# Fourth Grade Math Games Kids vs Otso

The clearest difference is update cadence: Otso at every 3 weeks against Fourth Grade Math Games Kids's every 12 months. Fourth Grade Math Games Kids's advantage is iOS requirement (11.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Fourth Grade Math Games Kids costs $0.99 and Otso $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Fourth Grade Math Games Kids ships an update every 12 months, Otso every 3 weeks. The most recent releases landed on October 4, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Fourth Grade Math Games Kids | Otso |
| --- | --- | --- |
| Price | $0.99 | $0.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/otso-visual-timer/id6778631652/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 3 weeks** |
| Monetization | — | Paid |
| Size | 12 MB | 5 MB |
| Requires iOS | **11.0** | 18.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Maria Dolores Garcia Ferre](https://appshunter.io/developer/970100146) | [SIMON HEUSCHKEL](https://appshunter.io/developer/1863285023) |

## What reviewers say

### Fourth Grade Math Games Kids

[App page](https://appshunter.io/ios/app/fourth-grade-math-games-kids/id1490083806)

**Features:** macOS Compatibility

**In-app purchases:** none


### Otso

[App page](https://appshunter.io/ios/app/otso-visual-timer/id6778631652)

This app provides a visual countdown timer that uses a shrinking colored wedge instead of numbers. It offers various aesthetic designs and tactile feedback, making time management intuitive for all ages. The app is designed for privacy with no accounts or data collection.

**Highlights:** Visual countdown wedge, Customizable faces and sounds, Dynamic Island and Lock Screen integration, No ads or subscriptions, Private by design, Tactile feedback and animations

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Fourth Grade Math Games Kids free?

Fourth Grade Math Games Kids costs $0.99, with no in-app purchases.

### Is Otso free?

Otso costs $0.99, with no in-app purchases.

### Do Fourth Grade Math Games Kids or Otso have ads?

Neither Fourth Grade Math Games Kids nor Otso shows ads.

### Which is updated more often, Fourth Grade Math Games Kids or Otso?

Fourth Grade Math Games Kids ships an update every 12 months, and Otso every 3 weeks. Most recently, Fourth Grade Math Games Kids was updated on October 4, 2026 and Otso on October 11, 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.*