Instant Cal vs TapMaster
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
TapMaster
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TapMaster repeats actions on web pages opened inside this app, and includes utilities that work without an account. Web automation · Auto tap: place several points on a page and repeat them at an interval. · Auto scroll: move up or down, including back and forth. · Auto refresh: reload the current page on a timer. · Workflow: combine taps, scrolls, reloads, waits, typing, and conditions, then save the task. · Gesture recording: record what you do on the page and play it back in the same order. · Scheduled tasks: send a notification on this device at the chosen time. The linked task runs after you open the app. · Templates: start from a ready-made flow, or save your own. Limits Automation works only on web pages inside this app. It stops when you switch apps, leave for the Home Screen, or lock the device. TapMaster cannot tap other apps in the background, and it cannot operate a web page while the app is closed. Utilities The set includes a countdown, stopwatch, Pomodoro timer, breathing guide, lunar calendar, full-screen clock, habits, compass, level, sound meter, flashlight, ruler, unit converter, Chinese amount in words, Morse code, base converter, hashes, Simplified and Traditional Chinese, timestamps, QR codes, text recognition, image slicing, a ledger, waste sorting, a mortgage estimate, checklists, and a password generator. Permissions · Notifications: alert you when a scheduled task is due. · Location: the compass reads heading. · Microphone: the sound meter measures nearby sound. The number is a guide, not a lab reading. · Camera: turns on the flashlight. · Photos: saves images you create into your photo library. Data Tasks, templates, bookmarks, activity logs, and utility records stay on this device. There is no account. The app does not upload this content to the developer’s server. [Subscription Info] · Subscription titles: PRO Monthly / PRO Yearly · Price & period: PRO Monthly ¥18.00/month; PRO Yearly ¥98.00/year · One-time lifetime purchase also available: PRO Lifetime ¥198.00, no auto-renewal · Auto-renewal: charged to your Apple ID account upon purchase confirmation; automatically renews and charges within 24 hours before the current period ends · How to cancel: cancel anytime in Settings → Apple ID → Subscriptions; benefits end at the end of the current period · Free tier: 3 scheduled tasks, up to 20 steps per task, up to 5 clicks/refreshes · Terms of Use: https://password.jimdream.com/tap/tap-user-agreement.html · Privacy Policy: https://password.jimdream.com/tap/tap-privacy-policy.html
Screenshots
Verdict
The clearest difference is in-app purchases: Instant Cal at none against TapMaster's 3. TapMaster's advantage is ads (none vs shown). On price, update cadence, 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
Both are free to download. TapMaster sells 3 in-app purchases, starting at $2.99 per month. Instant Cal asks for nothing beyond the download.
Instant Cal ships an update every 2 weeks, TapMaster every 8 days. The most recent releases landed on November 10, 2026 and November 2, 2026 respectively.
| Parameter | Instant Cal | TapMaster |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks | Every 8 days — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 31 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Taek Oh | 兴业 朱 |
In-app purchases
Instant Cal
No in-app purchases
TapMaster
- PRO Monthly$2.991 Month
- PRO Yearly$14.991 Year
- PRO Lifetime$29.99









