# eValidator vs ONE Changi

The clearest difference is update cadence: ONE Changi at every 3 weeks against eValidator's every 22 months. 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.

eValidator ships an update every 22 months, ONE Changi every 3 weeks. The most recent releases landed on September 10, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | eValidator | ONE Changi |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 22 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 20 MB | 83 MB |
| Requires iOS | 15.6 | **15.5** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [POS DIGICERT SDN. BHD.](https://appshunter.io/developer/1529420101) | [Changi Airport Group (Singapore)](https://appshunter.io/developer/391730851) |

## What reviewers say

### eValidator

[App page](https://appshunter.io/ios/app/evalidator/id6443813736)

**Features:** macOS Compatibility

**In-app purchases:** none


### ONE Changi

[App page](https://appshunter.io/ios/app/one-changi/id6743378535)

Stay informed about Changi Airport community news, access e-learning materials, and discover inspiring stories. Earn exclusive rewards for your engagement.

**Highlights:** Airport community news updates, E-learning resources access, Inspiring ground stories, Exclusive rewards program, Engagement features

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

**In-app purchases:** none


## Frequently asked questions

### Is eValidator free?

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

### Is ONE Changi free?

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

### Do eValidator or ONE Changi have ads?

Neither eValidator nor ONE Changi shows ads.

### Which is updated more often, eValidator or ONE Changi?

eValidator ships an update every 22 months, and ONE Changi every 3 weeks. Most recently, eValidator was updated on September 10, 2026 and ONE Changi on September 17, 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.*