Formula Calculator # vs SonicClear
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Formula Calculator #
Perform calculations with a vast library of built-in formulas or create your own. Save and sync custom formulas to the cloud for easy access across devices. Includes a comprehensive scientific calculator.
- Extensive built-in calculation formulas
- Create and save custom formulas
- Cloud synchronization for custom formulas
- Share custom formulas with others
- Comprehensive scientific calculator
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The formula calculator comes with a wide range of built-in calculation formulas, allowing you to complete calculations simply by entering the required parameters. It also features built-in custom formulas, catering to individual needs. Once a custom formula is set up, you only need to input the parameters during your next calculation to quickly obtain the results, thereby improving efficiency. Moreover, you can share your custom formulas with friends or other devices for convenient calculations. After logging in with your account, you can synchronize your custom formulas to the cloud to prevent any loss. Additionally, it includes a comprehensive scientific calculator that meets various calculation needs.
SonicClear
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Got water stuck in your Apple Watch speaker? SonicClear uses a precision-tuned 165 Hz sine wave — the resonant frequency of the Apple Watch speaker grill — to physically push water out. Combined with continuous haptic pulses, it's the fastest way to restore crystal-clear sound. HOW IT WORKS • A 165 Hz tone plays at maximum volume, creating strong air displacement inside the speaker chamber • The frequency matches the speaker grill's resonant frequency for maximum vibration amplitude • Haptic pulses add physical vibration to dislodge water trapped in crevices FEATURES • One-tap water ejection — just press START PURGE • Real-time visual feedback with animated resonance rings • Elapsed time tracking to monitor your purge cycle • Built-in "How It Works" guide with step-by-step instructions • Optimized 165 Hz frequency for Apple Watch speakers • Combined acoustic + haptic water removal • Premium, minimal design — no ads, no subscriptions INSTRUCTIONS Hold your watch with the speaker facing down Tap START PURGE Wait 15–30 seconds Gently tap your watch on your palm to shake out remaining water Repeat if needed TIPS • Turn the Digital Crown up to maximize volume before starting • Run multiple purge cycles for stubborn water • Works best immediately after water exposure Designed exclusively for Apple Watch. No iPhone required.
Screenshots
Verdict
The clearest difference is price: Formula Calculator # at Free against SonicClear's $1.99. SonicClear's advantage is in-app purchases (none vs 4) and ads (none vs shown). On device support 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
Formula Calculator # is free to download; SonicClear costs $1.99 up front. Formula Calculator # sells 4 one-off in-app purchases. SonicClear asks for nothing beyond the download.
| Parameter | Formula Calculator # | SonicClear |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 5 weeks | — |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 67 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | 威 刘 | Emrah Korkmaz |
In-app purchases
Formula Calculator #
- 1 month subscription$1.49
- 3 months subscription$2.49
- 6 months subscription$3.49
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- 1 year subscription$4.49
SonicClear
No in-app purchases
Questions
Is Formula Calculator # free?
Is SonicClear free?
Do Formula Calculator # or SonicClear have ads?
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