Numerical³ vs Promise
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Numerical³
A powerful and beautifully designed calculator app that offers advanced scientific functions, automatic bracket handling, and a unique no-equals button interface. It integrates seamlessly with iOS features like widgets and keyboards for calculations anywhere.
- No equals button interface
- Automatic bracket handling
- Full scientific keypad
- Today Widget integration
- Numerical² Keyboard for any app
- Equation editing
- Customizable themes
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Numerical³ is still the calculator without equal. The first Numerical shipped in 2014—v3 brings long-requested improvements and the same focus on delightful, minimalist utility apps.MAC TOONumerical runs natively on macOS: multiple windows, tabs, resizing, desktop widgets, full keyboard support, and synced history. Download it on the Mac App Store.WIDGETSLock screen and Home Screen widgets—modernized on iPhone and iPad.THEMESBrand-new neo-morphic themes alongside our most popular picks—each with light and dark variants that follow your iOS appearance settings. Use the Theme Picker to preview them all.ICONSTheme Home Screen icons match iOS 26 with glass effects, Dark Mode, and tints.HISTORYYour equations stay visible on screen—above the keyboard on iPhone (portrait) and to the side on iPad and Mac. iCloud keeps history in sync across iPhone, iPad, and Mac.KEYBOARDSExternal keyboards are fully supported on iPhone, iPad, and macOS—including the shortcuts you expect.SOUND FXSounds and clicky feedback on iPhone, iPad, and Mac. Haptics on iPhone.14+ LANGUAGESThe entire app is localized in 14+ languages—including Japanese, Chinese, Korean, and Russian—with international digits and formats. Missing yours? Let us know.Mana Machines—Numerical³ and upcoming apps from a studio focused on delightful, minimal, human-centered utilities. More on the way.Questions or feedback: manamachineventures@gmail.comDeveloped by Andrew J Clark. Designed by Andrew J Clark & Alex Vanderzon. Terms of Use: https://www.manamachineventures.com/terms
Promise
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Promise Alarm helps you wake up with a reminder that matters. Instead of waking up to a generic alarm tone, record your own voice with the promises and goals you made to yourself. Whether it's a commitment to wake up early, study, exercise, or build better habits, your own words become your motivation every morning. Features: • Record your own motivational alarm messages • Create and manage alarms easily • Repeat alarms on selected days • Customize snooze duration • Simple, clean, distraction-free design • Reliable alarm experience Your voice is more powerful than any ringtone. Wake up with purpose. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://promise.eslamelsadawy.com/
Screenshots
Verdict
The clearest difference is in-app purchases: Numerical³ at none against Promise's 2. Numerical³ also leads on device support (3 vs 1) and iOS requirement (18.0 vs 26.0). On price, update cadence and ads 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. Promise sells 2 in-app purchases, starting at $2.99 per month. Numerical³ asks for nothing beyond the download.
Numerical³ ships an update every 2 weeks, Promise every 3 weeks. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.
| Parameter | Numerical³ | Promise |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (1.3K ratings) — better | — |
| Positive reviews | 74.9% of reviews | — |
| Number of ratings | 1.3K — better | — |
| Update frequency | Every 2 weeks — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad, Mac — better | iPhone |
| Requires iOS | 18.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 175 MB | 54 MB |
| Age rating | 4+ | 4+ |
| Developer | Andrew J Clark | Eslam Elsadawy |
Bugs and requests
Numerical³
Reported bugs
3 issues- Unresponsive keys
- Calculation errors
- Crashes on startup
Requested features
5 requests- Add scientific functions (square root, trigonometry, etc.)
- Implement an equals button
- Add more theme options
- Develop an iPad version
- Bring back widget support
Promise
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Numerical³
No in-app purchases
Promise
- Promise Alarm Pro Monthly$2.991 Month
- Promise Alarm Pro Yearly$9.991 Year









