# NSF by EvidencE vs Obey

The clearest difference is in-app purchases: NSF by EvidencE at none against Obey's 6. Obey's advantage is iOS requirement (13.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Obey sells 6 one-off in-app purchases. NSF by EvidencE asks for nothing beyond the download.

## The numbers

| Metric | NSF by EvidencE | Obey |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/obey-bdsm-tracker/id6759303398/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | — |
| Monetization | — | Free with in-app purchases |
| Size | 36 MB | 50 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Ed2 Digital](https://appshunter.io/developer/1551205777) | [Clement Beal](https://appshunter.io/developer/1681467403) |

## What reviewers say

### NSF by EvidencE

[App page](https://appshunter.io/ios/app/nsf-by-evidence/id6737287618)

**Features:** macOS Compatibility

**In-app purchases:** none


### Obey

[App page](https://appshunter.io/ios/app/obey-bdsm-tracker/id6759303398)

This app helps BDSM couples build structure, accountability, and communication within their dynamic. It offers habit tracking with reward and discipline systems, private chat, and mood check-ins to foster consent, trust, and mutual agreement. Designed for adults seeking intention and clarity in their relationships.

**Highlights:** Habit tracking with rewards and discipline, Role definition (Dominant, Submissive, Switch), Multiple relationship management, Private chat with photo support, Task validation with pictures, Mood check-ins, Customizable themes and discreet interface

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Point | $2.99 | one-time |
| 5 Points | $9.99 | one-time |
| 10 Points | $17.99 | one-time |
| 20 Points | $29.99 | one-time |
| 50 Points | $59.99 | one-time |
| 100 Points | $99.99 | one-time |


## Frequently asked questions

### Is NSF by EvidencE free?

NSF by EvidencE is free to download, with no in-app purchases.

### Is Obey free?

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

### Do NSF by EvidencE or Obey have ads?

Neither NSF by EvidencE nor Obey 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.*