# OPQRcoder vs AquAssist Note

The clearest difference is price: OPQRcoder at Free against AquAssist Note's $1.99. AquAssist Note's advantage is in-app purchases (none vs 1) and update cadence (every 2 weeks vs every 16 months). On ads, device support and iOS requirement there is nothing between them.

OPQRcoder is free to download; AquAssist Note costs $1.99 up front. OPQRcoder sells 1 one-off in-app purchase. AquAssist Note asks for nothing beyond the download.

OPQRcoder ships an update every 16 months, AquAssist Note every 2 weeks. The most recent releases landed on September 25, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | OPQRcoder | AquAssist Note |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 2 weeks** |
| Size | 37 MB | 35 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Takaho Endo](https://appshunter.io/developer/1705551687) | [Ryota Asonuma](https://appshunter.io/developer/1882116253) |

## What reviewers say

### OPQRcoder

[App page](https://appshunter.io/ios/app/opqrcoder/id6464173069)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OPQRcoder Pro | $1.99 | one-time |


### AquAssist Note

[App page](https://appshunter.io/ios/app/aquassist-note/id6759988139)

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

**In-app purchases:** none


## Frequently asked questions

### Is OPQRcoder free?

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

### Is AquAssist Note free?

AquAssist Note costs $1.99, with no in-app purchases.

### Do OPQRcoder or AquAssist Note have ads?

Neither OPQRcoder nor AquAssist Note shows ads.

### Which is updated more often, OPQRcoder or AquAssist Note?

OPQRcoder ships an update every 16 months, and AquAssist Note every 2 weeks. Most recently, OPQRcoder was updated on September 25, 2026 and AquAssist Note on September 24, 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.*