# HayaFlow vs Boki Lens

HayaFlow and Boki Lens 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. HayaFlow sells 1 one-off in-app purchase and Boki Lens sells 1 in-app purchase, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

HayaFlow ships an update every 4 days, Boki Lens every 3 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | HayaFlow | Boki Lens |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 days | **Every 3 days** |
| Size | 26 MB | 14 MB |
| Requires iOS | 18 | 18.0 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Masato Hayashi](https://appshunter.io/developer/1856848263) | [MASATO NISHIURA](https://appshunter.io/developer/1819418334) |

## What reviewers say

### HayaFlow

[App page](https://appshunter.io/ios/app/hayaflow-flowchart-tool/id6761299030)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HayaFlow Unlock Full Function | $2.99 | one-time |


### Boki Lens

[App page](https://appshunter.io/ios/app/boki-lens-learn-accounting/id6762626800)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium (Monthly) | $2.99 | per month |


## Frequently asked questions

### Is HayaFlow free?

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

### Is Boki Lens free?

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

### Do HayaFlow or Boki Lens have ads?

Neither HayaFlow nor Boki Lens shows ads.

### Which is updated more often, HayaFlow or Boki Lens?

HayaFlow ships an update every 4 days, and Boki Lens every 3 days. Most recently, HayaFlow was updated on November 5, 2026 and Boki Lens on October 31, 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.*