# OTK Mobile vs PDK Access by ProdataKey

The clearest difference is rating: PDK Access by ProdataKey at 1.9 against OTK Mobile's 1.0. PDK Access by ProdataKey also leads on review sentiment (21% vs 0%) and chart position (#208 vs unranked). OTK Mobile's advantage is iOS requirement (9.0 vs 15.6). On price, update cadence, 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.

PDK Access by ProdataKey holds the better App Store score, 1.9 against 1.0. That said, the two scores are not equally well evidenced: PDK Access by ProdataKey has 16 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 0% of OTK Mobile's written reviews are positive against 21% of PDK Access by ProdataKey's.

OTK Mobile ships an update every 6 weeks, PDK Access by ProdataKey every 2 months. The most recent releases landed on October 10, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | OTK Mobile | PDK Access by ProdataKey |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (2 ratings)](https://appshunter.io/ios/app/otk-mobile/id1078037872/reviews) | **[1.9 (16 ratings)](https://appshunter.io/ios/app/pdk-access-by-prodatakey/id1458630045/reviews)** |
| Number of ratings | 2 | **16** |
| Positive reviews | 0.0% of reviews | **21.4% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | Free | Free |
| Best chart rank | — | **#208** |
| Size | 9 MB | 102 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Acumen Data Systems, Inc.](https://appshunter.io/developer/931928103) | [ProdataKey, Inc.](https://appshunter.io/developer/1160020607) |

## What reviewers say

### OTK Mobile

[App page](https://appshunter.io/ios/app/otk-mobile/id1078037872)

This app serves as a comprehensive time and attendance system for employees, offering features like scheduling, HR management, and job tracking. It integrates with payroll and ERP systems for streamlined business operations.

**Highlights:** Employee Time & Attendance, Employee Scheduling, HR Management & Employee Self-Service, Job Tracking, Payroll System Integration, ERP System Integration

**In-app purchases:** none


### PDK Access by ProdataKey

[App page](https://appshunter.io/ios/app/pdk-access-by-prodatakey/id1458630045)

**Currently charting:** #208 Top Free · Business (US App Store)

Transform your smartphone into a secure mobile credential, eliminating the need for physical access cards. Easily send or receive digital credentials for properties via email. This app offers powerful access control for employees, administrators, and installation partners.

**Highlights:** Unlock doors with phone via Bluetooth, Tap-to-unlock functionality, Send/receive digital credentials via email, Grant/revoke user access, Manage schedules and view reports, Remote system management for administrators, Streamlined installation and configuration for technicians

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🚀 Unlock at any distance
- 👍 Works great, very responsive
- 👍 Great app
- 👍 No issues
- 👍 App has improved

**What reviewers complain about**

- 🐛 Viva Townhomes issues
- 🐛 Slow
- 🐛 Update needed
- 🐛 Full of bugs
- 🐛 App is terrible

**Reported bugs**

- Crashed and wont let me recover
- Update Needed
- New Update Crash
- App instantly crashes 2.4.1
- Unstable

**Requested features**

- Apple Watch app
- Widget support
- Apple CarPlay
- Apple Watch and Fitbit Apps


## Frequently asked questions

### Is OTK Mobile free?

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

### Is PDK Access by ProdataKey free?

PDK Access by ProdataKey is free to download, with no in-app purchases.

### Which has better reviews, OTK Mobile or PDK Access by ProdataKey?

PDK Access by ProdataKey is rated higher. OTK Mobile averages 1.0 out of 5 from 2 ratings, while PDK Access by ProdataKey averages 1.9 from 16 ratings.

### Do OTK Mobile or PDK Access by ProdataKey have ads?

Neither OTK Mobile nor PDK Access by ProdataKey shows ads.

### Which is updated more often, OTK Mobile or PDK Access by ProdataKey?

OTK Mobile ships an update every 6 weeks, and PDK Access by ProdataKey every 2 months. Most recently, OTK Mobile was updated on October 10, 2026 and PDK Access by ProdataKey on October 16, 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.*