# Amount Plus vs Memex

The clearest difference is price: Memex at Free against Amount Plus's $0.90. Memex also leads on update cadence (every 6 days vs monthly). Amount Plus's advantage is device support (4 vs 1) and iOS requirement (9.0 vs 16.4). On ads and in-app purchases there is nothing between them.

Memex is free to download; Amount Plus costs $0.90 up front. Neither carries in-app purchases, so what you see is what you pay.

Amount Plus ships an update monthly, Memex every 6 days. Both last shipped on November 13, 2026.

## The numbers

| Metric | Amount Plus | Memex |
| --- | --- | --- |
| Price | $0.90 | **Free** |
| Rating | **[4.3 (96 ratings)](https://appshunter.io/ios/app/amount-plus-unit-converter/id1031021466/reviews)** | — |
| Number of ratings | **96** | — |
| Positive reviews | 61.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 6 days** |
| Monetization | Paid | — |
| Size | 7 MB | 54 MB |
| Requires iOS | **9.0** | 16.4 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Marco Torretta](https://appshunter.io/developer/560750786) | [DASEUL KIM](https://appshunter.io/developer/6786170402) |

## What reviewers say

### Amount Plus

[App page](https://appshunter.io/ios/app/amount-plus-unit-converter/id1031021466)

This app offers an enhanced unit conversion experience with a beautiful interface and extensive customization. It provides over 700 units across 30 categories, advanced search and filtering, and shortcuts for quick conversions. It also supports widgets and Apple Watch for convenient access.

**Highlights:** Over 700 units in 30+ categories, Advanced search, filter, and compare, Customizable shortcuts for fast conversions, User-definable custom units, Today widget and Apple Watch support, Gorgeous, user-friendly interface

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

**In-app purchases:** none


### Memex

[App page](https://appshunter.io/ios/app/memex-memory-notes/id6786170400)

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

**In-app purchases:** none


## Frequently asked questions

### Is Amount Plus free?

Amount Plus costs $0.90, with no in-app purchases.

### Is Memex free?

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

### Do Amount Plus or Memex have ads?

Neither Amount Plus nor Memex shows ads.

### Which is updated more often, Amount Plus or Memex?

Amount Plus ships an update monthly, and Memex every 6 days. Most recently, Amount Plus was updated on November 13, 2026 and Memex on November 13, 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.*