# OTOMO App vs Sit Solar

OTOMO App and Sit Solar are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 26, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | OTOMO App | Sit Solar |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Size | 36 MB | 146 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Eelectron Spa](https://appshunter.io/developer/1219250563) | [成都赛特新能科技有限公司](https://appshunter.io/developer/1691445203) |

## What reviewers say

### OTOMO App

[App page](https://appshunter.io/ios/app/otomo-app/id1219250564)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sit Solar

[App page](https://appshunter.io/ios/app/sit-solar/id6449988665)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is OTOMO App free?

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

### Is Sit Solar free?

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

### Do OTOMO App or Sit Solar have ads?

Neither OTOMO App nor Sit Solar shows ads.

### Which is updated more often, OTOMO App or Sit Solar?

OTOMO App ships an update every 2 months, and Sit Solar every 2 months. Most recently, OTOMO App was updated on October 26, 2026 and Sit Solar on October 21, 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.*