# Bullet Flow vs Spec.md

The clearest difference is in-app purchases: Bullet Flow at none against Spec.md's 3. Bullet Flow also leads on iOS requirement (15.6 vs 17.4). On price, ads and device support there is nothing between them.

Both are free to download. Spec.md sells 3 in-app purchases, starting at $1.99 per 7 days. Bullet Flow asks for nothing beyond the download.

## The numbers

| Metric | Bullet Flow | Spec.md |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | — |
| Size | 3 MB | 2 MB |
| Requires iOS | **15.6** | 17.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [艳飞 秦](https://appshunter.io/developer/1535312831) | [Jiseok Han](https://appshunter.io/developer/1615744901) |

## What reviewers say

### Bullet Flow

[App page](https://appshunter.io/ios/app/bullet-flow/id6752284746)

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

**In-app purchases:** none


### Spec.md

[App page](https://appshunter.io/ios/app/specmd/id6758913111)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Spec.md Pro 1 Week | $1.99 | per 7 days |
| Spec.md Pro Plans | $3.99 | per month |
| Spec.md Pro 1 Year | $19.99 | per year |


## Frequently asked questions

### Is Bullet Flow free?

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

### Is Spec.md free?

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

### Do Bullet Flow or Spec.md have ads?

Neither Bullet Flow nor Spec.md shows ads.

---

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