# KnowTree vs TapLog

The clearest difference is in-app purchases: TapLog at none against KnowTree's 1. TapLog also leads on ads (none vs shown) and update cadence (every 3 days vs every 9 days). On price, device support and iOS requirement there is nothing between them.

Both are free to download. KnowTree sells 1 one-off in-app purchase. TapLog asks for nothing beyond the download.

KnowTree ships an update every 9 days, TapLog every 3 days. The most recent releases landed on September 8, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | KnowTree | TapLog |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 9 days | **Every 3 days** |
| Size | 51 MB | 6 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ukon Ryohei](https://appshunter.io/developer/1834526187) | [Yasunori Toji](https://appshunter.io/developer/1865907094) |

## What reviewers say

### KnowTree

[App page](https://appshunter.io/ios/app/knowtree/id6757321205)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| KnowTree Premium | $4.99 | one-time |


### TapLog

[App page](https://appshunter.io/ios/app/taplog/id6757536758)

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

**In-app purchases:** none


## Frequently asked questions

### Is KnowTree free?

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

### Is TapLog free?

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

### Do KnowTree or TapLog have ads?

KnowTree shows ads; TapLog does not.

### Which is updated more often, KnowTree or TapLog?

KnowTree ships an update every 9 days, and TapLog every 3 days. Most recently, KnowTree was updated on September 8, 2026 and TapLog on September 29, 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.*