# Number Builder vs Celeste Learns

The clearest difference is monetization model: Number Builder at free against Celeste Learns's subscription. Number Builder also leads on ratings volume (7 vs 2). Celeste Learns's advantage is update cadence (weekly vs every 39 months) and iOS requirement (15.1 vs 17.0). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Number Builder sells 1 one-off in-app purchase and Celeste Learns sells 1 in-app purchase, starting at $14.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.9 for Number Builder against 5.0 for Celeste Learns. Both are backed by a comparable volume of ratings — 7 and 2 respectively.

Number Builder ships an update every 39 months, Celeste Learns weekly. The most recent releases landed on September 16, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Number Builder | Celeste Learns |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (7 ratings)](https://appshunter.io/ios/app/number-builder-puzzle-solver/id1489526164/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/celeste-learns/id6760625939/reviews)** |
| Number of ratings | **7** | 2 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 39 months | **Weekly** |
| Monetization | **Free** | Subscription |
| Size | 4 MB | 36 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Widgetilities LLC](https://appshunter.io/developer/1373578566) | [Celeste Learns](https://appshunter.io/developer/1885389258) |

## What reviewers say

### Number Builder

[App page](https://appshunter.io/ios/app/number-builder-puzzle-solver/id1489526164)

This app helps solve math puzzles by calculating all possible equations from dice rolls and a target number. It supports basic arithmetic, powers, and roots, making it a useful tool for games like Number Knockout.

**Highlights:** Calculates all possible solutions, Supports basic arithmetic, Includes powers and roots, Input dice rolls and target number, Useful for Number Knockout game

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Challenge Mode | $1.99 | one-time |


### Celeste Learns

[App page](https://appshunter.io/ios/app/celeste-learns/id6760625939)

This app offers a calm, daily video-based approach to teaching early reading skills to young children. It focuses on letter sounds, blending, and word recognition through a structured 30-day lesson plan. Designed for babies to age 5, it aims to build reading confidence without overstimulation.

**Highlights:** Daily video lessons, Letter sound association, Blending sounds into words, Word recognition, Reading confidence building, Calm, distraction-free learning

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Celeste Learns | $14.99 | per month |


## Frequently asked questions

### Is Number Builder free?

Number Builder is free to download, with in-app purchases available.

### Is Celeste Learns free?

Celeste Learns is free to download, with in-app purchases available.

### Which has better reviews, Number Builder or Celeste Learns?

Celeste Learns is rated higher. Number Builder averages 4.9 out of 5 from 7 ratings, while Celeste Learns averages 5.0 from 2 ratings.

### Do Number Builder or Celeste Learns have ads?

Neither Number Builder nor Celeste Learns shows ads.

### Which is updated more often, Number Builder or Celeste Learns?

Number Builder ships an update every 39 months, and Celeste Learns weekly. Most recently, Number Builder was updated on September 16, 2026 and Celeste Learns on September 14, 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.*