# Librarian vs MeasureWarm

The clearest difference is review sentiment: Librarian at 47% against MeasureWarm's 0%. MeasureWarm's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, update cadence and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Librarian ships an update every 4 months, MeasureWarm every 6 months. Both last shipped on November 1, 2026.

## The numbers

| Metric | Librarian | MeasureWarm |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (2 ratings)](https://appshunter.io/ios/app/measurewarm/id460786853/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | **47.1% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 4 months** | Every 6 months |
| Monetization | Ad-supported | **Free** |
| Size | 8 MB | 23 MB |
| Requires iOS | 18.6 | **9.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [shinichi tanimoto](https://appshunter.io/developer/338978015) | [Mika Hatakeyama](https://appshunter.io/developer/445272831) |

## 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


### MeasureWarm

[App page](https://appshunter.io/ios/app/measurewarm/id460786853)

This utility app allows you to measure the approximate size of objects when a ruler is not available. It supports various devices and offers conversion between metric and imperial units.

**Highlights:** Virtual ruler for approximate measurements, Supports iPhone, iPad, and iPod, Metric and imperial unit conversion, Adjustable device size for accuracy, Instructional animation for complex measurements

**In-app purchases:** none


## Frequently asked questions

### Is Librarian free?

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

### Is MeasureWarm free?

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

### Do Librarian or MeasureWarm have ads?

Librarian shows ads; MeasureWarm does not.

### Which is updated more often, Librarian or MeasureWarm?

Librarian ships an update every 4 months, and MeasureWarm every 6 months. Most recently, Librarian was updated on November 1, 2026 and MeasureWarm 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.*