# 3D LEARNING CARD BUGS vs TraceSheet

The clearest difference is in-app purchases: 3D LEARNING CARD BUGS at none against TraceSheet's 1. 3D LEARNING CARD BUGS also leads on iOS requirement (5.1.1 vs 15.5). TraceSheet's advantage is update cadence (every 3 days vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. TraceSheet sells 1 one-off in-app purchase. 3D LEARNING CARD BUGS asks for nothing beyond the download.

3D LEARNING CARD BUGS ships an update every 3 months, TraceSheet every 3 days. The most recent releases landed on October 11, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | 3D LEARNING CARD BUGS | TraceSheet |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 days** |
| Size | 190 MB | 80 MB |
| Requires iOS | **5.1.1** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alzzam Education Corp.](https://appshunter.io/developer/868032382) | [lei cao](https://appshunter.io/developer/1448332242) |

## What reviewers say

### 3D LEARNING CARD BUGS

[App page](https://appshunter.io/ios/app/3d-learning-card-bugs/id1092463195)

**Features:** macOS Compatibility

**In-app purchases:** none


### TraceSheet

[App page](https://appshunter.io/ios/app/tracesheet-chinese-worksheets/id6816287607)

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TraceSheet Pro | $14.99 | one-time |


## Frequently asked questions

### Is 3D LEARNING CARD BUGS free?

3D LEARNING CARD BUGS is free to download, with no in-app purchases.

### Is TraceSheet free?

TraceSheet is free to download, with in-app purchases available.

### Do 3D LEARNING CARD BUGS or TraceSheet have ads?

Neither 3D LEARNING CARD BUGS nor TraceSheet shows ads.

### Which is updated more often, 3D LEARNING CARD BUGS or TraceSheet?

3D LEARNING CARD BUGS ships an update every 3 months, and TraceSheet every 3 days. Most recently, 3D LEARNING CARD BUGS was updated on October 11, 2026 and TraceSheet on October 8, 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.*