# 303 Note vs CurbScope

The clearest difference is in-app purchases: 303 Note at none against CurbScope's 5. 303 Note also leads on ads (none vs shown). CurbScope's advantage is update cadence (weekly vs every 4 weeks) and iOS requirement (15.1 vs 18.6). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. CurbScope sells 5 in-app purchases, starting at $10.99 per month. 303 Note asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for 303 Note against 5.0 for CurbScope. Both are backed by a comparable volume of ratings — 7 and 14 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

303 Note ships an update every 4 weeks, CurbScope weekly. The most recent releases landed on October 17, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | 303 Note | CurbScope |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (7 ratings)](https://appshunter.io/ios/app/303-note-acid-sequencer/id1501084395/reviews) | **[5.0 (14 ratings)](https://appshunter.io/ios/app/curbscope-ar-property-data/id6794147057/reviews)** |
| Number of ratings | 7 | **14** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 weeks | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 23 MB | 41 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [tsubasa hattori](https://appshunter.io/developer/1501084394) | [Stephen Englert](https://appshunter.io/developer/6794147059) |

## What reviewers say

### 303 Note

[App page](https://appshunter.io/ios/app/303-note-acid-sequencer/id1501084395)

Quickly create, manage, and play back acid bassline synth sequences. Features a step sequencer, built-in synth knobs for tone shaping, and CSV export for backups. Ideal for musicians needing to save and recall patterns.

**Highlights:** Step sequencer interface, Instant pattern playback, TB-303 style tone knobs, CSV pattern export, Dark mode support

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

**In-app purchases:** none


### CurbScope

[App page](https://appshunter.io/ios/app/curbscope-ar-property-data/id6794147057)

This app uses your phone's camera to display augmented reality information over properties, including ownership, sales history, and contact details. It's designed for real estate professionals and others who need quick access to property owner information and direct communication tools.

**Highlights:** Live AR property information overlay, Ownership and sales history, Owner contact details retrieval, In-app postcard mailing, Map search and filtering, Property watchlists and alerts

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CurbScope Basic | $10.99 | per month |
| CurbScope Premium | $39.99 | per month |
| CurbScope Pro | $129.99 | per month |
| CurbScope Premium (Annual) | $429.99 | per year |
| CurbScope Pro (Annual) | $999.99 | per year |


## Frequently asked questions

### Is 303 Note free?

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

### Is CurbScope free?

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

### Which has better reviews, 303 Note or CurbScope?

CurbScope is rated higher. 303 Note averages 4.9 out of 5 from 7 ratings, while CurbScope averages 5.0 from 14 ratings.

### Do 303 Note or CurbScope have ads?

CurbScope shows ads; 303 Note does not.

### Which is updated more often, 303 Note or CurbScope?

303 Note ships an update every 4 weeks, and CurbScope weekly. Most recently, 303 Note was updated on October 17, 2026 and CurbScope on October 22, 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.*