# Notekeepr by Upbooks vs audio compressor

The clearest difference is in-app purchases: Notekeepr by Upbooks at none against audio compressor's 2. Notekeepr by Upbooks also leads on device support (3 vs 1) and iOS requirement (13.4 vs 17.5). audio compressor's advantage is update cadence (every 6 weeks vs every 7 months). On price and ads there is nothing between them.

Both are free to download. audio compressor sells 2 in-app purchases, starting at $3.99 per 7 days. Notekeepr by Upbooks asks for nothing beyond the download.

Notekeepr by Upbooks ships an update every 7 months, audio compressor every 6 weeks. The most recent releases landed on September 8, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Notekeepr by Upbooks | audio compressor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/audio-compressor/id6612031833/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 6 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 24 MB | 1 MB |
| Requires iOS | **13.4** | 17.5 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Scrrum Labs Private Limited](https://appshunter.io/developer/1595543937) | [Muhammed Efdal incesu](https://appshunter.io/developer/1748859357) |

## What reviewers say

### Notekeepr by Upbooks

[App page](https://appshunter.io/ios/app/notekeepr-by-upbooks/id6501962174)

**Features:** macOS Compatibility

**In-app purchases:** none


### audio compressor

[App page](https://appshunter.io/ios/app/audio-compressor/id6612031833)

This utility app allows users to efficiently reduce the file size of their audio recordings. It offers a simple interface for selecting, compressing, and sharing audio, helping to save storage space and facilitate faster file transfers.

**Highlights:** Reduce audio file size, Maintain audio quality, Select and compress audio, Share compressed files, Save storage space

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Audio Compressor Weekly | $3.99 | per 7 days |
| Audio Compressor Lifetime | $17.99 | one-time |


## Frequently asked questions

### Is Notekeepr by Upbooks free?

Notekeepr by Upbooks is free to download, with no in-app purchases.

### Is audio compressor free?

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

### Do Notekeepr by Upbooks or audio compressor have ads?

Neither Notekeepr by Upbooks nor audio compressor shows ads.

### Which is updated more often, Notekeepr by Upbooks or audio compressor?

Notekeepr by Upbooks ships an update every 7 months, and audio compressor every 6 weeks. Most recently, Notekeepr by Upbooks was updated on September 8, 2026 and audio compressor on September 17, 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.*