# Add Sub K vs Bitsboard Flashcards & Games

The clearest difference is rating: Bitsboard Flashcards & Games at 4.4 against Add Sub K's 3.0. Bitsboard Flashcards & Games also leads on update cadence (every 3 weeks vs every 10 months) and ratings volume (1K vs 1). Add Sub K's advantage is in-app purchases (none vs 10) and review sentiment (100% vs 81%). On price and ads there is nothing between them.

Both are free to download. Bitsboard Flashcards & Games sells 10 in-app purchases, starting at $4.99 per month. Add Sub K asks for nothing beyond the download.

Bitsboard Flashcards & Games holds the better App Store score, 4.4 against 3.0. That said, the two scores are not equally well evidenced: Bitsboard Flashcards & Games has 1K ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 100% of Add Sub K's written reviews are positive against 81% of Bitsboard Flashcards & Games's, so the app with the better star average is not the one people write more warmly about.

Add Sub K ships an update every 10 months, Bitsboard Flashcards & Games every 3 weeks. The most recent releases landed on September 30, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Add Sub K | Bitsboard Flashcards & Games |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (1 ratings)](https://appshunter.io/ios/app/add-sub-k-1/id486199509/reviews) | **[4.4 (1K ratings)](https://appshunter.io/ios/app/bitsboard-flashcards-and-games/id516842210/reviews)** |
| Number of ratings | 1 | **1K** |
| Positive reviews | **100.0% of reviews** | 81.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 35 MB | 136 MB |
| Requires iOS | **10.0** | 14.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Classroom Focused Software](https://appshunter.io/developer/406741679) | [Happy Moose Apps](https://appshunter.io/developer/1356705255) |

## What reviewers say

### Add Sub K

[App page](https://appshunter.io/ios/app/add-sub-k-1/id486199509)

This app helps young learners practice addition and subtraction skills. It offers customizable problem sets and visual aids like counters and 10-frames to support understanding.

**Highlights:** Addition facts up to 10, Subtraction facts up to 20, Customizable addends, Vertical or horizontal problems, Visual aids (objects, counters, 10-frame), Marker board for solving

**Features:** macOS Compatibility

**In-app purchases:** none


### Bitsboard Flashcards & Games

[App page](https://appshunter.io/ios/app/bitsboard-flashcards-and-games/id516842210)

This app makes learning fun and effective with over 35 interactive educational games and activities. Create custom lessons, track progress, and sync content across devices. It's designed for students and educators to master subjects like languages, spelling, and reading through engaging gameplay.

**Highlights:** 35+ educational games and study modes, Create custom lessons with images and audio, Multiplayer and single-player mini-games, Progress tracking and detailed reports, Cross-device content syncing, Private classroom feature, Accessibility options including switch control

**Features:** macOS Compatibility, Siri integration, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Subscription | $4.99 | per month |
| Unlock All Subscription | $29.99 | per year |
| Image Search Upgrade | $0.99 | one-time |
| Add Unlimited Users | $3.99 | one-time |
| Unlock All Premium Classes | $14.99 | one-time |
| Unlock All Features | $14.99 | one-time |
| Unlock All Games | $19.99 | one-time |
| Unlock Everything | $24.99 | one-time |
| Unlock Everything | $47.99 | one-time |
| Bitsboard Superpowers License (Unlocks ALL premium features) | $49.99 | one-time |

**What reviewers like**

- 🚀 Versatile and customizable
- 👍 Engaging and fun for kids
- 🎓 Excellent for speech therapy and language learning
- 💡 Ability to create personalized boards
- 🔍 Extensive library of shared boards

**What reviewers complain about**

- 🐛 Frequent crashes and glitches
- 🕰️ Slow and sluggish performance
- 🔒 Issues with accessing/managing subscriptions
- 💤 Boards and settings disappearing or reverting
- 🙅‍♀️ Poor customer support and communication

**Reported bugs**

- Tracing game not working properly
- Audio not playing correctly in some games
- Inconsistent login and access issues
- Boards and settings randomly disappearing

**Requested features**

- Ability to arrange games in a specific order
- Option to import audio files instead of recording
- Support for multiple fonts, including IPA
- Easier board editing and navigation
- Improved organization and folder support for boards


## Frequently asked questions

### Is Add Sub K free?

Add Sub K is free to download, with no in-app purchases.

### Is Bitsboard Flashcards & Games free?

Bitsboard Flashcards & Games is free to download, with in-app purchases available.

### Which has better reviews, Add Sub K or Bitsboard Flashcards & Games?

Bitsboard Flashcards & Games is rated higher. Add Sub K averages 3.0 out of 5 from 1 ratings, while Bitsboard Flashcards & Games averages 4.4 from 1K ratings.

### Do Add Sub K or Bitsboard Flashcards & Games have ads?

Neither Add Sub K nor Bitsboard Flashcards & Games shows ads.

### Which is updated more often, Add Sub K or Bitsboard Flashcards & Games?

Add Sub K ships an update every 10 months, and Bitsboard Flashcards & Games every 3 weeks. Most recently, Add Sub K was updated on September 30, 2026 and Bitsboard Flashcards & Games on October 21, 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.*