# Sleep Time vs DELTA SOLUTIONS ELD 2

The clearest difference is in-app purchases: DELTA SOLUTIONS ELD 2 at none against Sleep Time's 3. DELTA SOLUTIONS ELD 2 also leads on iOS requirement (15.5 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Sleep Time sells 3 one-off in-app purchases. DELTA SOLUTIONS ELD 2 asks for nothing beyond the download.

## The numbers

| Metric | Sleep Time | DELTA SOLUTIONS ELD 2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (8 ratings)](https://appshunter.io/ios/app/sleep-time-alarm-calculator/id6502281177/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 121 MB | 67 MB |
| Requires iOS | 18.0 | **15.5** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Oleg Filimonov](https://appshunter.io/developer/1769783383) | [Delta Solutions Inc](https://appshunter.io/developer/1860591013) |

## What reviewers say

### Sleep Time

[App page](https://appshunter.io/ios/app/sleep-time-alarm-calculator/id6502281177)

This utility helps you calculate optimal sleep and wake-up times based on your sleep cycles. It provides notifications for bedtime and wake-up, and accounts for the time it takes to fall asleep. Designed for iPhone and iPad.

**Highlights:** Sleep cycle calculation, Optimal wake-up time, Bedtime notifications, Wake-up notifications, Time to fall asleep calculation, iPhone and iPad optimized

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy me a Big Mac | $4.99 | one-time |
| A McDonald’s meal | $9.99 | one-time |
| A week of McDonald’s | $49.99 | one-time |


### DELTA SOLUTIONS ELD 2

[App page](https://appshunter.io/ios/app/delta-solutions-eld-2/id6762285162)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sleep Time free?

Sleep Time is free to download, with in-app purchases available.

### Is DELTA SOLUTIONS ELD 2 free?

DELTA SOLUTIONS ELD 2 is free to download, with no in-app purchases.

### Do Sleep Time or DELTA SOLUTIONS ELD 2 have ads?

Neither Sleep Time nor DELTA SOLUTIONS ELD 2 shows ads.

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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.*