# SPF vs WhatToLayer

The clearest difference is in-app purchases: WhatToLayer at none against SPF's 7. WhatToLayer also leads on device support (3 vs 1) and iOS requirement (12.0 vs 16.6). SPF's advantage is chart position (#61 vs unranked). On price and ads there is nothing between them.

Both are free to download. SPF sells 7 in-app purchases, starting at $0.99 per 7 days. WhatToLayer asks for nothing beyond the download.

## The numbers

| Metric | SPF | WhatToLayer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (5K ratings)](https://appshunter.io/ios/app/spf-tan-timer-and-uv-tracker/id6744385703/reviews)** | — |
| Number of ratings | **5K** | — |
| Positive reviews | 31.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | — |
| Monetization | Free with in-app purchases | — |
| Best chart rank | **#61** | — |
| Size | 212 MB | 27 MB |
| Requires iOS | 16.6 | **12.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 9+ | 4+ |
| Developer | [BluPalms](https://appshunter.io/developer/1699380087) | [ForgedRider Group Inc.](https://appshunter.io/developer/6776724810) |

## What reviewers say

### SPF

[App page](https://appshunter.io/ios/app/spf-tan-timer-and-uv-tracker/id6744385703)

**Currently charting:** #61 Top Grossing · Weather (US App Store)

This app helps you achieve a faster and safer tan by tracking UV levels, providing personalized routines, and reminding you to reapply sunscreen. Monitor your progress and avoid burns with a structured approach to sun exposure.

**Highlights:** Real-time UV level checks, Customized tanning routines, Daily SPF and skincare plan, Sunscreen reapplication alerts, Tan progress tracking, Quick tan timer

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SPF: Weekly Offer Plan | $0.99 | per 7 days |
| Weekly Offer Plan | $2.99 | per 7 days |
| Weekly Plan | $3.99 | per 7 days |
| Weekly Plan | $5.99 | per 7 days |
| weekly5.99 | $5.99 | per 7 days |
| SPF: Yearly Offer Plan | $29.99 | per year |
| SPF: Yearly Offer Plan | $47.00 | per year |

**What reviewers like**

- 🚀 Easy to use
- 👍 Helpful tanning routine
- 🚀 Efficient tanning process
- 💡 Free version available
- 👍 Tracks tanning progress

**What reviewers complain about**

- 🐛 Occasional crashes or glitches

**Reported bugs**

- Compatibility issues with older devices

**Requested features**

- Advanced tanning analytics
- Customizable tanning plans


### WhatToLayer

[App page](https://appshunter.io/ios/app/whattolayer/id6791634684)

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

**In-app purchases:** none


## Frequently asked questions

### Is SPF free?

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

### Is WhatToLayer free?

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

### Do SPF or WhatToLayer have ads?

Neither SPF nor WhatToLayer 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.*