# Sudoku Coach vs Resfly

The clearest difference is rating: Resfly at 5.0 against Sudoku Coach's 4.3. Resfly also leads on in-app purchases (none vs 3) and update cadence (daily vs every 3 weeks). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Sudoku Coach sells 3 in-app purchases, starting at $0.99 per 7 days. Resfly asks for nothing beyond the download.

Resfly holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 4 and 2 respectively.

Sudoku Coach ships an update every 3 weeks, Resfly daily. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Sudoku Coach | Resfly |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (4 ratings)](https://appshunter.io/ios/app/sudoku-coach-trainer/id6758725909/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/resfly/id6794766213/reviews)** |
| Number of ratings | **4** | 2 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Daily** |
| Monetization | Freemium | **Free** |
| Size | 18 MB | 42 MB |
| Requires iOS | 18.4 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Feifei Song](https://appshunter.io/developer/1874604837) | [FADEL HANOUN](https://appshunter.io/developer/6794766215) |

## What reviewers say

### Sudoku Coach

[App page](https://appshunter.io/ios/app/sudoku-coach-trainer/id6758725909)

This app teaches you how to solve Sudoku puzzles by guiding you through logical steps and explaining techniques. It offers tiered hints, practice modes, and progress tracking to improve your skills. Unlock unlimited hints and advanced learning modes with a subscription.

**Highlights:** Smart, tiered hints, Clear explanations, Technique Learning mode, Pencil mark notes, Daily challenges, Progress tracking

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SudokuCoach Weekly | $0.99 | per 7 days |
| SudokuCoach Monthly | $1.99 | per month |
| SudokuCoach Yearly | $9.99 | per year |


### Resfly

[App page](https://appshunter.io/ios/app/resfly/id6794766213)

This app streamlines medical residency programs by centralizing schedules, training records, and communication for residents, faculty, and coordinators. It offers a glance at daily tasks, manages rotations, and facilitates conference participation and document tracking.

**Highlights:** Daily schedule overview, Rotation and conference management, Training record logging, Program-wide communication, Document management, Configurable reminders

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

**In-app purchases:** none


## Frequently asked questions

### Is Sudoku Coach free?

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

### Is Resfly free?

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

### Which has better reviews, Sudoku Coach or Resfly?

Resfly is rated higher. Sudoku Coach averages 4.3 out of 5 from 4 ratings, while Resfly averages 5.0 from 2 ratings.

### Do Sudoku Coach or Resfly have ads?

Neither Sudoku Coach nor Resfly shows ads.

### Which is updated more often, Sudoku Coach or Resfly?

Sudoku Coach ships an update every 3 weeks, and Resfly daily. Most recently, Sudoku Coach was updated on October 31, 2026 and Resfly on November 6, 2026.

---

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