# FAS vs calcu

The clearest difference is price: calcu at $1.99 against FAS's $3.99. FAS's advantage is iOS requirement (12.0 vs 17.2). On ads, in-app purchases and device support there is nothing between them.

FAS costs $3.99 and calcu $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | FAS | calcu |
| --- | --- | --- |
| Price | $3.99 | **$1.99** |
| Positive reviews | 10.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 95 months | — |
| Monetization | Free | — |
| Size | 52 MB | 0 MB |
| Requires iOS | **12.0** | 17.2 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Kaji Takatsugu](https://appshunter.io/developer/465688467) | [Moving Squad Inc.](https://appshunter.io/developer/1004830155) |

## What reviewers say

### FAS

[App page](https://appshunter.io/ios/app/fas/id1149266961)

This app simulates various Japanese emergency vehicle sirens and voice announcements. It allows for volume adjustment of sirens and voice messages, and even lets you record custom announcements. The interface includes a flashing light effect.

**Highlights:** Simulates police, ambulance, and fire truck sirens, Includes voice announcements for emergency vehicles, Adjustable siren and voice volume, Record custom voice messages, Flashing light effect, Multiple siren and voice channels

**Features:** macOS Compatibility

**In-app purchases:** none


### calcu

[App page](https://appshunter.io/ios/app/calcu-liar/id6477363058)

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

**In-app purchases:** none


## Frequently asked questions

### Is FAS free?

FAS costs $3.99, with no in-app purchases.

### Is calcu free?

calcu costs $1.99, with no in-app purchases.

### Do FAS or calcu have ads?

Neither FAS nor calcu shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*