# Cliff Timer: Height Measurer — And lightning distance timer

> Lightning strike height and distance calculator using time and physics. (iPhone/iPad app by Frank Schipani.)

- Source: https://appshunter.io/ios/app/cliff-timer-height-measurer/id6736556211 (this page in markdown: same URL + `.md`)
- Developer: [Frank Schipani](https://appshunter.io/developer/1772378774)
- Category: Utilities, Education
- Price: Free with in-app purchases
- Rating: 4.90/5 from 10 App Store ratings · 6 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.0 · 16 MB
- Languages: English
- Released: 2024-10-06
- Data updated: 2026-07-10
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/cliff-timer-height-measurer/id6736556211/reviews.md

## What is Cliff Timer?

Cliff Timer is a simple and powerful app that lets you measure real-world distances using just a stopwatch and basic physics. By timing how long it takes for an object to fall, you can estimate the height of cliffs and other drops, or measure how far away a storm is by counting the seconds between lightning and thunder. Designed to be easy to use while still based on real equations, Cliff Timer turns quick observations into meaningful measurements, making it perfect for outdoor exploration, learning, or satisfying your curiosity about the world around you.
This app uses the formula for height, h=12⋅g⋅t^2, and the formula for lightning, d=t/5. Start the stopwatch, and the app will give you the information.

## Key features

- Lightning height calculation
- Lightning distance calculation
- Uses physics formulas
- Simple stopwatch interface
- Real-time results

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Yearly | $5.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Lightning Distance Access | $1.99 | one-time |


## Recent user reviews (6 of 6)

All indexed reviews: https://appshunter.io/ios/app/cliff-timer-height-measurer/id6736556211/reviews.md

### 5/5 — Lighting Timer Rocks

*2025-08-09*

Despite the name of the app (Cliff timer, which gauges height by the time it takes a rock to land, which is itself awesome), I particularly like the Lightning timer functionality (estimating distance be the time between the lightning and the thunder), perhaps because I find myself in thunder storms more than I find myself in high places?

### 5/5 — Cool app 🔥

*2024-10-08*

Pretty professional looking, functions well, neat idea. Underrated app.

### 5/5 — Cool app/feature

*2024-10-06*

The app is really cool and thought out/organized. It is a fun way to measure height accurately. I look forward to trying out the app.

**Developer response:** Thank you for your review. I’m glad you enjoy the app.

### 5/5 — Great App

*2024-10-06*

This app is fantastic. For my whole life I’ve been using the 1-Mississippi 2-Mississippi method to measure height, but 280 feet sounds like a way better height than 4-Mississippis. And it can be very useful to know how far away a storm is. Great app!

**Developer response:** Thank you for your review. I’m glad you enjoy the app

### 5/5 — Review

*2024-10-06*

Amazing app for measuring the height of cliffs and distance lightning strikes!

**Developer response:** Thank you for your review. I’m glad you enjoy the app

### 5/5 — Amazing

*2024-10-06*

This app is really cool.

**Developer response:** Thank you for your review. I’m glad you enjoy the app.

## Frequently asked questions about Cliff Timer

### How does Cliff Timer calculate lightning height?

Cliff Timer uses the formula h = 1/2 * g * t^2, where 'g' is the acceleration due to gravity and 't' is the time in seconds between seeing lightning and hearing thunder. The app measures this time for you.

### What is the formula for lightning distance in Cliff Timer?

The app utilizes the formula d = t / 5, where 'd' is the distance in miles and 't' is the time in seconds between seeing lightning and hearing thunder. This provides a quick estimation of how far away the strike is.

### Does Cliff Timer work offline?

Yes, Cliff Timer functions as a standalone utility app. Once installed, it does not require an internet connection to perform its calculations, making it useful even in areas with no signal.

### What devices is Cliff Timer available on?

Cliff Timer is designed for Apple devices and is compatible with both iPhones and iPads, allowing users to leverage its features across their iOS ecosystem.

### How accurate is Cliff Timer's lightning distance calculation?

The distance calculation 'd = t / 5' is an approximation. The speed of sound can vary slightly with temperature and humidity, so this provides a general estimate rather than a precise measurement.

### What is the age rating for Cliff Timer?

Cliff Timer has an age rating of 4+. This indicates that the app is suitable for children aged 4 and above, with no mature content present.

### How often is Cliff Timer updated?

The latest version of Cliff Timer was released on November 8, 2025. While specific update frequency isn't detailed, the developer actively maintains the application.

### Does Cliff Timer have ads?

No, Cliff Timer is ad-free. Users can enjoy the utility without any advertisements interrupting their experience.

## Version history (last 5 releases)

### 2.2.5 — 2026-05-17

General bug fixes and performance improvements.

### 2.2.4 — 2026-05-03

New splash screen upon first app launch as well as minor bug fixes and performance improvements.

### 2.1 — 2025-11-08

Updated for iOS 26.

### 2.0 — 2025-07-14

We update our app regularly to make your experience better.

### 1.0 — 2024-10-06

No release notes.

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## More apps by Frank Schipani

- [Numbl](https://appshunter.io/ios/app/numbl/id6736633937)
- [OnCue: Push Notifications](https://appshunter.io/ios/app/oncue-push-notifications/id6748566091)
- [Notch - Simple Tally Counter](https://appshunter.io/ios/app/notch-simple-tally-counter/id6761332080)
- [LiDAR Lens: Laser Measure Tool](https://appshunter.io/ios/app/lidar-lens-laser-measure-tool/id6762218166)

All apps by Frank Schipani: https://appshunter.io/developer/1772378774

## Related topics

[cliff height timer](https://appshunter.io/ios/topics/cliff-height-timer)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-10.*