# Grandpa In Space vs Tower Math®

The clearest difference is rating: Grandpa In Space at 4.8 against Tower Math®'s 4.1. Tower Math®'s advantage is review sentiment (74% vs 60%) and chart position (#192 vs unranked). On update cadence, ads, in-app purchases and monetization model there is nothing between them.

Grandpa In Space costs $2.99 and Tower Math® $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Grandpa In Space holds the better App Store score, 4.8 against 4.1. Both are backed by a comparable volume of ratings — 12 and 44 respectively. Written reviews complicate that: 60% of Grandpa In Space's written reviews are positive against 74% of Tower Math®'s, so the app with the better star average is not the one people write more warmly about.

Grandpa In Space ships an update every 3 months, Tower Math® every 5 months. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Grandpa In Space | Tower Math® |
| --- | --- | --- |
| Price | $2.99 | **$1.99** |
| Rating | **[4.8 (12 ratings)](https://appshunter.io/ios/app/grandpa-in-space/id705904963/reviews)** | [4.1 (44 ratings)](https://appshunter.io/ios/app/tower-math/id858919286/reviews) |
| Number of ratings | 12 | **44** |
| Positive reviews | 60.0% of reviews | **73.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 5 months |
| Monetization | Paid | Paid |
| Best chart rank | — | **#192** |
| Size | 106 MB | 175 MB |
| Requires iOS | 15.0 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Fairlady Media](https://appshunter.io/developer/298297614) | [Freecloud Design, Inc.](https://appshunter.io/developer/324355664) |

## What reviewers say

### Grandpa In Space

[App page](https://appshunter.io/ios/app/grandpa-in-space/id705904963)

Embark on a cosmic adventure with Grandpa and his alien friends! Explore the solar system through 10 engaging mini-games and 18 educational videos. This app makes learning about space, math, and literacy fun for young children.

**Highlights:** 10 educational mini-games, 18 narrated space videos, Solar system facts, Math and literacy skills, Sorting and categorization games, Customizable mini-game selection

**Features:** macOS Compatibility

**In-app purchases:** none


### Tower Math®

[App page](https://appshunter.io/ios/app/tower-math/id858919286)

**Currently charting:** #192 Top Paid · Education (US App Store)

Practice arithmetic through an engaging 3D tower defense game. Solve math problems to build magic towers, free captured numbers, and earn special powers. Track progress and earn medals with multiple player profiles.

**Highlights:** Arithmetic practice (addition, subtraction, multiplication, division), Tower defense gameplay, 3D graphics, Multiple player profiles, Medal system for level completion, Special power-ups

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Grandpa In Space free?

Grandpa In Space costs $2.99, with no in-app purchases.

### Is Tower Math® free?

Tower Math® costs $1.99, with no in-app purchases.

### Which has better reviews, Grandpa In Space or Tower Math®?

Grandpa In Space is rated higher. Grandpa In Space averages 4.8 out of 5 from 12 ratings, while Tower Math® averages 4.1 from 44 ratings.

### Do Grandpa In Space or Tower Math® have ads?

Neither Grandpa In Space nor Tower Math® shows ads.

### Which is updated more often, Grandpa In Space or Tower Math®?

Grandpa In Space ships an update every 3 months, and Tower Math® every 5 months. Most recently, Grandpa In Space was updated on November 1, 2026 and Tower Math® 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.*