# Schulte Grid vs Otso

The clearest difference is price: Schulte Grid at Free against Otso's $0.99. Schulte Grid also leads on iOS requirement (16.0 vs 18.0). Otso's advantage is in-app purchases (none vs 1) and ads (none vs shown). On update cadence there is nothing between them.

Schulte Grid is free to download; Otso costs $0.99 up front. Schulte Grid sells 1 one-off in-app purchase. Otso asks for nothing beyond the download.

Schulte Grid ships an update every 5 weeks, Otso every 3 weeks. The most recent releases landed on October 1, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Schulte Grid | Otso |
| --- | --- | --- |
| Price | **Free** | $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 | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Monetization | — | Paid |
| Size | 6 MB | 5 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [景珂 陈](https://appshunter.io/developer/620312170) | [SIMON HEUSCHKEL](https://appshunter.io/developer/1863285023) |

## What reviewers say

### Schulte Grid

[App page](https://appshunter.io/ios/app/schulte-grid-focus-training/id777206931)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $1.99 | one-time |


### 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 Schulte Grid free?

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

### Is Otso free?

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

### Do Schulte Grid or Otso have ads?

Schulte Grid shows ads; Otso does not.

### Which is updated more often, Schulte Grid or Otso?

Schulte Grid ships an update every 5 weeks, and Otso every 3 weeks. Most recently, Schulte Grid was updated on October 1, 2026 and Otso on October 11, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*