# OTOGE trainer vs Calc

The clearest difference is in-app purchases: OTOGE trainer at none against Calc's 11. OTOGE trainer also leads on update cadence (daily vs weekly). Calc's advantage is device support (4 vs 2) and iOS requirement (15.0 vs 17.0). On price and ads there is nothing between them.

Both are free to download. Calc sells 11 one-off in-app purchases. OTOGE trainer asks for nothing beyond the download.

OTOGE trainer ships an update daily, Calc weekly. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | OTOGE trainer | Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.1 (49 ratings)](https://appshunter.io/ios/app/calc-desktop-mate-widgets/id6782669667/reviews)** |
| Number of ratings | — | **49** |
| Positive reviews | — | 77.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Weekly |
| Monetization | — | Free with in-app purchases |
| Size | 3 MB | 156 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [flow LLC](https://appshunter.io/developer/1758577970) | [インフィニットループ](https://appshunter.io/developer/507088117) |

## What reviewers say

### OTOGE trainer

[App page](https://appshunter.io/ios/app/otoge-trainer/id6563141997)

**Features:** macOS Compatibility

**In-app purchases:** none


### Calc

[App page](https://appshunter.io/ios/app/calc-desktop-mate-widgets/id6782669667)

This app adds a fun, interactive calculator experience with cute character reactions and customizable designs. It also features a unique 'Performance Mode' for playing music and hidden 'SP Answer Actions' for special character responses.

**Highlights:** Cute character reactions with button presses, Customizable calculator themes, Performance Mode for music playback, Hidden SP Answer Actions, Paid character DLCs available, Voice lines for each character

**Features:** Family Sharing, Vision Pro support

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kasane Teto | $2.99 | one-time |
| Zundamon | $2.99 | one-time |
| Koharu Rikka | $2.99 | one-time |
| Natsuki Karin | $2.99 | one-time |
| Hanakuma Chifuyu | $2.99 | one-time |
| Additional Character MEIKO | $2.99 | one-time |
| Additional Character KAITO | $2.99 | one-time |
| Additional Character Kagamine Rin | $2.99 | one-time |
| Additional Character Kagamine Len | $2.99 | one-time |
| Additional Character Megurine Luka | $2.99 | one-time |
| Additional Character Hatsune Miku | $2.99 | one-time |


## Frequently asked questions

### Is OTOGE trainer free?

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

### Is Calc free?

Calc is free to download, with in-app purchases available.

### Do OTOGE trainer or Calc have ads?

Neither OTOGE trainer nor Calc shows ads.

### Which is updated more often, OTOGE trainer or Calc?

OTOGE trainer ships an update daily, and Calc weekly. Most recently, OTOGE trainer was updated on October 25, 2026 and Calc on October 28, 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.*