# 29 Card Master vs Card Adder 21

The clearest difference is in-app purchases: 29 Card Master at none against Card Adder 21's 1. Card Adder 21's advantage is ads (none vs shown) and update cadence (every 5 days vs every 11 days). On price and device support there is nothing between them.

Both are free to download. Card Adder 21 sells 1 one-off in-app purchase. 29 Card Master asks for nothing beyond the download.

29 Card Master ships an update every 11 days, Card Adder 21 every 5 days. The most recent releases landed on October 27, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | 29 Card Master | Card Adder 21 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/card-adder-21/id6748666396/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 11 days | **Every 5 days** |
| Monetization | — | Free |
| Size | 108 MB | 79 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dipayon Debnath Dip](https://appshunter.io/developer/1566993708) | [Dot Business Integrated Solutions](https://appshunter.io/developer/1808206089) |

## What reviewers say

### 29 Card Master

[App page](https://appshunter.io/ios/app/29-card-master/id1672726543)

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

**In-app purchases:** none


### Card Adder 21

[App page](https://appshunter.io/ios/app/card-adder-21/id6748666396)

Enhance your mental math skills by tracking a running total as cards are dealt. Progress through increasingly challenging levels with a timed element. The game offers progress tracking and is designed to make counting enjoyable.

**Highlights:** Progressive difficulty levels, Timed challenges, Running total tracking, Progress tracking, Card dealing gameplay

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Card Adder 21 Pro Lifetime | $4.99 | one-time |


## Frequently asked questions

### Is 29 Card Master free?

29 Card Master is free to download, with no in-app purchases.

### Is Card Adder 21 free?

Card Adder 21 is free to download, with in-app purchases available.

### Do 29 Card Master or Card Adder 21 have ads?

29 Card Master shows ads; Card Adder 21 does not.

### Which is updated more often, 29 Card Master or Card Adder 21?

29 Card Master ships an update every 11 days, and Card Adder 21 every 5 days. Most recently, 29 Card Master was updated on October 27, 2026 and Card Adder 21 on October 9, 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.*