# Sumdog vs LINGR App

The clearest difference is in-app purchases: LINGR App at none against Sumdog's 1. LINGR App also leads on update cadence (every 3 weeks vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

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

Sumdog ships an update every 2 months, LINGR App every 3 weeks. The most recent releases landed on October 20, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Sumdog | LINGR App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (1.6K ratings)](https://appshunter.io/ios/app/sumdog/id1145809959/reviews)** | — |
| Number of ratings | **1.6K** | — |
| Positive reviews | 63.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 134 MB | 32 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sumdog Ltd.](https://appshunter.io/developer/644331332) | [ABIDING FAITH BIBLE CHURCH](https://appshunter.io/developer/1713275901) |

## 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


### LINGR App

[App page](https://appshunter.io/ios/app/lingr-app/id6761085874)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sumdog free?

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

### Is LINGR App free?

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

### Do Sumdog or LINGR App have ads?

Neither Sumdog nor LINGR App shows ads.

### Which is updated more often, Sumdog or LINGR App?

Sumdog ships an update every 2 months, and LINGR App every 3 weeks. Most recently, Sumdog was updated on October 20, 2026 and LINGR App on October 1, 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.*