# Field Strength Estimator vs Ham2K Portable Logger

The clearest difference is in-app purchases: Field Strength Estimator at none against Ham2K Portable Logger's 8. Field Strength Estimator also leads on review sentiment (100% vs 86%) and iOS requirement (8.0 vs 15.1). Ham2K Portable Logger's advantage is update cadence (monthly vs every 13 months) and rating (4.7 vs 4.3). On price, ads and device support there is nothing between them.

Both are free to download. Ham2K Portable Logger sells 6 in-app purchases, starting at $2.99 per month. Field Strength Estimator asks for nothing beyond the download.

Ham2K Portable Logger holds the better App Store score, 4.7 against 4.3. That said, the two scores are not equally well evidenced: Ham2K Portable Logger has 61 ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 100% of Field Strength Estimator's written reviews are positive against 86% of Ham2K Portable Logger's, so the app with the better star average is not the one people write more warmly about.

Field Strength Estimator ships an update every 13 months, Ham2K Portable Logger monthly. Both last shipped on October 23, 2026.

## The numbers

| Metric | Field Strength Estimator | Ham2K Portable Logger |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (4 ratings)](https://appshunter.io/ios/app/field-strength-estimator/id364229792/reviews) | **[4.7 (61 ratings)](https://appshunter.io/ios/app/ham2k-portable-logger/id6478713938/reviews)** |
| Number of ratings | 4 | **61** |
| Positive reviews | **100.0% of reviews** | 86.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 13 months | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 72 MB | 110 MB |
| Requires iOS | **8.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rohde & Schwarz GmbH & Co. KG](https://appshunter.io/developer/364229795) | [Sebastian Delmont](https://appshunter.io/developer/1722132623) |

## What reviewers say

### Field Strength Estimator

[App page](https://appshunter.io/ios/app/field-strength-estimator/id364229792)

This app estimates field strength and power flux density based on transmitted power, frequency, and antenna gain. It calculates received power at a receiver and automatically converts power flux density to electric and magnetic field strength. It provides theoretical best-case values, not accounting for real-world propagation impairments.

**Highlights:** Calculates power flux density, Estimates electric and magnetic field strength, Calculates received power, Considers antenna gain and transmitted power, Assumes theoretical best-case conditions

**Features:** macOS Compatibility

**In-app purchases:** none


### Ham2K Portable Logger

[App page](https://appshunter.io/ios/app/ham2k-portable-logger/id6478713938)

Log your amateur radio contacts (QSOs) efficiently while on the go. Supports popular operating events like POTA, SOTA, and Field Day, offering features like QRZ lookups, QSO maps, and offline data. Quickly find nearby parks and receive duplicate warnings.

**Highlights:** Log QSOs on the go, Support for POTA, SOTA, Field Day, QRZ.com name lookups, QSO Maps, Offline data files, Duplicate QSO warnings, Search nearby parks

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ham2K Log Filer - Monthly | $2.99 | per month |
| Ham2K Log Filer - Annual | $24.99 | per year |
| Show a bit of support… | $4.99 | one-time |
| Show your support! | $12.99 | one-time |
| Show your support! | $14.99 | one-time |
| Show a lot of support!!! | $29.99 | one-time |


## Frequently asked questions

### Is Field Strength Estimator free?

Field Strength Estimator is free to download, with no in-app purchases.

### Is Ham2K Portable Logger free?

Ham2K Portable Logger is free to download, with in-app purchases available.

### Which has better reviews, Field Strength Estimator or Ham2K Portable Logger?

Ham2K Portable Logger is rated higher. Field Strength Estimator averages 4.3 out of 5 from 4 ratings, while Ham2K Portable Logger averages 4.7 from 61 ratings.

### Do Field Strength Estimator or Ham2K Portable Logger have ads?

Neither Field Strength Estimator nor Ham2K Portable Logger shows ads.

### Which is updated more often, Field Strength Estimator or Ham2K Portable Logger?

Field Strength Estimator ships an update every 13 months, and Ham2K Portable Logger monthly. Most recently, Field Strength Estimator was updated on October 23, 2026 and Ham2K Portable Logger on October 23, 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.*