# ABC Simple Letters vs Water Rocket Fun

The clearest difference is review sentiment: Water Rocket Fun at 100% against ABC Simple Letters's 43%. Water Rocket Fun also leads on price (Free vs $1.99) and rating (5.0 vs 1.0). ABC Simple Letters's advantage is update cadence (every 5 months vs every 21 months) and device support (3 vs 1). On ratings volume, ads and in-app purchases there is nothing between them.

Water Rocket Fun is free to download; ABC Simple Letters costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Water Rocket Fun holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews point the same way: 43% of ABC Simple Letters's written reviews are positive against 100% of Water Rocket Fun's.

ABC Simple Letters ships an update every 5 months, Water Rocket Fun every 21 months. The most recent releases landed on September 18, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | ABC Simple Letters | Water Rocket Fun |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/abc-simple-letters/id385467858/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/water-rocket-fun/id1639808978/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 42.9% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 21 months |
| Monetization | Paid | **Free** |
| Size | 28 MB | 19 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [CROMBEZ Emmanuel](https://appshunter.io/developer/375656695) | [Seeds Software](https://appshunter.io/developer/507836260) |

## What reviewers say

### ABC Simple Letters

[App page](https://appshunter.io/ios/app/abc-simple-letters/id385467858)

This app helps young children develop handwriting skills by teaching them to draw letters with their fingers. It provides recognition for correct letter formation to encourage progress and is also used by teachers for children facing handwriting challenges.

**Highlights:** Finger tracing letter practice, Letter recognition for encouragement, Develops handwriting skills, Aids children with handwriting challenges, Supports early learning stages

**In-app purchases:** none


### Water Rocket Fun

[App page](https://appshunter.io/ios/app/water-rocket-fun/id1639808978)

Explore the physics of water rockets and optimize launch parameters for maximum altitude. This simulator uses advanced fluid mechanics and thermodynamics for accurate predictions, with a user-friendly interface for students and enthusiasts.

**Highlights:** Physics simulation, Launch optimization, Accurate apogee predictions, User-friendly interface, Rocket design aids, Launcher blueprints, Altitude calculator

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ABC Simple Letters free?

ABC Simple Letters costs $1.99, with no in-app purchases.

### Is Water Rocket Fun free?

Water Rocket Fun is free to download, with no in-app purchases.

### Which has better reviews, ABC Simple Letters or Water Rocket Fun?

Water Rocket Fun is rated higher. ABC Simple Letters averages 1.0 out of 5 from 1 ratings, while Water Rocket Fun averages 5.0 from 1 ratings.

### Do ABC Simple Letters or Water Rocket Fun have ads?

Neither ABC Simple Letters nor Water Rocket Fun shows ads.

### Which is updated more often, ABC Simple Letters or Water Rocket Fun?

ABC Simple Letters ships an update every 5 months, and Water Rocket Fun every 21 months. Most recently, ABC Simple Letters was updated on September 18, 2026 and Water Rocket Fun on September 10, 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.*