Number Builder vs whopack
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Calculates all possible solutions
- Supports basic arithmetic
- Includes powers and roots
- Input dice rolls and target number
- Useful for Number Knockout game
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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.
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.
- 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
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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
Verdict
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
Both are free to download. Number Builder sells 1 one-off in-app purchase. whopack asks for nothing beyond the download.
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.
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.
| Parameter | Number Builder | whopack |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (7 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 80.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 7 — better | 2 |
| Update frequency | Every 39 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 4 MB | 45 MB |
| Age rating | 4+ | 17+ |
| Developer | Widgetilities LLC | FiLo LLC |
Customer experience
Number Builder
whopack
In-app purchases
Number Builder
- Unlock Challenge Mode$1.99
whopack
No in-app purchases









