# Guido vs Otso

The clearest difference is review sentiment: Otso at 100% against Guido's 56%. Otso also leads on rating (5.0 vs 2.8) and price ($0.99 vs $1.99). Guido's advantage is ratings volume (4 vs 1) and iOS requirement (11.0 vs 18.0). On update cadence, ads, in-app purchases and monetization model there is nothing between them.

Guido costs $1.99 and Otso $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Otso holds the better App Store score, 5.0 against 2.8. Both are backed by a comparable volume of ratings — 4 and 1 respectively. Written reviews point the same way: 56% of Guido's written reviews are positive against 100% of Otso's.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 1, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Guido | Otso |
| --- | --- | --- |
| Price | $1.99 | **$0.99** |
| Rating | [2.8 (4 ratings)](https://appshunter.io/ios/app/guido-learn-to-read-notes/id1437751582/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/otso-visual-timer/id6778631652/reviews)** |
| Number of ratings | **4** | 1 |
| Positive reviews | 55.6% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Paid | Paid |
| Size | 82 MB | 5 MB |
| Requires iOS | **11.0** | 18.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Yannis RICHARD](https://appshunter.io/developer/1126546871) | [SIMON HEUSCHKEL](https://appshunter.io/developer/1863285023) |

## What reviewers say

### Guido

[App page](https://appshunter.io/ios/app/guido-learn-to-read-notes/id1437751582)

Learn to read music notes step by step with this interactive application. It gradually unlocks new notes as you master them, tracks your progress with an experience system, and offers motivational features like daily goals and unlockable successes. Practice by playing notes on your piano, with the app listening via your device's microphone.

**Highlights:** Step-by-step note learning, Progress tracking with experience system, Daily goal setting and achievements, Adaptive difficulty, Piano note recognition via microphone, Focus on weak notes

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

**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 Guido free?

Guido costs $1.99, with no in-app purchases.

### Is Otso free?

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

### Which has better reviews, Guido or Otso?

Otso is rated higher. Guido averages 2.8 out of 5 from 4 ratings, while Otso averages 5.0 from 1 ratings.

### Do Guido or Otso have ads?

Neither Guido nor Otso shows ads.

### Which is updated more often, Guido or Otso?

Guido ships an update every 3 weeks, and Otso every 3 weeks. Most recently, Guido was updated on October 1, 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.*