CalcKing Pro vs SnookerTally
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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!
SnookerTally
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The App provided for snooker players simulates real-time scoring in formal competitions and simulates the referee's voice announcement of scores. It supports scoring in both two-player and three-player modes. If an operation error occurs, it can be recalled. All score and penalty records can be viewed, as well as historical data of players can be statistically analyzed.
Screenshots
Verdict
The clearest difference is update cadence: SnookerTally at every 3 days against CalcKing Pro's weekly. On price, ads, 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. CalcKing Pro sells 1 one-off in-app purchase and SnookerTally sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
CalcKing Pro ships an update weekly, SnookerTally every 3 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.
| Parameter | CalcKing Pro | SnookerTally |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 2 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | 文娟 唐 | 运梅 张 |
In-app purchases
CalcKing Pro
- 解锁功能$3.99
SnookerTally
- Permanent Membership$1.99









