# Sunain vs Caspius

The clearest difference is iOS requirement: Sunain at 15.1 against Caspius's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Sunain ships an update every 2 days, Caspius every 3 days. The most recent releases landed on October 4, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Sunain | Caspius |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/caspius/id6761165970/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 3 days |
| Monetization | — | Free |
| Size | 12 MB | 37 MB |
| Requires iOS | **15.1** | 26.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Zurons, Inc.](https://appshunter.io/developer/1764155077) | [Caspius Dev](https://appshunter.io/developer/1884270440) |

## What reviewers say

### Sunain

[App page](https://appshunter.io/ios/app/sunain/id6759480370)

**Features:** macOS Compatibility

**In-app purchases:** none


### Caspius

[App page](https://appshunter.io/ios/app/caspius/id6761165970)

This app lets you record everyday household tasks to help train AI for robotics. You earn points for each approved video submission, contributing to real-world research and development. Track your progress and earnings as you help teach robots how to perform common chores.

**Highlights:** Record everyday tasks, Earn points for submissions, Contribute to AI research, Track progress and earnings, Browse and pick available tasks, Leaderboard rankings

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

**In-app purchases:** none


## Frequently asked questions

### Is Sunain free?

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

### Is Caspius free?

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

### Do Sunain or Caspius have ads?

Neither Sunain nor Caspius shows ads.

### Which is updated more often, Sunain or Caspius?

Sunain ships an update every 2 days, and Caspius every 3 days. Most recently, Sunain was updated on October 4, 2026 and Caspius on October 6, 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.*