--- title: TollCat canonical: https://tollcat.app/en/ language: en describedby: https://tollcat.app/llms.txt --- # TollCat A billing app for the cloud and AI services you pay for. It adds up what they cost into one total. Credentials stay on this device. ## What it is A billing app for the cloud and AI services you pay for. It adds up what your backends have spent this month into one total, with the per-vendor breakdown underneath. That total can also sit on the Lock Screen, in a Home Screen widget, or in the Mac menu bar. - Credentials stay in on-device Keychain. Not iCloud. Not any TollCat server. - Read-only: it does not shut down instances, change quotas, or send remote push. - No accounts. The optional server handles tip notes, feedback, a public catalog, and a reading inbox — none of those paths see a provider key. - Free; optional in-app tips; no membership. MIT licensed. iPhone, iPad, and Mac. iOS 26 or macOS 26. The ledger is USD. It is not a FinOps suite, not a cost-anomaly pager, and not a cloud console. Screenshots on this page are demo numbers from simulators, not live data. ## Connect each service. Follow the steps. The walkthrough takes you to a read-only credential, and each step names the exact permission you are granting. Nothing is saved until a real amount comes back. ## The SaaS you already use. Most of it connects. If a vendor has no billing API, you can post a reading from your own machine. The in-app list is the source of truth. [Support list](https://tollcat.app/en/providers/) Active24, AI/ML API, Aiven, Akamai, Alchemy, Alibaba Cloud, Anthropic, Api2Pdf, Apify, Armada Delivery, MongoDB Atlas, AWS, Azion, Azure, Baseten, Better Stack, BinaryLane, BitLaunch, Botpress, Bring, bunny.net, Checkout.com, Clerk, Clever Cloud, Click2Mail, ClickHouse Cloud, ClickSend, Cloudflare, CloudSigma, CM.com, CockroachDB Cloud, Con Edison, Confluent Cloud, ConoHa, CUDO Compute, Cursor, Datadog, DataPacket, Deel, Deepgram, DeepInfra, DeepSeek, DigiCert, DigitalOcean, DNSimple, Domeneshop, Dynatrace, EasyPost, Easyship, Elastic Cloud, Elastx, ElevenLabs, Exa, Expo EAS, fal.ai, Fastly, Figma, Firecrawl, Fireworks, Flexport, Flutterwave, Fly.io, FriendliAI, Gandi, Gcore, Google Cloud, Gelato, GitHub, GitLab, GleSYS, Gooten, Grafana Cloud, gridscale, Hedra, Heroku, HetrixTools, Hivelocity, Hostens, HostUp, Huawei Cloud, Hugging Face, Hyperstack, i3D.net, IBM Cloud, IDCF Cloud, inference.sh, Infobip, InterNetX, IONOS Cloud, Latitude.sh, Leaseweb, Linear, Linode, Magalu Cloud, MariaDB Cloud, Melbicom, Memset, MessageBird, MikroCloud, Mistral, mittwald, Mixpeek, Mollie, Moonshot (China), Moonshot (Overseas), MySendingBox, Namecheap, Name.com, NAVER Cloud, Nomos, DNScale, Neo4j Aura, Neon, Northflank, Notion, Novita, Ocamba, Octopus Energy, 1NCE, OpenAI, Openprovider, OpenRouter, Orange Cloud Avenue, 3DS OUTSCALE, OVHcloud, Oyster, Parasail, PayPal, Paystack, PDFShift, PG&E, Phaxio, phoenixNAP, Pika, PlanetScale, Plivo, Polar, Porkbun, PostHog, Postman, Printful, Printify, Prodigi, Pulumi Cloud, Qdrant Cloud, Qiniu, Qovery, Quay.io, Rackspace, Railway, Realtime Register, Redis Cloud, Remote, Render, Resend, RevenueCat, RunPod, Sakura Cloud, Scaleway, Scalingo, Seeweb, Sentry, Servers.com, Seven Bridges, ShipBob, Shippo, ShipStation, Shipwell, SiliconFlow, Simply.com, Slack, SMSC.ru, Soniox, Soracom, STACKIT, Stannp, Starlink, StepFun (China), StepFun (Overseas), Stripe, Supabase, SurrealDB Cloud, Tavily, teelaunch, Telnyx, Textmagic, thanks.io, Tibber, TiDB Cloud, TierPoint Metallic, Time4VPS, Together AI, TransIP, Transloadit, Turso, Twilio, Typebot, Typesense Cloud, Unleash, UpCloud, Upstash, Upsun, UtilityAPI, Vast.ai, Vercel, Voltage Park, VoltView, Vonage, VPS.NET, Vultr, WarpStream, Websupport, xAI, Z.com Cloud, Zilliz Cloud, Zoom, Formspring, Hostcircle, Loginet, IDCloudHost, iwinv, Frank Energie, Dilmune, Hubble, Files.com, DoiT, Timeweb Cloud, Cloudheed, Sevalla, CatalystVM, Oxahost, Fiskil, 3PLGuys, Pleo, Cerebrium, Shipmondo, Sendcloud, Volcengine, Kingsoft Cloud, Tencent Cloud, Make ## The keys stay on this phone. Nowhere else* Credentials are written only to this iPhone. Not iCloud. Not any TollCat server. [What that actually means](https://tollcat.app/en/privacy/) ### Open source, and how to check The source is on GitHub, MIT licensed. You can build it and run it on your own phone. The App Store binary is re-signed and encrypted by