# Fire Pump Operator vs InstantLog

The clearest difference is review sentiment: InstantLog at 100% against Fire Pump Operator's 0%. InstantLog also leads on monetization model (free with in-app purchases vs paid). Fire Pump Operator's advantage is ads (none vs shown) and iOS requirement (15.0 vs 17.0). On price, update cadence, 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 InstantLog sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Fire Pump Operator ships an update every 6 weeks, InstantLog every 2 months. The most recent releases landed on October 24, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Fire Pump Operator | InstantLog |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/instantlog-quick-timestamp/id6757126092/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 48 MB | 8 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Digital Training Systems Incorporated](https://appshunter.io/developer/320642446) | [WEI-LUN HUANG](https://appshunter.io/developer/1540087284) |

## 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 |


### InstantLog

[App page](https://appshunter.io/ios/app/instantlog-quick-timestamp/id6757126092)

Effortlessly capture important moments with a single tap. Log time for work, study, or routines, add notes, and organize entries with custom tags. Offers smart auto-fill and history viewing for easy management.

**Highlights:** One-tap time logging, Custom time entry, Quick tags for categorization, Smart auto-fill notes, History view with search and filters, CSV export (Premium), Backup and restore (Premium), Home screen widgets, Apple Watch support

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| InstantLog - Quick Timestamp | $1.99 | one-time |


## Frequently asked questions

### Is Fire Pump Operator free?

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

### Is InstantLog free?

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

### Do Fire Pump Operator or InstantLog have ads?

InstantLog shows ads; Fire Pump Operator does not.

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

Fire Pump Operator ships an update every 6 weeks, and InstantLog every 2 months. Most recently, Fire Pump Operator was updated on October 24, 2026 and InstantLog on October 13, 2026.

---

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