# TRASOL vs ESF

The clearest difference is in-app purchases: ESF at none against TRASOL's 1. ESF also leads on update cadence (every 3 months vs every 10 months). TRASOL's advantage is iOS requirement (12.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. TRASOL sells 1 one-off in-app purchase. ESF asks for nothing beyond the download.

TRASOL ships an update every 10 months, ESF every 3 months. The most recent releases landed on September 23, 2026 and May 20, 2026 respectively.

## The numbers

| Metric | TRASOL | ESF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (40 ratings)](https://appshunter.io/ios/app/trasol/id1015112834/reviews)** | — |
| Number of ratings | **40** | — |
| Positive reviews | 52.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 3 months** |
| Monetization | Free with in-app purchases | — |
| Size | 11 MB | 35 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Desert Tech](https://appshunter.io/developer/1015112833) | [Enric Serrano Murt](https://appshunter.io/developer/1111151114) |

## What reviewers say

### TRASOL

[App page](https://appshunter.io/ios/app/trasol/id1015112834)

This advanced ballistic calculator provides real-time environmental data and trajectory predictions for precision shooting. It features a heads-up display for automatic target solutions, moving target tracking, and shot logging capabilities.

**Highlights:** Real-time sensor integration, Heads-up display (HUD), Moving target tracking, Unlimited equipment profiles, Cloud backup/sync, Long-range accuracy up to 5000 yards, Scope turret calibration

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full TRASOL Upgrade | $39.99 | one-time |


### ESF

[App page](https://appshunter.io/ios/app/esf/id1441362200)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TRASOL free?

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

### Is ESF free?

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

### Do TRASOL or ESF have ads?

Neither TRASOL nor ESF shows ads.

### Which is updated more often, TRASOL or ESF?

TRASOL ships an update every 10 months, and ESF every 3 months. Most recently, TRASOL was updated on September 23, 2026 and ESF on May 20, 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.*