# SkillCert vs iDev Tango

The clearest difference is in-app purchases: iDev Tango at none against SkillCert's 3. SkillCert's advantage is iOS requirement (13.0 vs 17.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. SkillCert sells 3 in-app purchases, starting at $2.99 per month. iDev Tango asks for nothing beyond the download.

SkillCert ships an update every 3 days, iDev Tango every 2 days. The most recent releases landed on September 10, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | SkillCert | iDev Tango |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 3 days | **Every 2 days** |
| Size | 155 MB | 5 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Yotaro SATO](https://appshunter.io/developer/1862063948) | [shohei yukawa](https://appshunter.io/developer/1825580540) |

## What reviewers say

### SkillCert

[App page](https://appshunter.io/ios/app/skillcert-mostcertifications/id6756679793)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SKILL Cert by AI ライトプラン | $2.99 | per month |
| SKILL Cert by AI スタンダードプラン | $9.99 | per month |
| SKILL Cert by AI プレミアムプラン | $29.99 | per month |


### iDev Tango

[App page](https://appshunter.io/ios/app/idev-tango/id6757414016)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SkillCert free?

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

### Is iDev Tango free?

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

### Do SkillCert or iDev Tango have ads?

Both SkillCert and iDev Tango show ads.

### Which is updated more often, SkillCert or iDev Tango?

SkillCert ships an update every 3 days, and iDev Tango every 2 days. Most recently, SkillCert was updated on September 10, 2026 and iDev Tango on September 17, 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.*