# Certimy vs Post Ninja

The clearest difference is update cadence: Post Ninja at weekly against Certimy's every 2 months. Certimy's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Certimy sells 4 in-app purchases, starting at $44.99 per year and Post Ninja sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Certimy ships an update every 2 months, Post Ninja weekly. The most recent releases landed on October 30, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Certimy | Post Ninja |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/post-ninja-hashtag-and-caption/id6739523661/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | — | Freemium |
| Size | 44 MB | 50 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [EVOLUZIONE OU](https://appshunter.io/developer/1712492731) | [Byte Guys](https://appshunter.io/developer/1712087638) |

## What reviewers say

### Certimy

[App page](https://appshunter.io/ios/app/certimy/id6469706018)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Start Security | $44.99 | per year |
| Premium Security | $59.99 | per year |
| Elite Security | $119.99 | per year |
| Unlimited Security | $229.99 | per year |


### Post Ninja

[App page](https://appshunter.io/ios/app/post-ninja-hashtag-and-caption/id6739523661)

This app uses AI to generate engaging captions and optimize hashtags for social media posts. Upload a photo and receive tailored suggestions to increase visibility, attract followers, and boost likes and views across various platforms.

**Highlights:** AI caption generation, Optimized hashtag suggestions, Time-saving post creation, Social media growth tools, Multi-platform support, User-friendly interface

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium Access | $9.99 | per month |
| Yearly Premium Access | $39.99 | per year |


## Frequently asked questions

### Is Certimy free?

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

### Is Post Ninja free?

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

### Do Certimy or Post Ninja have ads?

Neither Certimy nor Post Ninja shows ads.

### Which is updated more often, Certimy or Post Ninja?

Certimy ships an update every 2 months, and Post Ninja weekly. Most recently, Certimy was updated on October 30, 2026 and Post Ninja on October 27, 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.*