# Adaptivity (B) vs Leaflet for Swift&Algorithm

The clearest difference is in-app purchases: Adaptivity (B) at none against Leaflet for Swift&Algorithm's 1. Adaptivity (B) also leads on review sentiment (100% vs 71%) and rating (5.0 vs 4.6). Leaflet for Swift&Algorithm's advantage is update cadence (every 8 days vs every 2 months) and ratings volume (297 vs 9). On price, ads and device support there is nothing between them.

Both are free to download. Leaflet for Swift&Algorithm sells 1 one-off in-app purchase. Adaptivity (B) asks for nothing beyond the download.

Adaptivity (B) holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Leaflet for Swift&Algorithm has 297 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 100% of Adaptivity (B)'s written reviews are positive against 71% of Leaflet for Swift&Algorithm's.

Adaptivity (B) ships an update every 2 months, Leaflet for Swift&Algorithm every 8 days. The most recent releases landed on September 22, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Adaptivity (B) | Leaflet for Swift&Algorithm |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (9 ratings)](https://appshunter.io/ios/app/adaptivity-b/id1054670026/reviews)** | [4.6 (297 ratings)](https://appshunter.io/ios/app/leaflet-for-swift-and-algorithm/id1420814118/reviews) |
| Number of ratings | 9 | **297** |
| Positive reviews | **100.0% of reviews** | 71.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 8 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 12 MB | 53 MB |
| Requires iOS | **11.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Geoff Hackworth](https://appshunter.io/developer/463855590) | [雷 戴](https://appshunter.io/developer/696880612) |

## What reviewers say

### Adaptivity (B)

[App page](https://appshunter.io/ios/app/adaptivity-b/id1054670026)

Visualize how app layouts appear on various devices and adapt to different settings like orientation, multitasking, and text size changes. This free version offers essential tools for developers and designers to preview their work.

**Highlights:** Visualize layout sizes, Display sizes in points or pixels, Toggle status bar visibility, Support for iPad multitasking, Dark appearance support, Force right-to-left layout, Handoff actions

**Features:** Vision Pro support

**In-app purchases:** none


### Leaflet for Swift&Algorithm

[App page](https://appshunter.io/ios/app/leaflet-for-swift-and-algorithm/id1420814118)

This app offers comprehensive learning modules for Swift, SwiftUI, and Combine, alongside data structures and algorithms. It provides micro-classes, tutorials, code style guides, and practical examples to help users master programming concepts and develop efficient applications.

**Highlights:** Swift language tutorials, SwiftUI and Combine development, Data structure and algorithm learning, Micro-classes for core concepts, Code style guide, Algorithm problem-solving examples

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Get Pro Version | $0.99 | one-time |

**What reviewers like**

- 👍 Good explanations
- 👍 Easy to use
- 👍 Clean interface
- 👍 Helpful for learning
- 👍 Lovely app

**What reviewers complain about**

- 🐛 Solutions not loading
- 🐛 App crashes on launch
- 🐛 Frequent crashes
- 🐛 Not a true dark mode
- 🐛 Code formatting issues

**Reported bugs**

- Solutions for problems are not loading
- App crashes on first load
- App crashes immediately on launch
- App crashes after first use and backgrounding
- Paid for pro user, but no answers for many questions

**Requested features**

- Add more iOS technical upgrades
- Add filter options for algorithms (e.g., top 100, top 200)
- Allow users to write their own notes for algorithms
- Add JavaScript examples
- Allow users to suggest/edit explanations (wiki-like)


## Frequently asked questions

### Is Adaptivity (B) free?

Adaptivity (B) is free to download, with no in-app purchases.

### Is Leaflet for Swift&Algorithm free?

Leaflet for Swift&Algorithm is free to download, with in-app purchases available.

### Which has better reviews, Adaptivity (B) or Leaflet for Swift&Algorithm?

Adaptivity (B) is rated higher. Adaptivity (B) averages 5.0 out of 5 from 9 ratings, while Leaflet for Swift&Algorithm averages 4.6 from 297 ratings.

### Do Adaptivity (B) or Leaflet for Swift&Algorithm have ads?

Neither Adaptivity (B) nor Leaflet for Swift&Algorithm shows ads.

### Which is updated more often, Adaptivity (B) or Leaflet for Swift&Algorithm?

Adaptivity (B) ships an update every 2 months, and Leaflet for Swift&Algorithm every 8 days. Most recently, Adaptivity (B) was updated on September 22, 2026 and Leaflet for Swift&Algorithm on October 14, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*