# Time Delay calculator vs Binary Calculator SDG

The clearest difference is update cadence: Time Delay calculator at fortnightly against Binary Calculator SDG's every 12 months. Binary Calculator SDG's advantage is iOS requirement (11.0 vs 15.8.3). On price, ads, 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 Delay calculator ships an update fortnightly, Binary Calculator SDG every 12 months. Both last shipped on November 8, 2026.

## The numbers

| Metric | Time Delay calculator | Binary Calculator SDG |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Fortnightly** | Every 12 months |
| Size | 36 MB | 12 MB |
| Requires iOS | 15.8.3 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) | [SDG CODE DOO NIS](https://appshunter.io/developer/1343251532) |

## What reviewers say

### Time Delay calculator

[App page](https://appshunter.io/ios/app/time-delay-calculator/id6502032872)

**Features:** macOS Compatibility

**In-app purchases:** none


### Binary Calculator SDG

[App page](https://appshunter.io/ios/app/binary-calculator-sdg/id6741471372)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Time Delay calculator free?

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

### Is Binary Calculator SDG free?

Binary Calculator SDG is free to download, with no in-app purchases.

### Do Time Delay calculator or Binary Calculator SDG have ads?

Both Time Delay calculator and Binary Calculator SDG show ads.

### Which is updated more often, Time Delay calculator or Binary Calculator SDG?

Time Delay calculator ships an update fortnightly, and Binary Calculator SDG every 12 months. Most recently, Time Delay calculator was updated on November 8, 2026 and Binary Calculator SDG on November 8, 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.*