# OneNS vs OPENFLOW BOOKING

The clearest difference is update cadence: OneNS at every 2 weeks against OPENFLOW BOOKING's every 6 weeks. OneNS also leads on iOS requirement (13.0 vs 15.1). 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, OPENFLOW BOOKING every 6 weeks. The most recent releases landed on October 12, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | OneNS | OPENFLOW BOOKING |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (5 ratings)](https://appshunter.io/ios/app/onens/id1619937291/reviews)** | — |
| Number of ratings | **5** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 6 weeks |
| Monetization | Free | — |
| Size | 69 MB | 32 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MINDEF/SAF](https://appshunter.io/developer/523577540) | [UPXP](https://appshunter.io/developer/1632226967) |

## 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


### OPENFLOW BOOKING

[App page](https://appshunter.io/ios/app/openflow-booking/id6755063791)

**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 OPENFLOW BOOKING free?

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

### Do OneNS or OPENFLOW BOOKING have ads?

Neither OneNS nor OPENFLOW BOOKING shows ads.

### Which is updated more often, OneNS or OPENFLOW BOOKING?

OneNS ships an update every 2 weeks, and OPENFLOW BOOKING every 6 weeks. Most recently, OneNS was updated on October 12, 2026 and OPENFLOW BOOKING on September 28, 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.*