# oTMS Driver vs Simplio Invoice Generator

The clearest difference is in-app purchases: oTMS Driver at none against Simplio Invoice Generator's 3. oTMS Driver also leads on iOS requirement (11.0 vs 18.5). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Simplio Invoice Generator sells 3 in-app purchases, starting at $2.99 per 7 days. oTMS Driver asks for nothing beyond the download.

oTMS Driver ships an update monthly, Simplio Invoice Generator every 3 weeks. The most recent releases landed on October 9, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | oTMS Driver | Simplio Invoice Generator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/simplio-invoice-generator/id6746767938/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 244 MB | 17 MB |
| Requires iOS | **11.0** | 18.5 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [OTMS TRANSPORT TECHNOLOGIES PTE. LTD.](https://appshunter.io/developer/1800879486) | [Bahattin Duran](https://appshunter.io/developer/1677311418) |

## What reviewers say

### oTMS Driver

[App page](https://appshunter.io/ios/app/otms-driver/id1631637375)

**Features:** macOS Compatibility

**In-app purchases:** none


### Simplio Invoice Generator

[App page](https://appshunter.io/ios/app/simplio-invoice-generator/id6746767938)

Quickly generate professional PDF invoices with customizable templates, branding, and payment details. Save client information for reuse and share invoices directly from your device. Offers offline functionality and a privacy-focused approach.

**Highlights:** Professional invoice templates, Customizable branding and contact details, Line item details with tax and discounts, Multi-currency and payment term support, Client directory for reuse, Offline PDF export and sharing, Recurring invoices and status tracking (Pro)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $2.99 | per 7 days |
| Pro Monthly | $6.99 | per month |
| Pro Annual | $29.99 | per year |


## Frequently asked questions

### Is oTMS Driver free?

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

### Is Simplio Invoice Generator free?

Simplio Invoice Generator is free to download, with in-app purchases available.

### Do oTMS Driver or Simplio Invoice Generator have ads?

Neither oTMS Driver nor Simplio Invoice Generator shows ads.

### Which is updated more often, oTMS Driver or Simplio Invoice Generator?

oTMS Driver ships an update monthly, and Simplio Invoice Generator every 3 weeks. Most recently, oTMS Driver was updated on October 9, 2026 and Simplio Invoice Generator on October 10, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*