# Tabi Calc vs Quick Math for Watch

The clearest difference is price: Tabi Calc at Free against Quick Math for Watch's $5.99. Tabi Calc also leads on update cadence (fortnightly vs every 41 months). Quick Math for Watch's advantage is in-app purchases (none vs 3) and iOS requirement (15.0 vs 17.0). On ads and device support there is nothing between them.

Tabi Calc is free to download; Quick Math for Watch costs $5.99 up front. Tabi Calc sells 3 in-app purchases, starting at $0.99 per month. Quick Math for Watch asks for nothing beyond the download.

Tabi Calc ships an update fortnightly, Quick Math for Watch every 41 months. The most recent releases landed on October 8, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Tabi Calc | Quick Math for Watch |
| --- | --- | --- |
| Price | **Free** | $5.99 |
| 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 41 months |
| Monetization | Free with in-app purchases | — |
| Size | 10 MB | 2 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Tsuyoshi Niwa](https://appshunter.io/developer/888556976) | [Khuong Pham](https://appshunter.io/developer/1593197909) |

## 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 |


### Quick Math for Watch

[App page](https://appshunter.io/ios/app/quick-math-for-watch/id1485794967)

**In-app purchases:** none


## Frequently asked questions

### Is Tabi Calc free?

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

### Is Quick Math for Watch free?

Quick Math for Watch costs $5.99, with no in-app purchases.

### Do Tabi Calc or Quick Math for Watch have ads?

Neither Tabi Calc nor Quick Math for Watch shows ads.

### Which is updated more often, Tabi Calc or Quick Math for Watch?

Tabi Calc ships an update fortnightly, and Quick Math for Watch every 41 months. Most recently, Tabi Calc was updated on October 8, 2026 and Quick Math for Watch on October 1, 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.*