# SPU i vs KUSIP E

The clearest difference is update cadence: KUSIP E at monthly against SPU i's every 2 months. SPU i's advantage is iOS requirement (6.0 vs 12.1). 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.

SPU i ships an update every 2 months, KUSIP E monthly. The most recent releases landed on November 10, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | SPU i | KUSIP E |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Size | 36 MB | 45 MB |
| Requires iOS | **6.0** | 12.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Sripatum University](https://appshunter.io/developer/491287641) | [BOOKDOSE COMPANY LIMITED](https://appshunter.io/developer/459445000) |

## What reviewers say

### SPU i

[App page](https://appshunter.io/ios/app/spu-i-ebook/id535039816)

**Features:** macOS Compatibility

**In-app purchases:** none


### KUSIP E

[App page](https://appshunter.io/ios/app/kusip-e-library/id6449289647)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SPU i free?

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

### Is KUSIP E free?

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

### Do SPU i or KUSIP E have ads?

Neither SPU i nor KUSIP E shows ads.

### Which is updated more often, SPU i or KUSIP E?

SPU i ships an update every 2 months, and KUSIP E monthly. Most recently, SPU i was updated on November 10, 2026 and KUSIP E on November 7, 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.*