API Usage vs OpenASO
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
API Usage
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Understand your AI and cloud costs without jumping between provider dashboards. API Usage brings OpenAI, Anthropic, and Vercel billing data into one clear, customisable view. Connect multiple organisations, choose the metrics and time ranges that matter to you, and keep important totals visible on your Home Screen. BUILD YOUR DASHBOARD - Track daily spend across configurable time ranges - Break down costs by project, service, API key, workspace, or model - Choose list, bar, line, area, or donut chart styles - Create compact or detailed tiles for each organisation CHECK COSTS FROM YOUR HOME SCREEN - Turn any dashboard tile into a widget - Choose the organisation and metric for each widget - Use small, medium, or large widget layouts - Keep snapshots updated in the background when iOS allows MADE FOR MULTIPLE PROVIDERS - Connect more than one organisation per provider - View OpenAI, Anthropic, and Vercel independently - Add, edit, or remove organisations at any time YOUR CREDENTIALS STAY ON YOUR DEVICE Credentials are stored in the iOS Keychain. API Usage communicates directly with the provider you connect and does not send your credentials or billing data to a Barolo AI server. API Usage is an independent product and is not affiliated with, endorsed by, or sponsored by OpenAI, Anthropic, or Vercel.
OpenASO
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Understand how apps rank across the App Store ā and keep your research on your device. OpenASO is a local-first workspace for App Store Optimization research. Track keyword positions, review ranking history, compare storefronts, and organize your discovery work without creating an account. Built for independent developers and app makers, OpenASO helps you turn public App Store data into a focused research workflow. KEYWORD RANKINGS AT A GLANCE ⢠Track keyword positions by storefront and device ⢠Compare current and previous rankings ⢠Review best, worst, and historical positions ⢠Quickly see which keywords improved, declined, or stayed unchanged ⢠Follow ranking changes over time with clear charts and snapshots RESEARCH ACROSS STOREFRONTS ⢠Track the same keyword across multiple App Store countries ⢠Compare how an app appears in different markets ⢠Research iPhone and iPad search results ⢠Organize keywords for localization and regional discovery work ADD AND RESEARCH ANY PUBLIC APP ⢠Search by app name, App Store ID, URL, or bundle identifier ⢠Review public app information, ratings, and customer reviews ⢠Track your own apps or research competitors ⢠Keep multiple app workspaces organized in one place BUILT FOR PRACTICAL ASO WORK ⢠Add keywords individually or import them from CSV ⢠Export keyword data for further analysis ⢠Save notes alongside apps and keywords ⢠Refresh tracked research in the background ⢠Review historical snapshots whenever you need them LOCAL-FIRST BY DESIGN ⢠No account or sign-up required ⢠Your tracked apps, keywords, notes, and snapshots stay on your device ⢠Your research is stored in a local database ⢠Export your data whenever you need a backup or external workflow FOCUSED AND TRANSPARENT ⢠Built around publicly available App Store information ⢠No impression, download, or revenue estimates ⢠No invented popularity scores presented as official Apple data ⢠Designed as a research companion, not an App Store Connect replacement OpenASO is an independent research tool and is not affiliated with or endorsed by Apple. Research keywords. Follow the movement. Find your next opportunity.
Screenshots
Verdict
The clearest difference is iOS requirement: OpenASO at 16.4 against API Usage's 26.0. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | API Usage | OpenASO |
|---|---|---|
| Price | Free | Free |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone | iPhone |
| Requires iOS | 26.0 | 16.4 ā better |
| Further details ā not scored | ||
| Size | 5 MB | 49 MB |
| Age rating | 4+ | 4+ |
| Developer | Barolo AI | Que Anh Bui Nguyen |
In-app purchases
API Usage
No in-app purchases
OpenASO
No in-app purchases









