# Thunder & Lightning vs BluePD

The clearest difference is in-app purchases: Thunder & Lightning at none against BluePD's 1. Thunder & Lightning also leads on iOS requirement (8.0 vs 16.0). BluePD's advantage is update cadence (every 5 weeks vs every 128 months) and review sentiment (100% vs 87%). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. BluePD sells 1 one-off in-app purchase. Thunder & Lightning asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for Thunder & Lightning against 5.0 for BluePD. Both are backed by a comparable volume of ratings — 7 and 4 respectively. Written reviews are what separate them: 87% of Thunder & Lightning's written reviews are positive against 100% of BluePD's.

Thunder & Lightning ships an update every 128 months, BluePD every 5 weeks. The most recent releases landed on October 13, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Thunder & Lightning | BluePD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (7 ratings)](https://appshunter.io/ios/app/thunder-and-lightning/id287959052/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/bluepd/id6761055174/reviews)** |
| Number of ratings | **7** | 4 |
| Positive reviews | 87.3% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 128 months | **Every 5 weeks** |
| Monetization | Free | Free |
| Size | 2 MB | 3 MB |
| Requires iOS | **8.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Bryan Figler](https://appshunter.io/developer/287217534) | [TYLER RICHARD CLAMPITT](https://appshunter.io/developer/1887538301) |

## What reviewers say

### Thunder & Lightning

[App page](https://appshunter.io/ios/app/thunder-and-lightning/id287959052)

Measure the distance to loud events like thunder, fireworks, or rocket launches by timing the visual and auditory cues. Adjust for temperature for greater accuracy and choose your preferred units. It also functions as a stopwatch, speed-of-sound calculator, and unit converter.

**Highlights:** Distance measurement to sound events, Temperature adjustment for accuracy, U.S./Imperial and metric units, Stopwatch functionality, Speed-of-sound calculator, Fahrenheit/Celsius converter

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Simple and easy to use
- 💰 Free with no ads
- 🎯 Does exactly what it says
- 💡 Useful for weather watchers
- 👨‍👩‍👧‍👦 Fun for kids and families

**What reviewers complain about**

- ⏳ App was down for some time
- 👴 Dated interface/functionality
- 🤷‍♂️ Trivial or pointless to some users

**Reported bugs**

- App crash
- App does not work anymore

**Requested features**

- Option to have both miles per hour and centigrade
- Switch to a single button for lightning and thunder
- Allow typing temperature instead of slider
- Display average time and distance of records
- Use light sensor and camera for lightning detection


### BluePD

[App page](https://appshunter.io/ios/app/bluepd/id6761055174)

A quick legal reference tool for law enforcement officers, providing instant access to case law, statutes, and Miranda warnings. Designed for speed and clarity in the field.

**Highlights:** Quick legal reference, Miranda warnings (English/Spanish), Official state statutes access, SFST workflow support, Clean and fast design

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BluePD Pro | $4.99 | one-time |


## Frequently asked questions

### Is Thunder & Lightning free?

Thunder & Lightning is free to download, with no in-app purchases.

### Is BluePD free?

BluePD is free to download, with in-app purchases available.

### Which has better reviews, Thunder & Lightning or BluePD?

BluePD is rated higher. Thunder & Lightning averages 4.9 out of 5 from 7 ratings, while BluePD averages 5.0 from 4 ratings.

### Do Thunder & Lightning or BluePD have ads?

Neither Thunder & Lightning nor BluePD shows ads.

### Which is updated more often, Thunder & Lightning or BluePD?

Thunder & Lightning ships an update every 128 months, and BluePD every 5 weeks. Most recently, Thunder & Lightning was updated on October 13, 2026 and BluePD on October 10, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*