# Mail Folders vs Keep Screen On

The clearest difference is rating: Keep Screen On at 2.0 against Mail Folders's 1.5. Keep Screen On also leads on price ($0.99 vs $3.99) and ratings volume (12 vs 2). Mail Folders's advantage is review sentiment (52% vs 40%). On update cadence, ads, in-app purchases and monetization model there is nothing between them.

Mail Folders costs $3.99 and Keep Screen On $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Keep Screen On holds the better App Store score, 2.0 against 1.5. That said, the two scores are not equally well evidenced: Keep Screen On has 12 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 52% of Mail Folders's written reviews are positive against 40% of Keep Screen On's, so the app with the better star average is not the one people write more warmly about.

Both ship on a similar rhythm, roughly every 5 months. The most recent releases landed on September 24, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Mail Folders | Keep Screen On |
| --- | --- | --- |
| Price | $3.99 | **$0.99** |
| Rating | [1.5 (2 ratings)](https://appshunter.io/ios/app/mail-folders/id320632380/reviews) | **[2.0 (12 ratings)](https://appshunter.io/ios/app/keep-screen-on/id1453969337/reviews)** |
| Number of ratings | 2 | **12** |
| Positive reviews | **51.7% of reviews** | 40.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | Every 5 months |
| Monetization | Paid | Paid |
| Size | 5 MB | 11 MB |
| Requires iOS | 16.6 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [TechKnowledge](https://appshunter.io/developer/304524337) | [Duy Nguyen](https://appshunter.io/developer/1444869106) |

## What reviewers say

### Mail Folders

[App page](https://appshunter.io/ios/app/mail-folders/id320632380)

Organize your IMAP email account by creating and managing custom folders. Automatically redirect emails from your inbox to designated folders based on set rules. Supports popular IMAP servers like Gmail, MobileMe, and AOL.

**Highlights:** Create and remove IMAP mail folders, Move emails into custom folders, Folder redirection based on rules, Supports Gmail, MobileMe, AOL, Organize inbox efficiently

**Features:** Vision Pro support

**In-app purchases:** none


### Keep Screen On

[App page](https://appshunter.io/ios/app/keep-screen-on/id1453969337)

This utility prevents your device from entering sleep mode while running specific tasks, such as waiting for code builds to finish. It offers customizable timeout settings and an alarm notification upon completion.

**Highlights:** Prevents device sleep mode, Useful for code builds, Customizable timeout, Alarm notification, Runs in background

**In-app purchases:** none


## Frequently asked questions

### Is Mail Folders free?

Mail Folders costs $3.99, with no in-app purchases.

### Is Keep Screen On free?

Keep Screen On costs $0.99, with no in-app purchases.

### Which has better reviews, Mail Folders or Keep Screen On?

Keep Screen On is rated higher. Mail Folders averages 1.5 out of 5 from 2 ratings, while Keep Screen On averages 2.0 from 12 ratings.

### Do Mail Folders or Keep Screen On have ads?

Neither Mail Folders nor Keep Screen On shows ads.

### Which is updated more often, Mail Folders or Keep Screen On?

Mail Folders ships an update every 5 months, and Keep Screen On every 5 months. Most recently, Mail Folders was updated on September 24, 2026 and Keep Screen On on September 9, 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.*