# Datalert vs Internet Data Sub

The clearest difference is update cadence: Datalert at every 2 months against Internet Data Sub's every 8 months. Datalert also leads on iOS requirement (9.0 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Datalert ships an update every 2 months, Internet Data Sub every 8 months. The most recent releases landed on October 14, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Datalert | Internet Data Sub |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/datalert/id771029268/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 68.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 8 months |
| Monetization | Free | — |
| Size | 15 MB | 20 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Saaswedo](https://appshunter.io/developer/771029271) | [SMD TECHNOLOGIES LIMITED](https://appshunter.io/developer/1808845842) |

## What reviewers say

### Datalert

[App page](https://appshunter.io/ios/app/datalert/id771029268)

Monitor your mobile data usage in real-time to avoid unexpected charges. Set custom limits for daily, weekly, and monthly usage and receive email alerts for overages. Track national, Wi-Fi, and roaming data consumption with detailed insights.

**Highlights:** Real-time data usage monitoring, Customizable usage limits, Email alerts for overages, National, Wi-Fi, and roaming tracking, Usage predictions, Personalized message alerts

**Features:** macOS Compatibility

**In-app purchases:** none


### Internet Data Sub

[App page](https://appshunter.io/ios/app/internet-data-sub-cheap-data/id6737516519)

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

**In-app purchases:** none


## Frequently asked questions

### Is Datalert free?

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

### Is Internet Data Sub free?

Internet Data Sub is free to download, with no in-app purchases.

### Do Datalert or Internet Data Sub have ads?

Neither Datalert nor Internet Data Sub shows ads.

### Which is updated more often, Datalert or Internet Data Sub?

Datalert ships an update every 2 months, and Internet Data Sub every 8 months. Most recently, Datalert was updated on October 14, 2026 and Internet Data Sub on September 30, 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.*