Starling Calculator vs Parallel
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Starling Calculator
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Starling — Speak or Tap. Your Choice. A smarter way to calculate. Starling is a voice-powered calculator that understands natural language in English and Chinese — while still giving you the familiar keypad when you need it. Speak your calculations Just say it naturally: • “twenty times three plus fifteen equals” • “一百二十三除以三再加五等于” • “add ten more equals” No rigid format. Starling understands you. Or just tap Prefer a traditional calculator? Starling also includes a clean, responsive keypad — so you can switch between voice and touch anytime. Fast & accurate Get instant results with high accuracy using on-device speech recognition. Bilingual support Seamlessly supports both English and Chinese. Personalize your style Choose from multiple themes to match your taste — from minimal to vibrant. Designed for real life Perfect when: • your hands are busy • typing feels slow • you want a faster, more natural way to calculate Make calculations as easy as speaking — or tapping. Try Starling today. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://starling-app.github.io/Starling/privacy.html
Parallel
Perform multiple calculations simultaneously with a drag-and-drop interface. Features a scientific calculator, currency and crypto converter, and history saving with optional privacy locks. Customize with themes and fonts.
- Run 2, 3, or 4 calculations side-by-side
- Drag and drop calculation arrangement
- Scientific calculator mode
- Currency and crypto converter
- Save calculation history with notes
- Face ID/passcode lock for privacy
- Home screen widget and Quick Menu access
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Parallel. Calculate more. DO MORE AT ONCE Why calculate one thing at a time? Run 2, 3, or 4 calculations side by side, and arrange them however you like with drag and drop. No more memorizing one result just to punch it into the next — it's all already on screen. That's the whole idea behind the name. ONLY WHAT YOU NEED No bloat, no clutter. Scientific mode covers exactly what you'd expect from a real scientific calculator — nothing more, nothing less. The converter covers 57 world currencies plus Bitcoin, Ethereum, and a handful of other crypto. Simple, on purpose. YOUR HISTORY, YOUR CALL Parallel only saves what you choose to keep — each calculation with your own note attached, kept separate for standard and scientific mode. Share any result straight from history, wherever you need it. Prefer to keep it private? Lock it all behind Face ID or your passcode. MADE TO FEEL RIGHT Swipe between calculator, scientific mode, and converter. Feel every tap with haptic feedback. Add a widget to your Home Screen, or pull it up instantly from Quick Menu. MAKE IT YOURS Free with the Classic theme. Unlock 10 named themes, a set of distinctive fonts, and the 4-screen layout with Parallel Pro — a one-time purchase, no subscription, ever. Your calculator has never looked this good. No ads. No data collected. Available in 34 languages.
Screenshots
Verdict
Starling Calculator and Parallel are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Starling Calculator sells 3 in-app purchases, starting at $4.99 per year and Parallel sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
| Parameter | Starling Calculator | Parallel |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (4 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 4 — better |
| Update frequency | — | Every 6 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free |
| Devices | iPhone | iPhone, Apple Watch — better |
| Requires iOS | 18.0 | 18.0 |
| Further details — not scored | ||
| Size | 16 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | 文之 虞 | Evgenii Chizhov |
In-app purchases
Starling Calculator
- Starling Pro$4.991 Year
- Starling Pro$2.99
- Starling Pro$6.99
Parallel
- Parallel Pro$2.99









