# D vs SmartSafetySolution

The clearest difference is iOS requirement: D at 13.0 against SmartSafetySolution's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

D ships an update every 5 weeks, SmartSafetySolution every 2 months. The most recent releases landed on May 16, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | D | SmartSafetySolution |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Size | 34 MB | 20 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [PTT ICT Solutions Company Limited](https://appshunter.io/developer/459684765) | [UPLEAT](https://appshunter.io/developer/1868899433) |

## What reviewers say

### D

[App page](https://appshunter.io/ios/app/d-time/id1478384600)

**Features:** macOS Compatibility

**In-app purchases:** none


### SmartSafetySolution

[App page](https://appshunter.io/ios/app/smartsafetysolution/id6444471490)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is D free?

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

### Is SmartSafetySolution free?

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

### Do D or SmartSafetySolution have ads?

Neither D nor SmartSafetySolution shows ads.

### Which is updated more often, D or SmartSafetySolution?

D ships an update every 5 weeks, and SmartSafetySolution every 2 months. Most recently, D was updated on May 16, 2026 and SmartSafetySolution on September 12, 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.*