# HELLO vs tadano calculator

The clearest difference is update cadence: HELLO at every 8 months against tadano calculator's every 27 months. tadano calculator's advantage is iOS requirement (13.0 vs 16.0). 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.

HELLO ships an update every 8 months, tadano calculator every 27 months. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | HELLO | tadano calculator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 months** | Every 27 months |
| Size | 33 MB | 17 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TADANO Ltd.](https://appshunter.io/developer/1436824453) | [plusvision](https://appshunter.io/developer/1571455587) |

## What reviewers say

### HELLO

[App page](https://appshunter.io/ios/app/hello-data-link/id1436824454)

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

**In-app purchases:** none


### tadano calculator

[App page](https://appshunter.io/ios/app/tadano-calculator/id1584940548)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HELLO free?

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

### Is tadano calculator free?

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

### Do HELLO or tadano calculator have ads?

Neither HELLO nor tadano calculator shows ads.

### Which is updated more often, HELLO or tadano calculator?

HELLO ships an update every 8 months, and tadano calculator every 27 months. Most recently, HELLO was updated on October 29, 2026 and tadano calculator on October 30, 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.*