# Uuu vs Simple Calculator. +

The clearest difference is review sentiment: Simple Calculator. + at 73% against Uuu's 0%. Simple Calculator. + also leads on update cadence (every 3 months vs every 95 months) and monetization model (free with in-app purchases vs paid). Uuu's advantage is iOS requirement (12.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Uuu costs $1.99 and Simple Calculator. + $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Uuu ships an update every 95 months, Simple Calculator. + every 3 months. The most recent releases landed on September 22, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Uuu | Simple Calculator. + |
| --- | --- | --- |
| Price | $1.99 | $1.99 |
| Rating | — | **[4.7 (147 ratings)](https://appshunter.io/ios/app/simple-calculator-plus/id1324927779/reviews)** |
| Number of ratings | — | **147** |
| Positive reviews | 0.0% of reviews | **72.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 95 months | **Every 3 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 24 MB | 1 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kaji Takatsugu](https://appshunter.io/developer/465688467) | [tasser gyati](https://appshunter.io/developer/1324926550) |

## What reviewers say

### Uuu

[App page](https://appshunter.io/ios/app/uuu/id1154032477)

This app simulates Japanese patrol car sirens and lights. It features pre-recorded siren sounds, the ability to record and play back custom audio, and a flashing light effect. It does not include a siren amplifier function.

**Highlights:** Pre-recorded siren sounds, Custom audio recording and playback, Flashing light effect, Simulates patrol car sirens, Record up to 5 channels of audio

**Features:** macOS Compatibility

**In-app purchases:** none


### Simple Calculator. +

[App page](https://appshunter.io/ios/app/simple-calculator-plus/id1324927779)

This app offers a straightforward and dependable calculator for iPhone and iPad. It includes advanced features like tax calculation, cost/selling price/margin calculations, and memory operations. A free version is available to try before purchasing.

**Highlights:** 12-digit display, Tax calculation, Cost, selling price, and gross margin calculations, Memory operations, Grand total (GT), Percentage calculation

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

**In-app purchases:** none


## Frequently asked questions

### Is Uuu free?

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

### Is Simple Calculator. + free?

Simple Calculator. + costs $1.99, with no in-app purchases.

### Do Uuu or Simple Calculator. + have ads?

Neither Uuu nor Simple Calculator. + shows ads.

### Which is updated more often, Uuu or Simple Calculator. +?

Uuu ships an update every 95 months, and Simple Calculator. + every 3 months. Most recently, Uuu was updated on September 22, 2026 and Simple Calculator. + on September 23, 2026.

---

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