# OTC Memo vs Simple Mind Tree

OTC Memo and Simple Mind Tree are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on November 8, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | OTC Memo | Simple Mind Tree |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Size | 43 MB | 30 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Katsushi Kawamori](https://appshunter.io/developer/1771822715) | [Cheonsoo Park](https://appshunter.io/developer/1546728209) |

## What reviewers say

### OTC Memo

[App page](https://appshunter.io/ios/app/otc-memo/id6751605864)

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

**In-app purchases:** none


### Simple Mind Tree

[App page](https://appshunter.io/ios/app/simple-mind-tree/id6759855090)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OTC Memo free?

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

### Is Simple Mind Tree free?

Simple Mind Tree is free to download, with no in-app purchases.

### Do OTC Memo or Simple Mind Tree have ads?

Neither OTC Memo nor Simple Mind Tree shows ads.

### Which is updated more often, OTC Memo or Simple Mind Tree?

OTC Memo ships an update weekly, and Simple Mind Tree weekly. Most recently, OTC Memo was updated on November 8, 2026 and Simple Mind Tree on November 9, 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.*