# Sumdog vs ColumnAddSub

The clearest difference is in-app purchases: ColumnAddSub at none against Sumdog's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Sumdog sells 1 in-app purchase, starting at $8.99 per month. ColumnAddSub asks for nothing beyond the download.

Sumdog ships an update every 2 months, ColumnAddSub monthly. The most recent releases landed on September 25, 2026 and May 22, 2026 respectively.

## The numbers

| Metric | Sumdog | ColumnAddSub |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (1.6K ratings)](https://appshunter.io/ios/app/sumdog/id1145809959/reviews)** | — |
| Number of ratings | **1.6K** | — |
| Positive reviews | 64.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free with in-app purchases | — |
| Size | 134 MB | 1 MB |
| Requires iOS | **15.0** | 16.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sumdog Ltd.](https://appshunter.io/developer/644331332) | [PETER JAMES SIDES](https://appshunter.io/developer/1619752154) |

## What reviewers say

### Sumdog

[App page](https://appshunter.io/ios/app/sumdog/id1145809959)

This app offers personalized math and spelling practice for children aged 5-14 through engaging games and adaptive learning. It uses diagnostic tests to tailor learning journeys and provides virtual rewards to motivate students. Parents can set up accounts for home use or connect to school-assigned work.

**Highlights:** Personalized adaptive learning, Engaging single and multiplayer games, Thousands of standards-aligned questions, Virtual coin rewards system, 3D avatar and house personalization, Diagnostic assessment

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Family Membership | $8.99 | per month |

**What reviewers like**

- 🎮 Fun and engaging games
- 🏆 Competitive leaderboards
- 🏠 Customizable avatar and house
- 📚 Helps with learning math, spelling, and grammar
- 🏫 Useful for schools and teachers

**What reviewers complain about**

- 🐛 Glitches and bugs
- 🕰️ Slow loading times
- 🔒 Limited access to premium features without subscription
- 🤖 Weird or unappealing 3D character models
- 🔍 Lack of instructions for some games

**Reported bugs**

- Flower Defenders game not working properly
- Goalz game not registering shots correctly
- Sudden logout issues
- Incompatibility with certain devices or browsers

**Requested features**

- Add more free games
- Bring back old 2D games
- Allow interaction with house and garden items
- Improve multiplayer functionality
- Add more customization options for avatar and house


### ColumnAddSub

[App page](https://appshunter.io/ios/app/columnaddsub/id6463636415)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sumdog free?

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

### Is ColumnAddSub free?

ColumnAddSub is free to download, with no in-app purchases.

### Do Sumdog or ColumnAddSub have ads?

Neither Sumdog nor ColumnAddSub shows ads.

### Which is updated more often, Sumdog or ColumnAddSub?

Sumdog ships an update every 2 months, and ColumnAddSub monthly. Most recently, Sumdog was updated on September 25, 2026 and ColumnAddSub on May 22, 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.*