# inno3C Smart vs SoloBook

The clearest difference is update cadence: SoloBook at every 3 weeks against inno3C Smart's every 23 months. inno3C Smart's advantage is iOS requirement (11.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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

inno3C Smart ships an update every 23 months, SoloBook every 3 weeks. The most recent releases landed on October 2, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | inno3C Smart | SoloBook |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 23 months | **Every 3 weeks** |
| Size | 182 MB | 41 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [INNO3C LIMITED](https://appshunter.io/developer/1635098644) | [Cider System Company Limited](https://appshunter.io/developer/6797756087) |

## What reviewers say

### inno3C Smart

[App page](https://appshunter.io/ios/app/inno3c-smart/id1635098642)

**In-app purchases:** none


### SoloBook

[App page](https://appshunter.io/ios/app/solobook/id6799008950)

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

**In-app purchases:** none


## Frequently asked questions

### Is inno3C Smart free?

inno3C Smart is free to download, with no in-app purchases.

### Is SoloBook free?

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

### Do inno3C Smart or SoloBook have ads?

Neither inno3C Smart nor SoloBook shows ads.

### Which is updated more often, inno3C Smart or SoloBook?

inno3C Smart ships an update every 23 months, and SoloBook every 3 weeks. Most recently, inno3C Smart was updated on October 2, 2026 and SoloBook on October 10, 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.*