# Librarian vs Antenna+

The clearest difference is in-app purchases: Librarian at none against Antenna+'s 2. Antenna+'s advantage is ads (none vs shown) and update cadence (every 5 weeks vs every 4 months). On price and iOS requirement there is nothing between them.

Both are free to download. Antenna+ sells 2 in-app purchases, starting at $1.99 per month. Librarian asks for nothing beyond the download.

Librarian ships an update every 4 months, Antenna+ every 5 weeks. Both last shipped on November 1, 2026.

## The numbers

| Metric | Librarian | Antenna+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/antenna-plus-cwpdk31dtmf/id466305239/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 47.1% of reviews | **60.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 5 weeks** |
| Monetization | **Ad-supported** | Paid |
| Size | 8 MB | 11 MB |
| Requires iOS | 18.6 | **17.6** |
| Devices | iPhone | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | +4 |
| Developer | [shinichi tanimoto](https://appshunter.io/developer/338978015) | [Verosocial Studio](https://appshunter.io/developer/354566841) |

## What reviewers say

### Librarian

[App page](https://appshunter.io/ios/app/librarian-library-search/id383815613)

Easily find libraries and books across Japan. Search by map, area, or your current location, and look for books by keyword or genre. Check book availability at nearby libraries.

**Highlights:** Search libraries by map, Search libraries by area, Search libraries by current location, Search books by keyword, Search books by genre, Check book availability

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

**In-app purchases:** none


### Antenna+

[App page](https://appshunter.io/ios/app/antenna-plus-cwpdk31dtmf/id466305239)

This toolkit offers amateur radio operators and RF hobbyists essential formulas and instant results for antenna design, feedline loss, and signal utilities. It includes calculators for antenna length, frequency conversion, VSWR, and propagation planning, along with DTMF and Morse code tools.

**Highlights:** Antenna length calculators, Frequency-to-wavelength conversion, VSWR and ERP calculators, Horizon visibility and solar calculators, DTMF decoding/keying, Morse/PSK31 tools

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly All Access Pro Usage | $1.99 | per month |
| Antenna Pro lifetime Upgrade | $14.99 | one-time |


## Frequently asked questions

### Is Librarian free?

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

### Is Antenna+ free?

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

### Do Librarian or Antenna+ have ads?

Librarian shows ads; Antenna+ does not.

### Which is updated more often, Librarian or Antenna+?

Librarian ships an update every 4 months, and Antenna+ every 5 weeks. Most recently, Librarian was updated on November 1, 2026 and Antenna+ on November 1, 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.*