# OBSRV vs MemoTree

The clearest difference is in-app purchases: OBSRV at none against MemoTree's 1. OBSRV also leads on ads (none vs shown) and iOS requirement (11.0 vs 15.6). MemoTree's advantage is update cadence (every 4 days vs every 2 weeks). On price and device support there is nothing between them.

Both are free to download. MemoTree sells 1 in-app purchase, starting at $0.99 per month. OBSRV asks for nothing beyond the download.

OBSRV ships an update every 2 weeks, MemoTree every 4 days. The most recent releases landed on September 11, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | OBSRV | MemoTree |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/obsrv-personal-notes/id1535719555/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 weeks | **Every 4 days** |
| Monetization | Free | — |
| Size | 62 MB | 5 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Benjamin Spurlock](https://appshunter.io/developer/1535601534) | [상섭 이](https://appshunter.io/developer/1276061930) |

## What reviewers say

### OBSRV

[App page](https://appshunter.io/ios/app/obsrv-personal-notes/id1535719555)

Capture location-specific reminders and notes for businesses you visit. Remember details about your experiences or specific people you want to reconnect with.

**Highlights:** Location-based notes, Business-specific reminders, Personalized memory aid, Easy note creation

**Features:** macOS Compatibility

**In-app purchases:** none


### MemoTree

[App page](https://appshunter.io/ios/app/memotree-notes-organizer/id6760863843)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly MemoTree Subscription | $0.99 | per month |


## Frequently asked questions

### Is OBSRV free?

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

### Is MemoTree free?

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

### Do OBSRV or MemoTree have ads?

MemoTree shows ads; OBSRV does not.

### Which is updated more often, OBSRV or MemoTree?

OBSRV ships an update every 2 weeks, and MemoTree every 4 days. Most recently, OBSRV was updated on September 11, 2026 and MemoTree on September 10, 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.*