# OPSWAT SDP vs Dotted

The clearest difference is in-app purchases: OPSWAT SDP at none against Dotted's 3. OPSWAT SDP also leads on iOS requirement (13.0 vs 17.0). Dotted's advantage is update cadence (weekly vs every 6 months) and device support (5 vs 3). On price and ads there is nothing between them.

Both are free to download. Dotted sells 3 in-app purchases, starting at $9.99 per month. OPSWAT SDP asks for nothing beyond the download.

OPSWAT SDP ships an update every 6 months, Dotted weekly. The most recent releases landed on October 12, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | OPSWAT SDP | Dotted |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Weekly** |
| Size | 62 MB | 31 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, Mac, Apple Watch, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [OPSWAT](https://appshunter.io/developer/987603817) | [Teddy App Labs, LLC](https://appshunter.io/developer/1077754549) |

## What reviewers say

### OPSWAT SDP

[App page](https://appshunter.io/ios/app/opswat-sdp/id1574377620)

**Features:** macOS Compatibility

**In-app purchases:** none


### Dotted

[App page](https://appshunter.io/ios/app/dotted-habit-notebook/id6766436632)

**Features:** Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Dotted Pro Monthly | $9.99 | per month |
| Dotted Pro Annual | $59.99 | per year |
| Dotted Pro Lifetime | $99.99 | one-time |


## Frequently asked questions

### Is OPSWAT SDP free?

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

### Is Dotted free?

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

### Do OPSWAT SDP or Dotted have ads?

Neither OPSWAT SDP nor Dotted shows ads.

### Which is updated more often, OPSWAT SDP or Dotted?

OPSWAT SDP ships an update every 6 months, and Dotted weekly. Most recently, OPSWAT SDP was updated on October 12, 2026 and Dotted on October 26, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*