JackDMS vs Geek Math
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
JackDMS
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JackDms是杰克缝纫机信息中心自主研发的用于经销商的进销存系统。
Geek Math
This calculator app features an intuitive column layout for multiple equations, allowing real-time modification of numbers and operators. It offers interactive linking of numbers and a unique lock feature to protect important values.
- Intuitive column layout
- Real-time equation modification
- Linked numbers for interactive calculation
- Lock feature for number protection
- Multi-line display
- Theme selection
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* Intuitive column layout displaying multiple equations on the same screen * Ability to modify operands and operators at any time * Linked numbers that calculate interactively in real-time The calculator's display and operation have been redesigned from the ground up. Calculator Features: - Multi-line Display: Equations are clearly displayed line by line, with the length of numbers and operators automatically adjusted to fit the screen width. - Equation Modification: Freely select and change numbers within equations. Operators can also be modified to alter the results. - Linking and Interaction: Numbers in links update interactively. A single number can be linked to multiple numbers. - Theme Selection: Choose from white, black, brown, and more than three different theme colors. - Delete Functions: "AC" for full clear, erasing the entire calculator screen. "R" for line clear, removing one line from the list. "C" for clear, resetting a number to zero. "BS" for backspace, deleting the previous input. - Lock Feature: Replaces traditional memory functions with a more intuitive lock feature. Protect numbers you don't want to delete with a single button lock. - Save Previous Equations: Even if you restart your device, leave the application unopened for an extended period, or switch between applications, previous equations will be saved. Give the Geek Calculator a try! Perhaps this is the perfect calculator application for you.
Screenshots
Verdict
The clearest difference is in-app purchases: JackDMS at none against Geek Math's 1. JackDMS also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 10 months). On price, 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. Geek Math sells 1 one-off in-app purchase. JackDMS asks for nothing beyond the download.
JackDMS ships an update every 3 weeks, Geek Math every 10 months. The most recent releases landed on August 10, 2026 and September 9, 2026 respectively.
| Parameter | JackDMS | Geek Math |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 weeks — better | Every 10 months |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 71 MB | 29 MB |
| Age rating | 17+ | 4+ |
| Developer | 帅 倪 | QQ TSUBASA |
In-app purchases
JackDMS
No in-app purchases
Geek Math
- Premium No ad & more math rows$1.99









