NumberSlam® vs IEW Writing Toolbox
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NumberSlam®
This is a fast-paced mental math game designed to enhance your calculation skills on mobile. It's a digital adaptation of a popular classroom game, offering an engaging way to practice math for fun or improvement. The game is ad-free and tracks no user data for a safe, distraction-free experience.
- Improves mental math skills
- Engaging and fast-paced gameplay
- Digital remake of a popular classroom game
- Ad-free experience
- Tracking-free for user privacy
- Suitable for practice or fun
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Finally, an engaging, exciting, and fast-paced mental math skills game. NumberSlam® was created to improve your mental math skills on a mobile device. NumberSlam® is a digital remake of the popular math game “Board Slam” played in Classical Conversations Communities’ classrooms around the world. Whether playing for fun or practice, NumberSlam® is THE mental math game for you. Perfect for CC students, their parents or anyone that enjoys a good mental math challenge. NumberSlam® is Ad-Free & tracking-free so that your game-play is safe and free from distractions. We hope you like it, now Get Slamming!
IEW Writing Toolbox
Enhance writing with structural models and stylistic techniques. Features a focused thesaurus to find descriptive words and improve compositions. Offers a convenient, all-in-one resource for students and teachers.
- IEW structural models
- Stylistic techniques explained
- Focused thesaurus
- Search for adverbs, verbs, adjectives
- Enhance composition
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IEW Writing Toolbox app is the perfect tool for IEW students and teachers! It includes the IEW structural models and stylistic techniques, clearly explained and easy to apply. The search for a word features a focused thesaurus, helping you find -ly adverbs, strong verbs, and quality adjectives to enhance any composition. This toolbox contains everything writers need to write with structure and style—all in one convenient app.
Screenshots
Verdict
The clearest difference is price: NumberSlam® at Free against IEW Writing Toolbox's $1.99. NumberSlam® also leads on update cadence (every 6 days vs every 5 weeks) and ratings volume (8 vs 2). IEW Writing Toolbox's advantage is in-app purchases (none vs 1) and rating (5.0 vs 4.8). On review sentiment, ads, device support and iOS requirement 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
NumberSlam® is free to download; IEW Writing Toolbox costs $1.99 up front. NumberSlam® sells 1 one-off in-app purchase. IEW Writing Toolbox asks for nothing beyond the download.
IEW Writing Toolbox holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 8 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
NumberSlam® ships an update every 6 days, IEW Writing Toolbox every 5 weeks. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.
| Parameter | NumberSlam® | IEW Writing Toolbox |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.8 (8 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 8 — better | 2 |
| Update frequency | Every 6 days — better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free — better | Paid |
| Best chart rank | — | #159 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 31 MB | 53 MB |
| Age rating | 4+ | 4+ |
| Developer | PIRUX, LLC | Institute for Excellence in Writing |
Customer experience
NumberSlam®
IEW Writing Toolbox
In-app purchases
NumberSlam®
- Activate NumberSlam$7.99
IEW Writing Toolbox
No in-app purchases
Questions
Is NumberSlam® free?
Is IEW Writing Toolbox free?
Which has better reviews, NumberSlam® or IEW Writing Toolbox?
Do NumberSlam® or IEW Writing Toolbox have ads?
Which is updated more often, NumberSlam® or IEW Writing Toolbox?
Other comparisons
