- You want to know what competing apps earn and download, not only where they rank.
- You want a free plan rather than a trial.
- You size niches before building: top earners, chart history and weekly growth.
How AppTrendKit gets its numbers
Several times a day we record where every app sits on the App Store's Top Free, Top Paid and Top Grossing charts around the world, and we follow its ratings, price and how it makes money. Our models turn those signals into monthly download and revenue estimates for every iOS app.
Each estimate is one rounded figure with a confidence level. Where the evidence only supports an upper limit, the page says so with a sign, for example <$5K, instead of inventing a precise number. Revenue means what users spend in the App Store, before Apple's cut.
Start with the app revenue estimator, or browse today's top grossing apps.
Questions
Is AppTrendKit cheaper than Sonar?
Sonar: Two plans with a 7-day trial, plus prepaid API credits. AppTrendKit: Free to start; Pro is $26.99 a month, or $19 a month billed yearly ($228 a year).
Does Sonar show download and revenue estimates for other apps?
Not listed on its pricing or home page. AppTrendKit shows them for every iOS app, one rounded figure with a confidence level: the 300 biggest apps free, every app with Pro.
Does AppTrendKit cover Google Play?
Not yet: AppTrendKit covers the iOS App Store only. If you need Google Play data today, Sonar covers it.
Can I try AppTrendKit for free?
Yes. The 300 biggest apps, the top charts, 10 keyword pages and the free tools need no account, and you can open 2 more app pages a day without one; a free account opens 5 a day and adds watchlists and alerts. No credit card is needed.
Which is better for an indie iOS developer, Sonar or AppTrendKit?
It depends on the job. Choose Sonar if keyword ranking is the job: daily rank tracking for thousands of keywords in every country. Choose AppTrendKit if you want to know what competing apps earn and download, not only where they rank.
Comparisons
Sources, checked 11 October 2026: Sonar pricing page.
Sonar is a trademark of its owner. AppTrendKit is not affiliated with or endorsed by Sonar. Details about Sonar come from its public website and the sources named on this page as of 11 October 2026; prices and features change, so check the vendor's website before you decide.
See what an iOS app earns, without the Sonar price.
Free to start. No sales call, no credit card.
Look up any app free