# A vs NovaFlow Pass

A and NovaFlow Pass 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. A sells 1 one-off in-app purchase and NovaFlow Pass sells 4 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

A ships an update every 10 months, NovaFlow Pass every 6 months. The most recent releases landed on November 3, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | A | NovaFlow Pass |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/a-number/id1547102751/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 6 months** |
| Monetization | Free | — |
| Size | 2 MB | 133 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod, Mac | iPhone, iPad, iPod, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Shabbir Ahmed](https://appshunter.io/developer/1083166021) | [海瑞 束](https://appshunter.io/developer/1618207642) |

## What reviewers say

### A

[App page](https://appshunter.io/ios/app/a-number/id1547102751)

This utility app calculates the A-Number for deposited weld metal based on its chemical composition. It simplifies the process of comparing weld metal composition against ASME Section IX standards, aiding in procedure qualification and ensuring compliance.

**Highlights:** Determines A-Number from chemical composition, Compares weld metal to ASME Section IX ranges, Aids in procedure qualification, Supports ASME Section IX 2023 Edition, Provides accurate results

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Non-Consumable Subscription | $1.99 | one-time |


### NovaFlow Pass

[App page](https://appshunter.io/ios/app/novaflow-pass/id6478474020)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 连续包月 | $0.99 | per month |
| 连续包季 | $2.99 | per 3 months |
| 连续包年 | $9.99 | per year |
| 专业版 | $9.99 | one-time |


## Frequently asked questions

### Is A free?

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

### Is NovaFlow Pass free?

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

### Do A or NovaFlow Pass have ads?

Neither A nor NovaFlow Pass shows ads.

### Which is updated more often, A or NovaFlow Pass?

A ships an update every 10 months, and NovaFlow Pass every 6 months. Most recently, A was updated on November 3, 2026 and NovaFlow Pass on October 25, 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.*