# flex vs 스마트링크

The clearest difference is ads: flex at none against 스마트링크's shown. flex also leads on update cadence (every 3 days vs every 2 months) and review sentiment (28% vs 0%). 스마트링크's advantage is monetization model (ad-supported vs freemium) and iOS requirement (14.0 vs 16.4). On price, 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.

flex ships an update every 3 days, 스마트링크 every 2 months. The most recent releases landed on September 21, 2026 and August 29, 2026 respectively.

## The numbers

| Metric | flex | 스마트링크 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (18 ratings)](https://appshunter.io/ios/app/flex-relations-driven-ax/id1535757707/reviews)** | — |
| Number of ratings | **18** | — |
| Positive reviews | **28.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 3 days** | Every 2 months |
| Monetization | Freemium | **Ad-supported** |
| Size | 460 MB | 39 MB |
| Requires iOS | 16.4 | **14.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [플렉스 주식회사](https://appshunter.io/developer/1535757709) | [SK RENT A CAR CO., LTD.](https://appshunter.io/developer/373070208) |

## What reviewers say

### flex

[App page](https://appshunter.io/ios/app/flex-relations-driven-ax/id1535757707)

This app centralizes all HR data, streamlining team growth through seamless data flow. It offers mobile access to attendance tracking, leave requests, approvals, company information, and internal communications.

**Highlights:** Mobile attendance tracking, Leave and vacation requests/approvals, Electronic approvals and workflows, View payslips and company info, Internal announcements and feedback, Automated leave management

**In-app purchases:** none

**What reviewers like**

- 👍 Intuitive and convenient
- 👍 Good design and user-friendly
- 👍 Useful for leave and salary confirmation
- 👍 Convenient for attendance management
- 👍 Better than previous apps

**What reviewers complain about**

- 🐛 Frequent crashes and freezes
- 🐛 Login issues and errors
- 🐛 Poor UI/UX design
- 🐛 Slow performance
- 🐛 Inconsistent functionality

**Reported bugs**

- App crashes immediately after launch
- App won't launch
- App freezes or becomes unresponsive
- Login fails or infinite loading
- Attendance buttons not working

**Requested features**

- Allow writing reviews via app
- Add widget for attendance
- Add remaining time display
- Improve UI for break time registration
- Add Apple Shortcuts support


### 스마트링크

[App page](https://appshunter.io/ios/app/id1661603946)

This app enables employees to easily share and manage company vehicles for both business and personal use. It offers real-time tracking, cost management, and automated driving logs for efficient fleet operation and improved driver safety.

**Highlights:** Company car sharing for employees, Real-time vehicle location monitoring, Integrated cost management (fuel, tolls), Automated driving log generation (tax form), Advanced safety driving score calculation, Driver behavior analysis

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

**In-app purchases:** none


## Frequently asked questions

### Is flex free?

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

### Is 스마트링크 free?

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

### Do flex or 스마트링크 have ads?

스마트링크 shows ads; flex does not.

### Which is updated more often, flex or 스마트링크?

flex ships an update every 3 days, and 스마트링크 every 2 months. Most recently, flex was updated on September 21, 2026 and 스마트링크 on August 29, 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.*