# タダコピSP vs PETRO

The clearest difference is ads: PETRO at none against タダコピSP's shown. PETRO also leads on update cadence (every 9 days vs every 3 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

タダコピSP ships an update every 3 weeks, PETRO every 9 days. The most recent releases landed on September 28, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | タダコピSP | PETRO |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Monetization | Ad-supported | — |
| Size | 26 MB | 83 MB |
| Requires iOS | 15.1 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SmartCampus, Inc.](https://appshunter.io/developer/1372004516) | [G-tech International](https://appshunter.io/developer/1724934663) |

## What reviewers say

### タダコピSP

[App page](https://appshunter.io/ios/app/sp/id1470562932)

This app allows university students to copy, scan, and print documents for free by displaying advertisements on the back of the paper. It offers direct printing from smartphones and nationwide availability across numerous campuses.

**Highlights:** Free copying, scanning, and printing, Full color output at no cost, Direct smartphone printing, Scan to USB, Available at 65 universities nationwide, Easy 4-step usage

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

**In-app purchases:** none


### PETRO

[App page](https://appshunter.io/ios/app/petro/id6758812287)

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

**In-app purchases:** none


## Frequently asked questions

### Is タダコピSP free?

タダコピSP is free to download, with no in-app purchases.

### Is PETRO free?

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

### Do タダコピSP or PETRO have ads?

タダコピSP shows ads; PETRO does not.

### Which is updated more often, タダコピSP or PETRO?

タダコピSP ships an update every 3 weeks, and PETRO every 9 days. Most recently, タダコピSP was updated on September 28, 2026 and PETRO on October 9, 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.*