# OneNS vs C2ME Sentinel

The clearest difference is update cadence: OneNS at every 2 weeks against C2ME Sentinel's every 2 months. C2ME Sentinel's advantage is iOS requirement (15.0 vs 17.6). 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.

OneNS ships an update every 2 weeks, C2ME Sentinel every 2 months. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | OneNS | C2ME Sentinel |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.8 (6 ratings)](https://appshunter.io/ios/app/onens/id1619937291/reviews)** | — |
| Number of ratings | **6** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 106 MB | 22 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [MINDEF/SAF](https://appshunter.io/developer/523577540) | [Connect2ME](https://appshunter.io/developer/1172655477) |

## What reviewers say

### OneNS

[App page](https://appshunter.io/ios/app/onens/id1619937291)

This app provides a centralized digital platform for National Service (NS) related services. Users can manage their NS details, apply for deferments, book IPPT, and track their progress. It aims to make the NS experience more convenient and engaging.

**Highlights:** Digital NS services portal, QR Code/Geolocation check-in, View ICT and Mobilisation details, Apply for deferment, Book IPPT, Track NS milestones and awards

**In-app purchases:** none


### C2ME Sentinel

[App page](https://appshunter.io/ios/app/c2me-sentinel/id6759701952)

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

**In-app purchases:** none


## Frequently asked questions

### Is OneNS free?

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

### Is C2ME Sentinel free?

C2ME Sentinel is free to download, with no in-app purchases.

### Do OneNS or C2ME Sentinel have ads?

Neither OneNS nor C2ME Sentinel shows ads.

### Which is updated more often, OneNS or C2ME Sentinel?

OneNS ships an update every 2 weeks, and C2ME Sentinel every 2 months. Most recently, OneNS was updated on October 27, 2026 and C2ME Sentinel on October 25, 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.*