# Mobile Data Assistant vs Diary AI

The clearest difference is price: Mobile Data Assistant at Free against Diary AI's $0.99. Mobile Data Assistant also leads on update cadence (every 6 weeks vs every 16 months). Diary AI's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

Mobile Data Assistant is free to download; Diary AI costs $0.99 up front. Mobile Data Assistant sells 1 one-off in-app purchase. Diary AI asks for nothing beyond the download.

Mobile Data Assistant ships an update every 6 weeks, Diary AI every 16 months. The most recent releases landed on September 30, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Mobile Data Assistant | Diary AI |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[3.7 (6 ratings)](https://appshunter.io/ios/app/mobile-data-assistant/id6455939775/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 42.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 6 weeks** | Every 16 months |
| Monetization | Free with in-app purchases | — |
| Size | 10 MB | 3 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Fausto Ristagno](https://appshunter.io/developer/482102205) | [Juiko Ong](https://appshunter.io/developer/639263890) |

## What reviewers say

### Mobile Data Assistant

[App page](https://appshunter.io/ios/app/mobile-data-assistant/id6455939775)

Monitor your cellular and Wi-Fi data usage with detailed graphs and an interactive map. Manage multiple data plans, track consumption, and stay informed with customizable widgets. Avoid unexpected costs and waste with this intuitive data management tool.

**Highlights:** Monitor cellular and Wi-Fi data usage, Detailed real-time graphs, Interactive data consumption map, Manage multiple data plans, Customizable home and lock screen widgets, Track data plan renewal dates

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium lifetime | $2.99 | one-time |


### Diary AI

[App page](https://appshunter.io/ios/app/diary-ai/id6532618062)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Mobile Data Assistant free?

Mobile Data Assistant is free to download, with in-app purchases available.

### Is Diary AI free?

Diary AI costs $0.99, with no in-app purchases.

### Do Mobile Data Assistant or Diary AI have ads?

Mobile Data Assistant shows ads; Diary AI does not.

### Which is updated more often, Mobile Data Assistant or Diary AI?

Mobile Data Assistant ships an update every 6 weeks, and Diary AI every 16 months. Most recently, Mobile Data Assistant was updated on September 30, 2026 and Diary AI on September 29, 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.*