About HarmonyAstroApps
We're an independent iOS developer making focused utility apps that respect your time, your privacy, and your attention.
HarmonyAstroApps builds small, useful iOS apps for iPhone and iPad. We're not a startup, not VC-backed, and not trying to become a platform. We just like making tools we'd want to use ourselves, shipping them, and moving on.
Our flagship app is Voice Calculator — a hands-free calculator that lets you speak your math instead of typing it. It's designed for cooking, shopping, quick estimates, accessibility, and any situation where your hands are busy but your voice is free.
What we believe
Focused, not bloated
Each app does one thing well. No dashboards, no upsells, no features you didn't ask for.
Privacy by default
Your data stays on your device. We don't track you, profile you, or sell ads against you.
Calm by design
No dark patterns, no nag screens, no manufactured urgency. The app waits for you.
Honest pricing
Apps are reasonably priced and transparent. No subscription traps for single-purpose tools.
How we build
Voice Calculator, like all our apps, is built natively in Swift for iOS using Apple's SwiftUI framework. Speech recognition is powered by Apple's on-device Speech framework, which means audio stays on your device whenever possible. We use standard Apple APIs, not third-party trackers or SDKs that phone home.
We test every release on real devices, across iPhone and iPad, in light and dark mode, with VoiceOver enabled, and with Dynamic Type turned up. We care about accessibility because voice-first apps are, by nature, an accessibility tool — and we want them to work for everyone.
Our apps
- Voice Calculator — Hands-free math for iOS. Speak calculations, add tax by voice, export to CSV, full audit trail.
Who we are
HarmonyAstroApps is a small independent developer based in India, shipping apps to a global audience on the App Store. We built Voice Calculator because no existing calculator handled continuous voice input well enough for real-world use — so we made one.
We read every email. If you've got feedback, a bug, a feature idea, or just want to say hello, please do.
Get in touch