Quad Notes vs Voice Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Quad Notes
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Displays four notes in a grid.
Voice Calculator
Perform calculations using your voice and hear the results spoken aloud. Ideal for hands-free use, visually impaired individuals, and professionals. Supports multiple languages and offers a history feature.
- Calculate by voice
- Hear results spoken aloud
- Supports 11 languages
- Calculation history
- Business keypad features
- Accessibility options
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【Calculate by Voice, Hear the Results】 SoundCalc is a voice-powered calculator that speaks your answers. ■ Perfect for: ・Visually impaired users ・Hands-free calculation while cooking or driving ・Anyone who wants audio confirmation of results ・Accounting and bookkeeping professionals ■ Key Features ・Speech Recognition: Say "123 plus 456 equals" to calculate ・Speech Output: Results are read aloud automatically ・11 Languages: English, Japanese, Spanish, Chinese, Korean, French, German, Portuguese, Italian, Dutch, Russian ・Calculation History: Organize with multiple threads ・History Tap: Tap history to insert results ・21 Themes: Dark, Light, High Contrast and more ■ Business Features ・Business Keypad: Includes √ and GT keys ・Grand Total (GT): Automatically accumulates calculation results ・Equals Repeat: Tap "=" repeatedly to repeat the last operation ・Square Root: Say "square root of 9" for voice input ■ Accessibility ・VoiceOver compatible ・High contrast mode ・Haptic feedback ■ Pro Features ・Ad-free experience ・20+ premium themes ・Unlimited history ・Business keypad ・Input device selection (USB/Bluetooth microphone) Free to use. Upgrade to Pro for ad-free experience and extended features.
Screenshots
Verdict
The clearest difference is in-app purchases: Quad Notes at none against Voice Calculator's 1. Quad Notes also leads on device support (3 vs 1). Voice Calculator's advantage is update cadence (daily vs every 2 weeks). On price, ads and iOS requirement there is nothing between them.
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. Voice Calculator sells 1 one-off in-app purchase. Quad Notes asks for nothing beyond the download.
Quad Notes ships an update every 2 weeks, Voice Calculator daily. The most recent releases landed on October 10, 2026 and October 24, 2026 respectively.
| Parameter | Quad Notes | Voice Calculator |
|---|---|---|
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| Update frequency | Every 2 weeks | Daily — better |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.8.3 — better | 16.0 |
| Further details — not scored | ||
| Size | 37 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Hideaki Uchikoshi | RAINBOW TREE LLC |
In-app purchases
Quad Notes
No in-app purchases
Voice Calculator
- Pro (Lifetime)$2.99
Questions
Is Quad Notes free?
Is Voice Calculator free?
Do Quad Notes or Voice Calculator have ads?
Which is updated more often, Quad Notes or Voice Calculator?
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