# 12C vs FinZenFlow

The clearest difference is update cadence: FinZenFlow at every 4 days against 12C's every 15 months. 12C's advantage is iOS requirement (12.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 12C sells 1 one-off in-app purchase and FinZenFlow sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

12C ships an update every 15 months, FinZenFlow every 4 days. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | 12C | FinZenFlow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.1 (10 ratings)](https://appshunter.io/ios/app/12c-modern/id6444529133/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 21.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 15 MB | 17 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Anishu, Inc.](https://appshunter.io/developer/306257913) | [Francisco J. Camacho](https://appshunter.io/developer/1893566445) |

## What reviewers say

### 12C

[App page](https://appshunter.io/ios/app/12c-modern/id6444529133)

This app replicates the functionality of a classic financial calculator, offering modern enhancements like interactive prompts and register views. It provides basic calculator, math, percentage, calendar, and memory functions for free, with advanced financial tools available via a one-time purchase.

**Highlights:** HP 12c functionality reimplementation, Interactive prompts and recipes, Register views for data inspection, Basic calculator functions included, Advanced financial functions via IAP

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 12C Modern: full functionality | $5.99 | one-time |


### FinZenFlow

[App page](https://appshunter.io/ios/app/finzenflow/id6762256648)

**Features:** Family Sharing, Apple Watch app, iPhone Duo support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FinZenFlow Family Premium | $1.99 | per month |
| FinZenFlow Family Premium | $17.99 | per year |


## Frequently asked questions

### Is 12C free?

12C is free to download, with in-app purchases available.

### Is FinZenFlow free?

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

### Do 12C or FinZenFlow have ads?

Neither 12C nor FinZenFlow shows ads.

### Which is updated more often, 12C or FinZenFlow?

12C ships an update every 15 months, and FinZenFlow every 4 days. Most recently, 12C was updated on October 30, 2026 and FinZenFlow on October 28, 2026.

---

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