# C2 Simon Task vs Los OSOs

The clearest difference is in-app purchases: C2 Simon Task at none against Los OSOs's 2. Los OSOs's advantage is update cadence (every 6 days vs every 11 months) and price ($2.99 vs $3.99). On ads, device support and iOS requirement there is nothing between them.

C2 Simon Task costs $3.99 and Los OSOs $2.99 up front. Los OSOs sells 2 in-app purchases, starting at $9.99 per month. C2 Simon Task asks for nothing beyond the download.

C2 Simon Task ships an update every 11 months, Los OSOs every 6 days. The most recent releases landed on September 24, 2026 and July 5, 2026 respectively.

## The numbers

| Metric | C2 Simon Task | Los OSOs |
| --- | --- | --- |
| Price | $3.99 | **$2.99** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 6 days** |
| Monetization | — | Paid |
| Size | 1 MB | 282 MB |
| Requires iOS | **15.6** | 16.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 17+ |
| Developer | [Yasuyoshi Ota](https://appshunter.io/developer/1500357652) | [Nectelier Inc.](https://appshunter.io/developer/1481311829) |

## What reviewers say

### C2 Simon Task

[App page](https://appshunter.io/ios/app/c2-simon-task/id1635017276)

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

**In-app purchases:** none


### Los OSOs

[App page](https://appshunter.io/ios/app/los-osos/id1672750235)

This app helps you understand and express your emotions through a unique, non-verbal system. Record and share your sentiment over time to improve self-awareness, leadership, and teamwork. Designed with an elegant and intuitive interface.

**Highlights:** Non-verbal sentiment recording, 3D emotion tracking (Happiness, Energy, Assuredness), Sentiment sharing for teamwork, Elegant and intuitive design, Personal sentiment review over time, Proprietary OSO-Pearl technology

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Los OSO Monthly | $9.99 | per month |
| Los OSO Yearly | $83.00 | per year |


## Frequently asked questions

### Is C2 Simon Task free?

C2 Simon Task costs $3.99, with no in-app purchases.

### Is Los OSOs free?

Los OSOs costs $2.99, and also offers in-app purchases.

### Do C2 Simon Task or Los OSOs have ads?

Neither C2 Simon Task nor Los OSOs shows ads.

### Which is updated more often, C2 Simon Task or Los OSOs?

C2 Simon Task ships an update every 11 months, and Los OSOs every 6 days. Most recently, C2 Simon Task was updated on September 24, 2026 and Los OSOs on July 5, 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.*