# Zeturn vs Smart Adding Machine

The clearest difference is price: Zeturn at Free against Smart Adding Machine's $3.99. Zeturn also leads on iOS requirement (15.0 vs 17.0). Smart Adding Machine's advantage is update cadence (every 3 weeks vs every 2 months). On ads, in-app purchases and device support there is nothing between them.

Zeturn is free to download; Smart Adding Machine costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Zeturn ships an update every 2 months, Smart Adding Machine every 3 weeks. The most recent releases landed on October 4, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Zeturn | Smart Adding Machine |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[3.2 (10 ratings)](https://appshunter.io/ios/app/zeturn/id6444774690/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 22 MB | 0 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Zeturn LLC](https://appshunter.io/developer/1656757690) | [Harry Detrick](https://appshunter.io/developer/1698895959) |

## What reviewers say

### Zeturn

[App page](https://appshunter.io/ios/app/zeturn/id6444774690)

Print shipping and return labels directly from your phone, bypassing post office queues. Purchase USPS or UPS labels within the app and easily print PDFs or images from various sources after cropping.

**Highlights:** Print shipping and return labels, Purchase USPS/UPS labels, Print PDFs and images, Upload from phone storage, Crop and print functionality

**Features:** macOS Compatibility

**In-app purchases:** none


### Smart Adding Machine

[App page](https://appshunter.io/ios/app/smart-adding-machine/id6452400755)

**In-app purchases:** none


## Frequently asked questions

### Is Zeturn free?

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

### Is Smart Adding Machine free?

Smart Adding Machine costs $3.99, with no in-app purchases.

### Do Zeturn or Smart Adding Machine have ads?

Neither Zeturn nor Smart Adding Machine shows ads.

### Which is updated more often, Zeturn or Smart Adding Machine?

Zeturn ships an update every 2 months, and Smart Adding Machine every 3 weeks. Most recently, Zeturn was updated on October 4, 2026 and Smart Adding Machine on October 11, 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.*