Apple, so it will not match this source byte for byte. What you can check is the public build’s provenance, and the executable’s UUID. The steps are in the repo. ### The phone’s own keychain Keychain is the encrypted keystore that ships with the iPhone. The system holds the keys; this app does not write them into its own files. We use the strictest class: readable only after you unlock this device, not copied to iCloud, not included in backups. Delete a service and that key is deleted with it. ### Where a refresh goes A refresh leaves this phone for each vendor’s official API. No TollCat server sits in the middle, and none of them see a key. The domains this app talks to are listed under Settings → About. The same list lives in the source; the build fails if a host goes missing. ### A new phone Keys stay out of iCloud on purpose, so a new phone is an export you start. Save an encrypted .tollcat on the old phone, then type the 10-character code on the new one. Leave the import page and the code is gone. The file cannot be imported after 24 hours — that only shrinks the window if you sent it by mistake, and is not the strength of the encryption. History does not travel with the file; refresh once after import. ### What the server never sees There is one server. It handles tip notes, feedback, a public catalog, a reading inbox, and anonymous page counts. None of those paths see a credential or a bill. Having a server does not mean it can fetch your bill. ## More platforms ### iPad The same app as iPhone. You don’t install a second one. #### More room, more to see #### Turn it upright, still good ### Mac A native Mac app. A billing cat shows up in your menu bar. #### Menu bar #### A native app, at home on the Mac A real Mac app written in SwiftUI, not a web page wrapped in Electron. It opens right away, and it sits in the background without eating your memory. Credentials stay in this Mac’s keychain. They are not shared with iPhone or iPad. ### Android It’s built. It’s just not on Google Play yet. #### Same math, made for Android It does the math with the same code as the iPhone app, so the totals match to the cent. The screens were rebuilt the Android way, and credentials stay on the phone here too. If you can’t wait for the store, build it yourself from the source on GitHub. [GitHub](https://github.com/KUD-00/tollcat) ### Windows Not done yet — stay tuned! #### Still in the shop The repo has an early Windows build. [GitHub](https://github.com/KUD-00/tollcat) ## FAQ ### Do API keys leave this device? No. They are written only to on-device Keychain with WhenUnlockedThisDeviceOnly: not iCloud, not system backups. Fetch requests go from this device to each vendor’s official API. No server ever handles a provider credential. ### Missing a service you use? The full roster is on the support list. If a vendor has no billing API, you can post a reading from your own machine to the reading inbox. To request a service, use the contact page. https://tollcat.app/en/providers/ ### What about a new phone? Credentials deliberately stay out of iCloud, so moving is an export: save an encrypted .tollcat file on the old phone, then type the 10-character code shown on screen into the new one. The code dies when you leave the import page, and the file expires after 24 hours. History does not travel with the file — refresh once after import. ### Does it cost money? Completely free. ### Is this FinOps? Will it change my cloud resources? No. TollCat reports spend. It does not shut down instances, change quotas, send remote push, or compute the bill with a cloud model. A local reminder is optional and never includes an amount. ### Which devices? What about currency? iPhone, iPad, and Mac, on iOS 26 or macOS 26. The Android app is built too and runs on Android 9 or later; it’s just not on Google Play yet. The ledger is kept in US dollars. Display currency only changes how amounts are written; it does not call a live FX API. ### Where is the source? It’s all on GitHub, MIT licensed. Build it yourself, or check that the App Store binary really comes from this source — the steps are in the repo. https://github.com/KUD-00/tollcat ### What about Android? It’s built — just not on Google Play yet. Too impatient to wait? Build it yourself from the source on GitHub, and feel free to lend a paw while you’re there. https://github.com/KUD-00/tollcat Your cloud bills, in your pocket.