SeeBox vs Instant Cal
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SeeBox
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This is a smart camera mobile App. After connecting to the smart camera via a mobile App, you can watch clear and smooth real-time video at any time. It supports two-way voice, remote PTZ control, video playback, motion detection and alarm push functions. It is suitable for home, Shops, companies, care for the elderly, babies, pets, supervise nanny, employees, smart anti-theft, etc. You can also share your camera with family or friends.
Instant Cal
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See results the moment you type. Instant Calc is an all-in-one calculator that shows results as you enter numbers — no Calculate button needed. Just type and see. 15 Specialized Calculators Finance & Daily Life • Discount Calculator — Instantly calculate sale prices and savings • Loan Calculator — Monthly payment, total interest, full amortization • Savings Calculator — Final balance and after-tax interest • Currency Converter — Real-time rates for 14 currencies Dining & Splitting • Tip Calculator — Split bills with custom tip percentages • Dutch Pay — Divide any bill evenly among any number of people Health • BMI Calculator — Body mass index with health grade (ft/lb or cm/kg) • Age Calculator — Exact age in years, months, days + birthday countdown Unit Conversion • Length, Weight & Temperature converter (imperial ↔ metric) • Fuel Efficiency — MPG and km/L • Unit Price Comparison — Find the better deal instantly • Date Calculator — Days between dates, D-day countdown • Math & Engineering — Expression evaluator, trig, fraction→decimal Key Features 4 Languages — Korean · English · Japanese · Chinese Dark Mode / Light Mode toggle Favorites — Pin your most-used calculators to the top History — Review any past calculation anytime Large Text Mode — Bigger display for comfortable reading Live Exchange Rates — Auto-updated via KEB Hana Bank No sign-up. No clutter. Open the app and start calculating.
Screenshots
Verdict
The clearest difference is ads: SeeBox at none against Instant Cal's shown. SeeBox also leads on iOS requirement (11.0 vs 15.0). Instant Cal's advantage is update cadence (every 2 weeks vs monthly). On price, in-app purchases and device support 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. Neither carries in-app purchases, so what you see is what you pay.
SeeBox ships an update monthly, Instant Cal every 2 weeks. The most recent releases landed on October 12, 2026 and October 20, 2026 respectively.
| Parameter | SeeBox | Instant Cal |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 112 MB | 31 MB |
| Age rating | 12+ | 4+ |
| Developer | Shenzhen Jikeyuan Electronic Technology Co., LTD | Taek Oh |
In-app purchases
SeeBox
No in-app purchases
Instant Cal
No in-app purchases









