# Math Shelf vs Resfly

The clearest difference is in-app purchases: Resfly at none against Math Shelf's 10. Resfly also leads on update cadence (daily vs every 4 months) and rating (5.0 vs 4.7). Math Shelf's advantage is ratings volume (15 vs 2) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. Math Shelf sells 10 in-app purchases, starting at $4.99 per month. Resfly asks for nothing beyond the download.

Resfly holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Math Shelf has 15 ratings behind it against 2, so its average is the more settled of the two.

Math Shelf ships an update every 4 months, Resfly daily. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Math Shelf | Resfly |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (15 ratings)](https://appshunter.io/ios/app/math-shelf-early-math-mastery/id940278648/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/resfly/id6794766213/reviews)** |
| Number of ratings | **15** | 2 |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Daily** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 380 MB | 42 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [John Schacter](https://appshunter.io/developer/940278647) | [FADEL HANOUN](https://appshunter.io/developer/6794766215) |

## What reviewers say

### Math Shelf

[App page](https://appshunter.io/ios/app/math-shelf-early-math-mastery/id940278648)

This app provides an experimentally proven program to enhance early mathematics achievement for preschool and kindergarten students. It offers on-level instruction through adaptive learning and placement tests, aligning with Common Core Standards.

**Highlights:** Experimentally proven to increase math achievement, Common Core Aligned content, Adaptive learning and placement tests, Cloud-based syncing for school and home, Free 7-day trial, Supports iPhone, iPad, and iPod

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Access | $4.99 | per month |
| 1 Year Access | $41.99 | per year |
| 1 Students Monthly Subscription | $1.99 | one-time |
| 1 Student Monthly Subscription | $2.99 | one-time |
| 2 Students Monthly Subscription | $3.99 | one-time |
| 3 Students Monthly Subscription | $5.99 | one-time |
| 2 Students Monthly Subscription | $5.99 | one-time |
| 3 Students Monthly Subscription | $8.99 | one-time |
| 3 Students Subscription | $9.99 | one-time |
| 4 Students Monthly Subscription | $11.99 | 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 Math Shelf free?

Math Shelf 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, Math Shelf or Resfly?

Resfly is rated higher. Math Shelf averages 4.7 out of 5 from 15 ratings, while Resfly averages 5.0 from 2 ratings.

### Do Math Shelf or Resfly have ads?

Neither Math Shelf nor Resfly shows ads.

### Which is updated more often, Math Shelf or Resfly?

Math Shelf ships an update every 4 months, and Resfly daily. Most recently, Math Shelf was updated on November 1, 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.*