# Sintex Smart Tank vs DateMark

The clearest difference is in-app purchases: Sintex Smart Tank at none against DateMark's 1. Sintex Smart Tank also leads on ads (none vs shown) and iOS requirement (8.0 vs 17.6). On price and device support there is nothing between them.

Both are free to download. DateMark sells 1 one-off in-app purchase. Sintex Smart Tank asks for nothing beyond the download.

## The numbers

| Metric | Sintex Smart Tank | DateMark |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 4 days |
| Size | 32 MB | 6 MB |
| Requires iOS | **8.0** | 17.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Riot Labz Private Limited](https://appshunter.io/developer/999464989) | [Tim Tharaldsen](https://appshunter.io/developer/1840919348) |

## What reviewers say

### Sintex Smart Tank

[App page](https://appshunter.io/ios/app/sintex-smart-tank/id1470384947)

**In-app purchases:** none


### DateMark

[App page](https://appshunter.io/ios/app/datemark/id6757658837)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DateMark Premium | $3.99 | one-time |


## Frequently asked questions

### Is Sintex Smart Tank free?

Sintex Smart Tank is free to download, with no in-app purchases.

### Is DateMark free?

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

### Do Sintex Smart Tank or DateMark have ads?

DateMark shows ads; Sintex Smart Tank does not.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*