# Stack the States® 2 vs NumberSlam®

The clearest difference is price: NumberSlam® at Free against Stack the States® 2's $2.99. NumberSlam® also leads on rating (5.0 vs 4.5) and update cadence (every 6 days vs every 9 months). Stack the States® 2's advantage is in-app purchases (none vs 1) and ratings volume (1.1K vs 7). On ads, device support and iOS requirement there is nothing between them.

NumberSlam® is free to download; Stack the States® 2 costs $2.99 up front. NumberSlam® sells 1 one-off in-app purchase. Stack the States® 2 asks for nothing beyond the download.

NumberSlam® holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Stack the States® 2 has 1.1K ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 86% of Stack the States® 2's written reviews are positive against 100% of NumberSlam®'s.

Stack the States® 2 ships an update every 9 months, NumberSlam® every 6 days. The most recent releases landed on September 24, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Stack the States® 2 | NumberSlam® |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [4.5 (1.1K ratings)](https://appshunter.io/ios/app/stack-the-states-2/id1080767538/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/numberslam/id1618839777/reviews)** |
| Number of ratings | **1.1K** | 7 |
| Positive reviews | 86.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 6 days** |
| Monetization | Paid | **Free** |
| Best chart rank | **#32** | — |
| Size | 140 MB | 31 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Freecloud Design, Inc.](https://appshunter.io/developer/324355664) | [PIRUX, LLC](https://appshunter.io/developer/1618629503) |

## What reviewers say

### Stack the States® 2

[App page](https://appshunter.io/ios/app/stack-the-states-2/id1080767538)

**Currently charting:** #32 Top Paid · Education (US App Store)

Learn US geography by stacking animated states to win levels. Collect all 50 states to unlock bonus games and explore an interactive 3D map with detailed information about capitals, cities, and landmarks. Designed for fun and educational play for all ages.

**Highlights:** Interactive 3D map, Learn state capitals, cities, shapes, landmarks, and flags, Collect all 50 states, Unlock bonus games (Map It, Connect 2, Capital Tap), Voice mode for independent play, Hundreds of unique questions, Multiple player profiles

**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 Stack the States® 2 free?

Stack the States® 2 costs $2.99, with no in-app purchases.

### Is NumberSlam® free?

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

### Which has better reviews, Stack the States® 2 or NumberSlam®?

NumberSlam® is rated higher. Stack the States® 2 averages 4.5 out of 5 from 1.1K ratings, while NumberSlam® averages 5.0 from 7 ratings.

### Do Stack the States® 2 or NumberSlam® have ads?

Neither Stack the States® 2 nor NumberSlam® shows ads.

### Which is updated more often, Stack the States® 2 or NumberSlam®?

Stack the States® 2 ships an update every 9 months, and NumberSlam® every 6 days. Most recently, Stack the States® 2 was updated on September 24, 2026 and NumberSlam® on June 1, 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.*