Comparison

Number Builder vs whopack

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

whopack

Connect with local homeschooling families to organize and attend in-person meetups and events. Facilitate group communication, plan activities, and manage group logistics seamlessly.

Highlights
  • Find local homeschool groups
  • Organize and discover events
  • Group chat and direct messaging
  • Create polls for decision making
  • Store membership cards
  • Share documents and photos
Features
Read full description

Homeschooling works better with other people in the room. whopack is where homeschool families find each other and actually meet up — events worth showing up to, groups worth joining, and the everyday logistics that make both happen. FIND YOUR PEOPLE Browse events and homeschool groups near you. Join a Pack — a group of families who meet up regularly — or start your own and bring others in. PLAN THINGS THAT HAPPEN Post an event in a few taps. See who's coming and how many are in their party. Field trips, park days, co-op sessions, game nights, the lot. KEEP EVERYONE IN THE LOOP Group chat and direct messages. Announcements that get read. Polls when the group needs to pick a date. Shared documents and photo galleries so nobody's digging through a text thread from March. CARRY YOUR MEMBERSHIPS Keep your museum, zoo, and library membership cards in one place, scannable at the gate. WHAT YOU WON'T FIND No engagement algorithm. No feed engineered to keep you scrolling. We don't sell your data, and we don't profile you to sell you anything. You're here to get off the screen and into the same room as real people — the app should help with that and then get out of the way. whopack is free.

Screenshots

Number Builder4 screens
whopack2 screens

Verdict

The call

The clearest difference is in-app purchases: whopack at none against Number Builder's 1. whopack also leads on update cadence (every 3 days vs every 39 months) and review sentiment (100% vs 80%). Number Builder's advantage is ratings volume (7 vs 2). On price, rating, ads and monetization model 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. whopack asks for nothing beyond the download.

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 whopack. Both are backed by a comparable volume of ratings — 7 and 2 respectively. Written reviews are what separate them: 80% of Number Builder's written reviews are positive against 100% of whopack's.

UpkeepUpdate frequency

Number Builder ships an update every 39 months, whopack every 3 days. The most recent releases landed on October 10, 2026 and October 16, 2026 respectively.

Scorecard5 real differences · 5 level
Number Builder versus whopack: the parameters behind the verdict, then further details
ParameterNumber Builderwhopack
PriceFreeFree
Rating4.9 (7 ratings)5.0 (2 ratings) — better
Positive reviews80.0% of reviews100.0% of reviews — better
Number of ratings7 — better2
Update frequencyEvery 39 monthsEvery 3 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.015.1 — better
Further details — not scored
Size4 MB45 MB
Age rating4+17+
DeveloperWidgetilities LLCFiLo LLC

Customer experience

Number Builder

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive80.0%
Neutral20.0%
Negative0.0%

whopack

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Number Builder

One-time1
  • Unlock Challenge Mode$1.99
None

whopack

No in-app purchases

Questions

Is Number Builder free?
Number Builder is free to download, with in-app purchases available.
Is whopack free?
whopack is free to download, with no in-app purchases.
Which has better reviews, Number Builder or whopack?
whopack is rated higher. Number Builder averages 4.9 out of 5 from 7 ratings, while whopack averages 5.0 from 2 ratings.
Do Number Builder or whopack have ads?
Neither Number Builder nor whopack shows ads.
Which is updated more often, Number Builder or whopack?
Number Builder ships an update every 39 months, and whopack every 3 days. Most recently, Number Builder was updated on October 10, 2026 and whopack on October 16, 2026.

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