# Shotgun Timer vs Power Factor Estimator

The clearest difference is update cadence: Power Factor Estimator at every 3 days against Shotgun Timer's every 3 months. Shotgun Timer's advantage is iOS requirement (12.0 vs 15.4). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Shotgun Timer ships an update every 3 months, Power Factor Estimator every 3 days. The most recent releases landed on October 10, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Shotgun Timer | Power Factor Estimator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/power-factor-estimator/id1626401337/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 days** |
| Monetization | — | Free |
| Size | 30 MB | 1 MB |
| Requires iOS | **12.0** | 15.4 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Michal Gabryelski](https://appshunter.io/developer/1570180157) | [Oleg Udovenko](https://appshunter.io/developer/1626401339) |

## What reviewers say

### Shotgun Timer

[App page](https://appshunter.io/ios/app/shotgun-timer/id1570180155)

**In-app purchases:** none


### Power Factor Estimator

[App page](https://appshunter.io/ios/app/power-factor-estimator/id1626401337)

This app calculates power factor, average velocity, and velocity spread from projectile weight and velocity data. It allows users to input velocities, view minimum and maximum values, and manage data through add, remove, clear, and reset functions.

**Highlights:** Calculate Power Factor, Calculate Average Velocity, Calculate Velocity Spread, View Min/Max Velocity, Add Velocity Data, Remove Velocity Data, Clear Velocity Table

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Shotgun Timer free?

Shotgun Timer is free to download, with no in-app purchases.

### Is Power Factor Estimator free?

Power Factor Estimator is free to download, with no in-app purchases.

### Do Shotgun Timer or Power Factor Estimator have ads?

Neither Shotgun Timer nor Power Factor Estimator shows ads.

### Which is updated more often, Shotgun Timer or Power Factor Estimator?

Shotgun Timer ships an update every 3 months, and Power Factor Estimator every 3 days. Most recently, Shotgun Timer was updated on October 10, 2026 and Power Factor Estimator on October 3, 2026.

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