# Leaflet for Swift&Algorithm vs Programmer Calculator

Leaflet for Swift&Algorithm and Programmer Calculator both sit at 4.6 stars, but that hides the real split: 71% of Leaflet for Swift&Algorithm's written reviews are positive against 42% of Programmer Calculator's. Leaflet for Swift&Algorithm also leads on update cadence (every 6 days vs fortnightly) and ratings volume (297 vs 32). Programmer Calculator's advantage is iOS requirement (14.0 vs 26.0). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Leaflet for Swift&Algorithm sells 1 one-off in-app purchase and Programmer Calculator sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.6 for Leaflet for Swift&Algorithm against 4.6 for Programmer Calculator. That said, the two scores are not equally well evidenced: Leaflet for Swift&Algorithm has 297 ratings behind it against 32, so its average is the more settled of the two. Written reviews are what separate them: 71% of Leaflet for Swift&Algorithm's written reviews are positive against 42% of Programmer Calculator's.

Leaflet for Swift&Algorithm ships an update every 6 days, Programmer Calculator fortnightly. The most recent releases landed on September 21, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Leaflet for Swift&Algorithm | Programmer Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (297 ratings)](https://appshunter.io/ios/app/leaflet-for-swift-and-algorithm/id1420814118/reviews) | [4.6 (32 ratings)](https://appshunter.io/ios/app/programmer-calculator-dev/id1624892520/reviews) |
| Number of ratings | **297** | 32 |
| Positive reviews | **71.4% of reviews** | 42.1% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Fortnightly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 54 MB | 5 MB |
| Requires iOS | 26.0 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [雷 戴](https://appshunter.io/developer/696880612) | [永超 侯](https://appshunter.io/developer/906391544) |

## What reviewers say

### 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)


### Programmer Calculator

[App page](https://appshunter.io/ios/app/programmer-calculator-dev/id1624892520)

This tool assists developers with number base conversions and CRC calculations for strings and hex bytes. Additional features are planned for future updates.

**Highlights:** Number base conversion, CRC calculation, String to hex conversion, Hex byte CRC calculation, Developer support tool

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| A coke | $0.99 | one-time |
| A cup of coffee | $2.99 | one-time |
| A big meal | $5.99 | one-time |


## Frequently asked questions

### Is Leaflet for Swift&Algorithm free?

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

### Is Programmer Calculator free?

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

### Which has better reviews, Leaflet for Swift&Algorithm or Programmer Calculator?

Leaflet for Swift&Algorithm and Programmer Calculator are both rated 4.6 out of 5 on the App Store, from 297 and 32 ratings respectively.

### Do Leaflet for Swift&Algorithm or Programmer Calculator have ads?

Neither Leaflet for Swift&Algorithm nor Programmer Calculator shows ads.

### Which is updated more often, Leaflet for Swift&Algorithm or Programmer Calculator?

Leaflet for Swift&Algorithm ships an update every 6 days, and Programmer Calculator fortnightly. Most recently, Leaflet for Swift&Algorithm was updated on September 21, 2026 and Programmer Calculator on September 23, 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.*