# Enertec Think energy vs PDF Reader Scan & Edit

The clearest difference is in-app purchases: Enertec Think energy at none against PDF Reader Scan & Edit's 4. Enertec Think energy also leads on ads (none vs shown) and update cadence (monthly vs every 4 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. PDF Reader Scan & Edit sells 4 in-app purchases, starting at $1.99 per 7 days. Enertec Think energy asks for nothing beyond the download.

Enertec Think energy ships an update monthly, PDF Reader Scan & Edit every 4 months. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Enertec Think energy | PDF Reader Scan & Edit |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 4 months |
| Size | 39 MB | 10 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Enertec d.o.o](https://appshunter.io/developer/1549496691) | [Muhammad Usama](https://appshunter.io/developer/1676572056) |

## What reviewers say

### Enertec Think energy

[App page](https://appshunter.io/ios/app/enertec-think-energy/id1549496689)

**Features:** macOS Compatibility

**In-app purchases:** none


### PDF Reader Scan & Edit

[App page](https://appshunter.io/ios/app/pdf-reader-scan-and-edit/id6752109967)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pro | $1.99 | per 7 days |
| Monthly Pro | $4.99 | per month |
| Yearly Pro | $49.99 | per year |
| Lifetime Pro | $99.99 | one-time |


## Frequently asked questions

### Is Enertec Think energy free?

Enertec Think energy is free to download, with no in-app purchases.

### Is PDF Reader Scan & Edit free?

PDF Reader Scan & Edit is free to download, with in-app purchases available.

### Do Enertec Think energy or PDF Reader Scan & Edit have ads?

PDF Reader Scan & Edit shows ads; Enertec Think energy does not.

### Which is updated more often, Enertec Think energy or PDF Reader Scan & Edit?

Enertec Think energy ships an update monthly, and PDF Reader Scan & Edit every 4 months. Most recently, Enertec Think energy was updated on November 7, 2026 and PDF Reader Scan & Edit on October 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.*