# Fire Pump Operator vs Time Grid

The clearest difference is review sentiment: Time Grid at 100% against Fire Pump Operator's 0%. Time Grid also leads on update cadence (every 5 days vs every 6 weeks) and monetization model (free with in-app purchases vs paid). Fire Pump Operator's advantage is iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Fire Pump Operator sells 2 in-app purchases, starting at $1.99 per month and Time Grid sells 3 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Fire Pump Operator ships an update every 6 weeks, Time Grid every 5 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Fire Pump Operator | Time Grid |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/time-grid-life-in-dots/id6804736139/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 5 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 48 MB | 17 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Digital Training Systems Incorporated](https://appshunter.io/developer/320642446) | [佳宇 刘](https://appshunter.io/developer/1782912378) |

## What reviewers say

### Fire Pump Operator

[App page](https://appshunter.io/ios/app/fire-pump-operator/id1044180312)

This app assists fire pump operators in calculating engine pressure using a standard formula. It allows for the addition of multiple friction losses, appliances, and elevations, and offers the ability to save and modify entries. Users can also adjust default coefficients and access other relevant calculators.

**Highlights:** Engine Pressure calculation, Add friction losses, appliances, elevations, Save and modify entries, Adjust IFSTA coefficients, Head Pressure calculator, NFA Formula calculator

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fire Pump Operator Pro | $1.99 | per month |
| Fire Pump Operator Pro | $19.99 | per year |


### Time Grid

[App page](https://appshunter.io/ios/app/time-grid-life-in-dots/id6804736139)

Visualize the passage of time with expressive Home Screen widgets. Track daily, weekly, monthly, and yearly progress, or monitor custom milestones. Offers a variety of unique visual styles to represent your time at a glance.

**Highlights:** Home screen widgets for time visualization, Track daily, weekly, monthly, yearly progress, Custom date range tracking, Life progress based on birthday, Multiple unique widget styles, Personalizable mottos and colors

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Time Grid Pro Weekly | $0.99 | per 7 days |
| Time Grid Pro Yearly | $4.99 | per year |
| Time Grid Pro Lifetime | $9.99 | one-time |


## Frequently asked questions

### Is Fire Pump Operator free?

Fire Pump Operator is free to download, with in-app purchases available.

### Is Time Grid free?

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

### Do Fire Pump Operator or Time Grid have ads?

Neither Fire Pump Operator nor Time Grid shows ads.

### Which is updated more often, Fire Pump Operator or Time Grid?

Fire Pump Operator ships an update every 6 weeks, and Time Grid every 5 days. Most recently, Fire Pump Operator was updated on October 24, 2026 and Time Grid on October 25, 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.*