Comparison

Number Builder vs Celeste Learns

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Number Builder

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
Read full description

Number Builder turns dice rolls into a hands-on way to practice mental math. SOLVE MODE Roll three dice, enter a target number, and see every way to combine your dice — using addition, subtraction, multiplication, division, exponents, and roots — to reach it. Great for checking your own work or discovering paths you hadn't thought of. CHALLENGE MODE Roll a set of dice and a target, then build the answer yourself — tapping dice and operators into place, left to right, with instant feedback when you're right. Six levels of difficulty take you from simple addition all the way up to exponents, fractional exponents, and roots, with targets up to 1,000. Challenge mode includes 3 free puzzles to try. After that, it unlocks with a single one-time purchase — no subscriptions, and Family Sharing means one purchase covers your whole family. BUILT FOR PRACTICE Six progressively harder levels, each changing exactly one thing about the challenge Customizable dice colors and styles Full support for larger text sizes and VoiceOver Solve mode stays completely free, no purchase required No data is collected. No ads, ever.

About

Celeste Learns

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
Read full description

Help your child learn to read with one calm video at a time. Have you ever worried you’re not doing enough to teach your child to read? It’s hard to know where to start, and it can feel frustrating when you try. You’re doing your best and we understand. That’s exactly why we created Celeste Learns: a simple, effective way to teach early reading. Download it today and press play once a day, so you can feel confident your child is on the path to reading success. Instead of fast-paced apps that are designed more for entertainment than learning, we focus on one daily habit that builds real progress. HOW IT WORKS • Start with Video 1 • Have your child watch it once a day for 30 days • Unlock the next lesson and continue WHAT YOUR CHILD LEARNS • Letter sounds through simple visual association • Blending sounds into words • Word recognition and early reading confidence WHY PARENTS LOVE IT • No overstimulation or distractions • No guessing what to do next • A calm, consistent routine that works Designed for babies to age 5. One video a day. A lifetime of learning. Subscription Information: • Celeste Learns Monthly Subscription: $14.99/month • Includes access to a 9-lesson reading program, with one new video unlocking every 30 days; all previously unlocked videos remain available as long as your subscription is active • Payment will be charged to your Apple ID account at confirmation of purchase • Subscription automatically renews unless canceled at least 24 hours before the end of the current period • You can manage or cancel your subscription in your App Store account settings Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://celestelearns.com/pages/privacy-policy

Screenshots

Number Builder4 screens
Celeste Learns4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 6 level
Number Builder versus Celeste Learns: the parameters behind the verdict, then further details
ParameterNumber BuilderCeleste Learns
PriceFreeFree
Rating4.9 (7 ratings)5.0 (2 ratings) — better
Positive reviews100.0% of reviews—
Number of ratings7 — better2
Update frequencyEvery 39 monthsWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree — betterSubscription
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.1 — better
Further details — not scored
Size4 MB36 MB
Age rating4+4+
DeveloperWidgetilities LLCCeleste Learns

Customer experience

Number Builder

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Celeste Learns

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Number Builder

One-time1
  • Unlock Challenge Mode$1.99
1 purchases

Celeste Learns

Subscriptions1
  • Celeste Learns$14.991 Month

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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