# light & deep vs back

The clearest difference is update cadence: back at every 3 days against light & deep's every 2 weeks. back also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.6). On price, ads and in-app purchases there is nothing between them.

Both are free to download. light & deep sells 1 one-off in-app purchase and back sells 3 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

light & deep ships an update every 2 weeks, back every 3 days. Both last shipped on October 28, 2026.

## The numbers

| Metric | light & deep | back |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 3 days** |
| Size | 4 MB | 8 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Mikhail Rybakov](https://appshunter.io/developer/1888238166) | [ERIK HAFFNER](https://appshunter.io/developer/1835430233) |

## What reviewers say

### light & deep

[App page](https://appshunter.io/ios/app/light-and-deep/id6761198321)

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Light & Deep Pro | $11.99 | one-time |


### back

[App page](https://appshunter.io/ios/app/back-to-one/id6787674619)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Back-to-One Pro (Monthly) | $7.99 | per month |
| Back-to-One Pro (Yearly) | $79.99 | per year |
| Back-to-One Pro (Lifetime) | $179.99 | one-time |


## Frequently asked questions

### Is light & deep free?

light & deep is free to download, with in-app purchases available.

### Is back free?

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

### Do light & deep or back have ads?

Neither light & deep nor back shows ads.

### Which is updated more often, light & deep or back?

light & deep ships an update every 2 weeks, and back every 3 days. Most recently, light & deep was updated on October 28, 2026 and back on October 28, 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.*