Red Panic Button vs Z
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Red Panic Button
This app provides a one-touch solution for emergencies. Upon activation, it sends your location and a customizable alert message via SMS or email to pre-set contacts. It also offers features like voice recording and emergency number dialing.
- Send Panic SMS
- Send Panic Email
- Record voice message
- Customizable alert text
- Emergency Number feature
- Works with Apple Watch
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**Red Panic Button is now a universal app** When you are in trouble press the Red Panic Button! You just have to set a panic number or mail address and the phone will send a message which contains your address and location, determined using the fine GPS based or coarse GSM based coordinates. Features: - Send Panic SMS (works only on iPhone and iPad 3G) - Automatically send Panic email to designated email list - Retina display ready - Uses GPS/Network (where available on iPhone and iPad 3G) to determine your location or Wifi (on the iPod touch and iPad Wifi) - Emergency Number feature! You can now set the Emergency Number that is called at the press of the Red Panic Button. The number can be set from app settings. - Record voice feature! You can now send a recording to designated email list - Alert text customization Free features: -Send Panic SMS -Send Panic Email - Photo/video alert message - Audio alert message - One Secondary Alert - Works with Apple Watch - Works with BLE Alert Button Single User Subscription features: - No ADS - Unlimited panic contacts (We don't upload your contacts to server) - Unlimited Secondary Alerts Terms of use - https://www.redpanicbutton.com/legal/terms-of-use/ Privacy Policy - https://www.redpanicbutton.com/legal/privacy-policy/ Tips: - To reach more friends, multiple email addresses and phone numbers can be added - Stay tuned for more features ___ Red Panic Button requires internet connection in order to display the current address and send the email message. The Panic SMS feature does not work on iPod touch and iPad Wifi! Continued use of GPS running in the background can dramatically decrease battery life.
Z
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ZCalc is built from the ground up to handle everything from quick daily arithmetic to complex scientific formulas and financial planning. Designed with a sleek, native iOS interface and an integrated Control Center launcher, ZCalc delivers speed, precision, and power right at your fingertips. Key Features: Standard & Scientific Calculator: Full expression history, trigonometric functions, logarithms, powers, roots, factorials, and instant Rad/Deg toggles. Fractions & Mixed Numbers: Effortlessly add, subtract, multiply, and divide proper and improper fractions with automatic simplification. Unit & Currency Converter: Real-time unit conversions across length, weight, temperature, and live foreign exchange rates. Loan & Mortgage Calculator: Plan ahead with quick loan repayment estimates, interest calculations, and payment breakdowns. Date Difference Calculator: Instantly compute exact days, weeks between dates, or calculate time for specific deadline. Programmer Calculator: Native support for Hexadecimal, Decimal, Octal, and Binary bases, complete with a 64-bit sequence toggle bar and bitwise operations (AND, OR, XOR, NOT, Shift). Linear graph and polynomials quadratic solution are also options to play with. Seamless iOS 18 Integration: Launch ZCalc instantly using custom Control Center controls, dark mode icons, and custom home screen themes.
Screenshots
Verdict
The clearest difference is ads: Z at none against Red Panic Button's shown. Z also leads on update cadence (every 2 weeks vs every 5 weeks). Red Panic Button's advantage is device support (4 vs 2) and iOS requirement (13.0 vs 18.0). On price and in-app purchases 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. Red Panic Button sells 1 in-app purchase, starting at $0.99 per month and Z sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Red Panic Button ships an update every 5 weeks, Z every 2 weeks. The most recent releases landed on October 14, 2026 and September 29, 2026 respectively.
| Parameter | Red Panic Button | Z |
|---|---|---|
| Price | Free | Free |
| Rating | 2.5 (17 ratings) — better | — |
| Positive reviews | 29.2% of reviews | — |
| Number of ratings | 17 — better | — |
| Update frequency | Every 5 weeks | Every 2 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 63 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | ULTIMATE COMMUNICATION SOFTWARE LTD | Zoltan Homorodi |
In-app purchases
Red Panic Button
- Single User Full Version$0.991 Month
Z
- Fraction Unlock$0.99
- Units Unlock$0.99
- Graph Unlock$0.99
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- Quadratic Solver Unlock$0.99
Questions
Is Red Panic Button free?
Is Z free?
Do Red Panic Button or Z have ads?
Which is updated more often, Red Panic Button or Z?
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