# Glider Guide vs NumberSlam®

The clearest difference is in-app purchases: Glider Guide at none against NumberSlam®'s 1. Glider Guide also leads on iOS requirement (7.0 vs 13.0). NumberSlam®'s advantage is update cadence (every 6 days vs every 2 weeks). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. NumberSlam® sells 1 one-off in-app purchase. Glider Guide asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Glider Guide against 5.0 for NumberSlam®. Both are backed by a comparable volume of ratings — 3 and 7 respectively.

Glider Guide ships an update every 2 weeks, NumberSlam® every 6 days. The most recent releases landed on September 25, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Glider Guide | NumberSlam® |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/glider-guide/id1494159059/reviews) | [5.0 (7 ratings)](https://appshunter.io/ios/app/numberslam/id1618839777/reviews) |
| Number of ratings | 3 | **7** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 6 days** |
| Monetization | Free | Free |
| Size | 534 MB | 31 MB |
| Requires iOS | **7.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Smithsonian Institution](https://appshunter.io/developer/370564865) | [PIRUX, LLC](https://appshunter.io/developer/1618629503) |

## What reviewers say

### Glider Guide

[App page](https://appshunter.io/ios/app/glider-guide/id1494159059)

Explore five real-world terrains in the US and learn about various land and water features. Test your knowledge with in-game assessments after each flight. Offers both first-person and top-down perspectives for immersive learning.

**Highlights:** Explore real-world US terrains, Learn about 11 land/water features, First-person and top-down views, In-game knowledge assessments, Educational simulation

**Features:** macOS Compatibility

**In-app purchases:** none


### NumberSlam®

[App page](https://appshunter.io/ios/app/numberslam/id1618839777)

This is a fast-paced mental math game designed to enhance your calculation skills on mobile. It's a digital adaptation of a popular classroom game, offering an engaging way to practice math for fun or improvement. The game is ad-free and tracks no user data for a safe, distraction-free experience.

**Highlights:** Improves mental math skills, Engaging and fast-paced gameplay, Digital remake of a popular classroom game, Ad-free experience, Tracking-free for user privacy, Suitable for practice or fun

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Activate NumberSlam | $7.99 | one-time |


## Frequently asked questions

### Is Glider Guide free?

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

### Is NumberSlam® free?

NumberSlam® is free to download, with in-app purchases available.

### Which has better reviews, Glider Guide or NumberSlam®?

Glider Guide and NumberSlam® are both rated 5.0 out of 5 on the App Store, from 3 and 7 ratings respectively.

### Do Glider Guide or NumberSlam® have ads?

Neither Glider Guide nor NumberSlam® shows ads.

### Which is updated more often, Glider Guide or NumberSlam®?

Glider Guide ships an update every 2 weeks, and NumberSlam® every 6 days. Most recently, Glider Guide was updated on September 25, 2026 and NumberSlam® on September 27, 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.*