# Certpia vs flex

The clearest difference is rating: Certpia at 4.4 against flex's 3.4. Certpia also leads on monetization model (free vs freemium) and device support (3 vs 1). flex's advantage is update cadence (every 3 days vs monthly) and review sentiment (28% vs 13%). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Certpia holds the better App Store score, 4.4 against 3.4. Both are backed by a comparable volume of ratings — 37 and 18 respectively. Written reviews complicate that: 13% of Certpia's written reviews are positive against 28% of flex's, so the app with the better star average is not the one people write more warmly about.

Certpia ships an update monthly, flex every 3 days. The most recent releases landed on October 23, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Certpia | flex |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (37 ratings)](https://appshunter.io/ios/app/certpia/id928347102/reviews)** | [3.4 (18 ratings)](https://appshunter.io/ios/app/flex-relations-driven-ax/id1535757707/reviews) |
| Number of ratings | **37** | 18 |
| Positive reviews | 12.7% of reviews | **28.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 days** |
| Monetization | **Free** | Freemium |
| Size | 46 MB | 488 MB |
| Requires iOS | **12.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [I.N.TECH INC](https://appshunter.io/developer/1700629897) | [플렉스 주식회사](https://appshunter.io/developer/1535757709) |

## What reviewers say

### Certpia

[App page](https://appshunter.io/ios/app/certpia/id928347102)

This app allows users to easily issue, submit, and verify various certificates from over 220 universities and major institutions. It ensures secure and official document issuance through government-standard technology. Verify original documents using school names, internet numbers, or QR codes.

**Highlights:** Issue various certificates, Submit electronic certificates, Verify original documents, Secure data management, Government-certified technology, QR code verification

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Certpia free?

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

### Is flex free?

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

### Which has better reviews, Certpia or flex?

Certpia is rated higher. Certpia averages 4.4 out of 5 from 37 ratings, while flex averages 3.4 from 18 ratings.

### Do Certpia or flex have ads?

Neither Certpia nor flex shows ads.

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

Certpia ships an update monthly, and flex every 3 days. Most recently, Certpia was updated on October 23, 2026 and flex on October 20, 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.*