# Cashflow Engineers vs Certly

The clearest difference is in-app purchases: Cashflow Engineers at none against Certly's 1. Cashflow Engineers also leads on device support (3 vs 1) and iOS requirement (15.1 vs 26.2). Certly's advantage is update cadence (every 2 months vs every 5 months). On price and ads there is nothing between them.

Both are free to download. Certly sells 1 one-off in-app purchase. Cashflow Engineers asks for nothing beyond the download.

Cashflow Engineers ships an update every 5 months, Certly every 2 months. The most recent releases landed on September 8, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Cashflow Engineers | Certly |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/certly-ai-certification-prep/id6760678168/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | — | Free with in-app purchases |
| Size | 88 MB | 11 MB |
| Requires iOS | **15.1** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Maestro Marketing LLC](https://appshunter.io/developer/1683483509) | [Gabriel Pevide](https://appshunter.io/developer/1868143046) |

## What reviewers say

### Cashflow Engineers

[App page](https://appshunter.io/ios/app/cashflow-engineers/id6448095223)

**Features:** macOS Compatibility

**In-app purchases:** none


### Certly

[App page](https://appshunter.io/ios/app/certly-ai-certification-prep/id6760678168)

Prepare for AI Architect certification exams with AI-powered study tools. Practice with realistic simulations, detailed explanations, and smart review features. Master key domains and build confidence before test day.

**Highlights:** AI-powered prompt writing drills, Study by specific AI domains, Realistic exam simulations, Detailed answer explanations, Spaced repetition review, Daily challenges and streaks, Quick study mode

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $4.99 | one-time |


## Frequently asked questions

### Is Cashflow Engineers free?

Cashflow Engineers is free to download, with no in-app purchases.

### Is Certly free?

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

### Do Cashflow Engineers or Certly have ads?

Both Cashflow Engineers and Certly show ads.

### Which is updated more often, Cashflow Engineers or Certly?

Cashflow Engineers ships an update every 5 months, and Certly every 2 months. Most recently, Cashflow Engineers was updated on September 8, 2026 and Certly on September 10, 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.*