# OaaSIS TMS vs Bknil SEO

The clearest difference is in-app purchases: OaaSIS TMS at none against Bknil SEO's 4. OaaSIS TMS also leads on update cadence (every 6 days vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Bknil SEO sells 4 one-off in-app purchases. OaaSIS TMS asks for nothing beyond the download.

OaaSIS TMS ships an update every 6 days, Bknil SEO monthly. The most recent releases landed on October 25, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | OaaSIS TMS | Bknil SEO |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Monthly |
| Size | 80 MB | 27 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [omelet.ai](https://appshunter.io/developer/1790635510) | [SANGWOO NOH](https://appshunter.io/developer/1771933747) |

## What reviewers say

### OaaSIS TMS

[App page](https://appshunter.io/ios/app/oaasis-tms/id6741858424)

**Features:** macOS Compatibility

**In-app purchases:** none


### Bknil SEO

[App page](https://appshunter.io/ios/app/bknil-seo-backlink-builder/id6751446596)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter | $5.99 | one-time |
| Basic | $11.99 | one-time |
| Pro | $24.99 | one-time |
| Enterprise | $49.99 | one-time |


## Frequently asked questions

### Is OaaSIS TMS free?

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

### Is Bknil SEO free?

Bknil SEO is free to download, with in-app purchases available.

### Do OaaSIS TMS or Bknil SEO have ads?

Neither OaaSIS TMS nor Bknil SEO shows ads.

### Which is updated more often, OaaSIS TMS or Bknil SEO?

OaaSIS TMS ships an update every 6 days, and Bknil SEO monthly. Most recently, OaaSIS TMS was updated on October 25, 2026 and Bknil SEO on October 7, 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.*