# Tabi Calc vs QSS

The clearest difference is in-app purchases: QSS at none against Tabi Calc's 3. QSS also leads on iOS requirement (12.4 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Tabi Calc sells 3 in-app purchases, starting at $0.99 per month. QSS asks for nothing beyond the download.

Tabi Calc ships an update fortnightly, QSS every 10 days. The most recent releases landed on September 20, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Tabi Calc | QSS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (40 ratings)](https://appshunter.io/ios/app/tabi-calc/id1246912834/reviews)** | — |
| Number of ratings | **40** | — |
| Positive reviews | 43.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 10 days** |
| Monetization | Free with in-app purchases | — |
| Size | 10 MB | 15 MB |
| Requires iOS | 17.0 | **12.4** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Tsuyoshi Niwa](https://appshunter.io/developer/888556976) | [Qest Solutions Pte Ltd](https://appshunter.io/developer/1763641904) |

## What reviewers say

### Tabi Calc

[App page](https://appshunter.io/ios/app/tabi-calc/id1246912834)

This app is a travel-focused calculator that simplifies date, time, and currency calculations. It helps users plan trips, manage itineraries, and convert currencies with live or offline rates. Designed for travelers, it offers an intuitive interface and accurate results.

**Highlights:** Date and time difference calculations, Add/subtract days, months, years from dates, Multi-currency converter with live/offline rates, Supports over 160 currencies, Location-based currency suggestions, Offline currency rate support, Saves recent calculations

**Features:** Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.99 | per month |
| 6 month subscription | $4.49 | per 6 months |
| Yearly Subscription | $7.99 | per year |


### QSS

[App page](https://appshunter.io/ios/app/qss/id6504615401)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Tabi Calc free?

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

### Is QSS free?

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

### Do Tabi Calc or QSS have ads?

Neither Tabi Calc nor QSS shows ads.

### Which is updated more often, Tabi Calc or QSS?

Tabi Calc ships an update fortnightly, and QSS every 10 days. Most recently, Tabi Calc was updated on September 20, 2026 and QSS on September 16, 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.*