Waterfall vs Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Waterfall
This application displays the current time on your device screen, creating a unique visual effect by simulating a cascading waterfall of numbers. It offers a distinctive way to view the time with its innovative design.
- Waterfall number effect for time display
- Simulates cascading numbers
- Displays current device time
- Unique visual interface
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The program displays the current time on the device screen, simulating the effect of a waterfall of numbers.
Calculator
A straightforward calculator designed for Apple Watch, featuring a clear display and large buttons for easy operation. It handles basic, scientific, and tip calculations efficiently.
- Clear display
- Large buttons
- Basic calculations
- Scientific calculations
- Tip calculations
- Apple Watch optimized
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Now with a Unit Converter for length, weight, temperature and volume, controlled with the Digital Crown. A simple, clear calculator with large buttons that makes calculations easy on your Apple Watch. Whether it's a quick tip, everyday math, or scientific functions like sin, cos, and tan, this app has you covered—no phone needed. Ask Siri to calculate a sum or convert units without opening the app.
Screenshots
Verdict
The clearest difference is update cadence: Calculator at every 4 weeks against Waterfall's every 4 months. Waterfall's advantage is device support (5 vs 3) and iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and monetization model 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
Waterfall costs $0.99 and Calculator $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Waterfall ships an update every 4 months, Calculator every 4 weeks. The most recent releases landed on October 7, 2026 and October 20, 2026 respectively.
| Parameter | Waterfall | Calculator |
|---|---|---|
| Price | $0.99 | $0.99 |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | 2 — better | — |
| Update frequency | Every 4 months | Every 4 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod, Apple TV, Apple Watch — better | iPhone, iPod, Apple Watch |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 4 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Kostakov Maxim | Hemal Modi |
Customer experience
Waterfall
Calculator
In-app purchases
Waterfall
No in-app purchases
Calculator
No in-app purchases
