# Data Engineer Cert Prep vs Daily Essay

The clearest difference is price: Data Engineer Cert Prep at Free against Daily Essay's $7.99. Data Engineer Cert Prep also leads on ads (none vs shown). Daily Essay's advantage is update cadence (every 9 days vs every 13 months). On in-app purchases, device support and iOS requirement there is nothing between them.

Data Engineer Cert Prep is free to download; Daily Essay costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Data Engineer Cert Prep ships an update every 13 months, Daily Essay every 9 days. The most recent releases landed on October 18, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Data Engineer Cert Prep | Daily Essay |
| --- | --- | --- |
| Price | **Free** | $7.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/daily-essay/id6683282160/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 13 months | **Every 9 days** |
| Monetization | — | Paid |
| Size | 1 MB | 19 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [DjamgaTech Corp](https://appshunter.io/developer/969000181) | [Esther Ramos](https://appshunter.io/developer/1768336660) |

## What reviewers say

### Data Engineer Cert Prep

[App page](https://appshunter.io/ios/app/data-engineer-cert-prep/id6566170013)

**Features:** Vision Pro support

**In-app purchases:** none


### Daily Essay

[App page](https://appshunter.io/ios/app/daily-essay/id6683282160)

This app provides a daily writing prompt to inspire creativity and improve writing skills. It serves as a personal coach for those looking to become better writers, expand their knowledge, or stay informed.

**Highlights:** Daily writing prompts, Writing skill improvement, Creativity spark, Knowledge expansion, Inspiration source

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

**In-app purchases:** none


## Frequently asked questions

### Is Data Engineer Cert Prep free?

Data Engineer Cert Prep is free to download, with no in-app purchases.

### Is Daily Essay free?

Daily Essay costs $7.99, with no in-app purchases.

### Do Data Engineer Cert Prep or Daily Essay have ads?

Daily Essay shows ads; Data Engineer Cert Prep does not.

### Which is updated more often, Data Engineer Cert Prep or Daily Essay?

Data Engineer Cert Prep ships an update every 13 months, and Daily Essay every 9 days. Most recently, Data Engineer Cert Prep was updated on October 18, 2026 and Daily Essay on October 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.*