# Calzy vs Naruko SIP

The clearest difference is price: Naruko SIP at Free against Calzy's $1.99. Naruko SIP also leads on in-app purchases (none vs 3) and iOS requirement (13.0 vs 26.0). Calzy's advantage is update cadence (every 2 days vs every 9 days) and chart position (#105 vs unranked). On ads and device support there is nothing between them.

Naruko SIP is free to download; Calzy costs $1.99 up front. Calzy sells 3 one-off in-app purchases. Naruko SIP asks for nothing beyond the download.

Calzy ships an update every 2 days, Naruko SIP every 9 days. The most recent releases landed on September 26, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Calzy | Naruko SIP |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.7 (1.9K ratings)](https://appshunter.io/ios/app/calzy/id623690732/reviews)** | — |
| Number of ratings | **1.9K** | — |
| Positive reviews | 76.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 9 days |
| Monetization | Paid | — |
| Best chart rank | **#105** | — |
| Size | 66 MB | 43 MB |
| Requires iOS | 26.0 | **13.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPod, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Raja Vijayaraman](https://appshunter.io/developer/562575890) | [RINGING INC](https://appshunter.io/developer/1585929700) |

## What reviewers say

### Calzy

[App page](https://appshunter.io/ios/app/calzy/id623690732)

**Currently charting:** #105 Top Paid · Productivity (US App Store)

This app offers a modern and intuitive way to perform everyday calculations. It features a unique Memory Area for reusing values, bookmarking for saved calculations, and leverages the latest iOS technologies for a seamless experience. Designed with privacy in mind, it's suitable for students and professionals alike.

**Highlights:** Memory Area for reusing values, Calculation bookmarking with titles, Basic and advanced calculation modes, Privacy mode with Face ID, Live Activity and Haptic Touch support, Customizable keypad layout, Dark and Light modes

**Features:** macOS Compatibility, Apple Watch app, iMessage stickers, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Medium Tip | $3.99 | one-time |
| Huge Tip | $9.99 | one-time |


### Naruko SIP

[App page](https://appshunter.io/ios/app/naruko-sip/id6771672009)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Calzy free?

Calzy costs $1.99, and also offers in-app purchases.

### Is Naruko SIP free?

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

### Do Calzy or Naruko SIP have ads?

Neither Calzy nor Naruko SIP shows ads.

### Which is updated more often, Calzy or Naruko SIP?

Calzy ships an update every 2 days, and Naruko SIP every 9 days. Most recently, Calzy was updated on September 26, 2026 and Naruko SIP on September 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.*