# R2o式わりかん電卓 vs tatetsu

The clearest difference is update cadence: R2o式わりかん電卓 at fortnightly against tatetsu's every 26 months. R2o式わりかん電卓 also leads on iOS requirement (9.0 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.

R2o式わりかん電卓 ships an update fortnightly, tatetsu every 26 months. The most recent releases landed on October 4, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | R2o式わりかん電卓 | tatetsu |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 26 months |
| Monetization | — | Free |
| Size | 22 MB | 25 MB |
| Requires iOS | **9.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Atsuo Kazama](https://appshunter.io/developer/1442822891) | [Tetsuya Nishikawa](https://appshunter.io/developer/1454906652) |

## What reviewers say

### R2o式わりかん電卓

[App page](https://appshunter.io/ios/app/r2o/id1442822892)

**Features:** macOS Compatibility

**In-app purchases:** none


### tatetsu

[App page](https://appshunter.io/ios/app/tatetsu/id1611326705)

Easily calculate and manage shared expenses for trips or meals. This application simplifies the process of splitting bills among multiple people, clearly showing who owes what and how to settle payments.

**Highlights:** Split bill calculations, Payer status tracking, Settlement procedure guidance, Trip expense management, Meal expense management

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

**In-app purchases:** none


## Frequently asked questions

### Is R2o式わりかん電卓 free?

R2o式わりかん電卓 is free to download, with no in-app purchases.

### Is tatetsu free?

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

### Do R2o式わりかん電卓 or tatetsu have ads?

Neither R2o式わりかん電卓 nor tatetsu shows ads.

### Which is updated more often, R2o式わりかん電卓 or tatetsu?

R2o式わりかん電卓 ships an update fortnightly, and tatetsu every 26 months. Most recently, R2o式わりかん電卓 was updated on October 4, 2026 and tatetsu 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.*