# OIDDS vs OneNS

The clearest difference is update cadence: OneNS at every 2 weeks against OIDDS's every 3 months. OIDDS's advantage is iOS requirement (12.0 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.

OIDDS ships an update every 3 months, OneNS every 2 weeks. The most recent releases landed on October 7, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | OIDDS | OneNS |
| --- | --- | --- |
| 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 3 months | **Every 2 weeks** |
| Monetization | — | Free |
| Size | 45 MB | 106 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CAMP CHALLENGE PTE. LTD.](https://appshunter.io/developer/1512378273) | [MINDEF/SAF](https://appshunter.io/developer/523577540) |

## What reviewers say

### OIDDS

[App page](https://appshunter.io/ios/app/oidds/id1512378274)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is OIDDS free?

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

### Is OneNS free?

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

### Do OIDDS or OneNS have ads?

Neither OIDDS nor OneNS shows ads.

### Which is updated more often, OIDDS or OneNS?

OIDDS ships an update every 3 months, and OneNS every 2 weeks. Most recently, OIDDS was updated on October 7, 2026 and OneNS on October 24, 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.*