TextMath vs CalcKing Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TextMath
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TextMath redefines how calculators work. No need to memorize complex button sequences - just input in natural language and get instant results. 【Core Features】 • Multi-tab management for organized calculations • Natural language input - type "15% of 200" or "100 USD to EUR" • Real-time calculation display with paper-style interface • Smart toolbar with mathematical and currency symbols • Supports basic math, percentages, currency & unit conversion • Automatic data saving and offline operation • Dark mode support 【Perfect For】 • Daily shopping calculations • Travel currency exchange • Work reports and data analysis • Students learning mathematics 【Technical Excellence】 • Precise calculation engine • Optimized performance • Local data storage for privacy • Regular updates Through natural language input and paper-style interface design, TextMath brings calculation back to its essence, becoming an extension of your thinking process. Download TextMath now and experience a different way of calculating.
CalcKing Pro
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Professional engineering calculator, the mobile computing tool for engineers! No ad interference: Specifically designed for engineers, with a pure usage experience and no pop-up ads. Full coverage of core functions: Basic scientific calculations: Trigonometric functions, logarithms and exponents, power operations, constant calls (π/e, etc.), support for degree/radian conversion, meeting general calculation needs. 12 types of unit conversions: Length, weight, area, volume, temperature, speed, etc., covering meters/cm/inches, kilograms/pounds, etc. Common sub-units, one-click quick conversion. Base conversion: Supports binary, octal, decimal, and hexadecimal conversions, suitable for electronic/computer engineering scenarios. Specialized engineering calculations: Built-in mechanics, circuits, materials, etc. Modules, solving professional problems such as force on inclined planes, series resistors, etc. User-friendly design: Portrait operation: Compatible with iPhone, using the vertical screen in engineering scenarios is more convenient. Local saved calculation history: Automatically records the last 20 calculations, not lost when uninstalling, and can be recalled at any time. Precise adaptation: Optimized for on-site work by engineers, clear display of large numbers, real-time input verification to avoid errors. Efficient work, time and effort-saving: From basic formulas to complex engineering problems, all are covered, helping you focus on core work!
Screenshots
Verdict
TextMath and CalcKing Pro are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases 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. TextMath sells 1 one-off in-app purchase and CalcKing Pro sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
TextMath ships an update every 5 days, CalcKing Pro weekly. The most recent releases landed on September 9, 2026 and September 20, 2026 respectively.
| Parameter | TextMath | CalcKing Pro |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 days — better | Weekly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.1 | 15.0 — better |
| Further details — not scored | ||
| Size | 41 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | MHOST LTD | 文娟 唐 |
In-app purchases
TextMath
- Unlimited Pages$1.99
CalcKing Pro
- 解锁功能$3.99









