# Time Calculator vs ModalityFit

The clearest difference is in-app purchases: ModalityFit at none against Time Calculator's 1. ModalityFit also leads on update cadence (every 8 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Time Calculator sells 1 one-off in-app purchase. ModalityFit asks for nothing beyond the download.

Time Calculator ships an update every 2 months, ModalityFit every 8 days. The most recent releases landed on November 3, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Time Calculator | ModalityFit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (168 ratings)](https://appshunter.io/ios/app/time-calculator-add-subtract/id1583726955/reviews)** | — |
| Number of ratings | **168** | — |
| Positive reviews | 38.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 8 days** |
| Monetization | Free with in-app purchases | — |
| Size | 1 MB | 30 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Phan Nhat Đang](https://appshunter.io/developer/1437390098) | [SERVICEX S.R.L.](https://appshunter.io/developer/1215274302) |

## What reviewers say

### Time Calculator

[App page](https://appshunter.io/ios/app/time-calculator-add-subtract/id1583726955)

Easily solve time-related calculations. Add or subtract time values, calculate durations between two times or dates, and manage time from a starting point. This intuitive and simple application makes time math straightforward.

**Highlights:** Add or subtract time values, Add/subtract from a starting time and date, Calculate time duration between two times, Calculate time duration between two dates, Intuitive and easy to use interface

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock all features | $3.99 | one-time |


### ModalityFit

[App page](https://appshunter.io/ios/app/modalityfit/id6745408344)

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

**In-app purchases:** none


## Frequently asked questions

### Is Time Calculator free?

Time Calculator is free to download, with in-app purchases available.

### Is ModalityFit free?

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

### Do Time Calculator or ModalityFit have ads?

Neither Time Calculator nor ModalityFit shows ads.

### Which is updated more often, Time Calculator or ModalityFit?

Time Calculator ships an update every 2 months, and ModalityFit every 8 days. Most recently, Time Calculator was updated on November 3, 2026 and ModalityFit 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.*