API Usage vs Marshal Stack
Price, ratings, monetisation and update history for both apps, side by side โ 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.
Marshal Stack
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Marshal Stack is one screen for everything you have already shipped. Your apps in the App Store, the sites and APIs behind them, and the servers you run yourself โ all read by one rule: green is fine, amber needs a look, red is down. WHAT IT WATCHES โข App Store โ rating, review count, latest version, and the release state: in review, rejected, ready for sale. โข Sites and APIs โ checked every minute, with the latency next to the result. A notification arrives when an address stops answering twice in a row, and again when it recovers. โข Your own servers โ CPU, memory, disk, load and the heaviest processes, reported by a small agent you install with one line on a machine you already own. โข Alerts that say what to do, not only what broke โ memory over the threshold, a process running from /tmp, a port that was not open yesterday. YOUR KEYS, YOUR MACHINES Connect your own App Store Connect key, or none at all. The server agent dials out over HTTPS: it opens no port, reads no files, touches no databases, and uninstalls with one command. There is no registration form. Sign in with GitHub, or just open the app and look around on sample data bundled inside it โ no account, no keys, no network. ON THE WRIST The same three states on Apple Watch. A glance tells you whether anything needs you, and a tap opens the one thing that does. Free. No subscription, no in-app purchases, no ads, no third-party trackers.
Screenshots
Verdict
The clearest difference is device support: Marshal Stack at 3 against API Usage's 1. Marshal Stack also leads on iOS requirement (17.0 vs 26.0). On price, ads and in-app purchases there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | API Usage | Marshal Stack |
|---|---|---|
| Price | Free | Free |
| Update frequency | โ | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone | iPhone, iPad, Apple Watch โ better |
| Requires iOS | 26.0 | 17.0 โ better |
| Further details โ not scored | ||
| Size | 5 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Barolo AI | Alexandr Degteari |
In-app purchases
API Usage
No in-app purchases
Marshal Stack
No in-app purchases
Questions
Is API Usage free?
Is Marshal Stack free?
Do API Usage or Marshal Stack have ads?
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