# Complex Map vs B# or Bb

The clearest difference is review sentiment: Complex Map at 100% against B# or Bb's 50%. Complex Map also leads on rating (5.0 vs 4.0) and iOS requirement (7.1 vs 15.1). B# or Bb's advantage is in-app purchases (none vs 1) and update cadence (every 8 days vs every 2 months). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Complex Map sells 1 one-off in-app purchase. B# or Bb asks for nothing beyond the download.

Complex Map holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 3 and 4 respectively. Written reviews point the same way: 100% of Complex Map's written reviews are positive against 50% of B# or Bb's.

Complex Map ships an update every 2 months, B# or Bb every 8 days. The most recent releases landed on October 11, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Complex Map | B# or Bb |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/complex-map/id827104452/reviews)** | [4.0 (4 ratings)](https://appshunter.io/ios/app/b-or-bb-ear-and-vocal-trainer/id6760126081/reviews) |
| Number of ratings | 3 | **4** |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 8 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 5 MB | 33 MB |
| Requires iOS | **7.1** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TinkaTinka](https://appshunter.io/developer/505803809) | [Mark Rose](https://appshunter.io/developer/1882768719) |

## What reviewers say

### Complex Map

[App page](https://appshunter.io/ios/app/complex-map/id827104452)

This app visualizes complex variable functions by transforming images mapped to the complex plane. It allows users to import their own images or use predefined ones, and export the results.

**Highlights:** Complex function parser, Predefined and custom image import, Image export and sharing, Supports standard functions and constants

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### B# or Bb

[App page](https://appshunter.io/ios/app/b-or-bb-ear-and-vocal-trainer/id6760126081)

This app helps you develop your musical ear and vocal abilities. You can hear a note and then replicate it on a piano, or by singing or whistling. It's designed for ear training and vocal practice.

**Highlights:** Hear and match notes, Replicate notes by singing, Replicate notes by whistling, Piano interface for note matching, Ear training exercises, Vocal practice tools

**In-app purchases:** none


## Frequently asked questions

### Is Complex Map free?

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

### Is B# or Bb free?

B# or Bb is free to download, with no in-app purchases.

### Which has better reviews, Complex Map or B# or Bb?

Complex Map is rated higher. Complex Map averages 5.0 out of 5 from 3 ratings, while B# or Bb averages 4.0 from 4 ratings.

### Do Complex Map or B# or Bb have ads?

Neither Complex Map nor B# or Bb shows ads.

### Which is updated more often, Complex Map or B# or Bb?

Complex Map ships an update every 2 months, and B# or Bb every 8 days. Most recently, Complex Map was updated on October 11, 2026 and B# or Bb on October 2, 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.*