# Addition Mathematics vs Resfly

The clearest difference is in-app purchases: Resfly at none against Addition Mathematics's 1. Resfly also leads on update cadence (daily vs every 2 weeks) and rating (5.0 vs 4.8). Addition Mathematics's advantage is ratings volume (22 vs 2). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Addition Mathematics sells 1 one-off in-app purchase. Resfly asks for nothing beyond the download.

Resfly holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Addition Mathematics has 22 ratings behind it against 2, so its average is the more settled of the two.

Addition Mathematics ships an update every 2 weeks, Resfly daily. The most recent releases landed on November 7, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Addition Mathematics | Resfly |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (22 ratings)](https://appshunter.io/ios/app/addition-mathematics/id1660953482/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/resfly/id6794766213/reviews)** |
| Number of ratings | **22** | 2 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Daily** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 141 MB | 42 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [PROGRAMIS PRIME LLC](https://appshunter.io/developer/1051843545) | [FADEL HANOUN](https://appshunter.io/developer/6794766215) |

## What reviewers say

### Addition Mathematics

[App page](https://appshunter.io/ios/app/addition-mathematics/id1660953482)

This app teaches children multi-digit addition with step-by-step guidance and positive reinforcement. It adapts to the student's learning pace, offering practice on specific number combinations and even recognizing handwritten answers. Advanced features and customization options are available via in-app purchase.

**Highlights:** Multi-digit addition practice, Step-by-step instructions, AI handwriting recognition, Progress monitoring, Customizable practice, Positive reinforcement

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Get All Features | $3.99 | one-time |


### 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 Addition Mathematics free?

Addition Mathematics 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, Addition Mathematics or Resfly?

Resfly is rated higher. Addition Mathematics averages 4.8 out of 5 from 22 ratings, while Resfly averages 5.0 from 2 ratings.

### Do Addition Mathematics or Resfly have ads?

Neither Addition Mathematics nor Resfly shows ads.

### Which is updated more often, Addition Mathematics or Resfly?

Addition Mathematics ships an update every 2 weeks, and Resfly daily. Most recently, Addition Mathematics was updated on November 7, 2026 and Resfly on November 6, 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.*