# Time vs Duovigintuple Calc

The clearest difference is ads: Time at none against Duovigintuple Calc's shown. Time also leads on update cadence (every 6 days vs every 2 weeks). Duovigintuple Calc's advantage is iOS requirement (15.8.3 vs 17.6). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Time ships an update every 6 days, Duovigintuple Calc every 2 weeks. The most recent releases landed on June 25, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Time | Duovigintuple Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/time-calc/id699524076/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 6 days** | Every 2 weeks |
| Monetization | Free | — |
| Size | 1 MB | 36 MB |
| Requires iOS | 17.6 | **15.8.3** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kazuyuki Saito](https://appshunter.io/developer/699524079) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### Time

[App page](https://appshunter.io/ios/app/time-calc/id699524076)

This app simplifies time calculations for personal flight logs. It exclusively handles addition and subtraction of hours and minutes, automatically interpreting the last two digits of any input as minutes.

**Highlights:** Time addition, Time subtraction, Automatic minute interpretation, Personal flight log focus

**Features:** macOS Compatibility

**In-app purchases:** none


### Duovigintuple Calc

[App page](https://appshunter.io/ios/app/duovigintuple-calc/id6742525847)

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

**In-app purchases:** none


## Frequently asked questions

### Is Time free?

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

### Is Duovigintuple Calc free?

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

### Do Time or Duovigintuple Calc have ads?

Duovigintuple Calc shows ads; Time does not.

### Which is updated more often, Time or Duovigintuple Calc?

Time ships an update every 6 days, and Duovigintuple Calc every 2 weeks. Most recently, Time was updated on June 25, 2026 and Duovigintuple Calc 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.*