12C vs FinZenFlow
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
12C
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.
- HP 12c functionality reimplementation
- Interactive prompts and recipes
- Register views for data inspection
- Basic calculator functions included
- Advanced financial functions via IAP
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The 12c Modern is a complete reimplementation of the full functionality of the classic HP 12c financial calculator. In addition to providing 12c's look & feel and functionality, we have modernized the app with features such as recipes, interactive prompts, and register views. This free version provides basic Calculator functions, Math functions, Percentage, Calendar and Memory functions. A one-time In-App-Purchase is required to access the Time-Value-of-Money (TVM), Cash Flow, Amortization, Bond, Depreciation, and Statistics functions. The 12c modern addresses two critical issues for the user: (i) knowing what is stored in each of the calculator's internal registers, (ii) remembering the exact key sequences for getting specific calculations done. The register views, accessible in the main screen, provides visibility into various register groups. You can switch between different groups of registers (such as Financial, Cash Flow, Bond, etc.), and inspect stored values. You can record your key strokes for specific calculations and store them as recipes. The recipes remove the burden of remembering the exact keystroke sequence for your tasks. You simply select a pre-recorded recipe (builtin or your own) and run. When running a recipe, the app visually prompts you with the keystrokes to press and guides you along in getting the results. The app comes with 20 built-in recipes and allows you to add/record/edit/delete your own recipes. The convenient register view on the screen allows you to view register contents as your operations proceed.
FinZenFlow
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FinZenFlow helps you organize personal finances clearly, without advertising or tracking. Manage accounts, income, expenses, transfers, categories, tags, payees, and recurring transactions. Build monthly and yearly budgets, plan upcoming transactions, and use automations that detect patterns. View reports for income, expenses, cash flow, and net worth, with comparisons and exports. The free plan stores data on the device; Premium can sync it through your private iCloud CloudKit database and adds biometric lock, advanced import and export, and backups. Free for up to 2 accounts and 20 categories; Premium removes the limits. FinZenFlow does not provide financial, tax, or legal advice. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | 12C | FinZenFlow |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (10 ratings) — better | — |
| Positive reviews | 21.4% of reviews | — |
| Number of ratings | 10 — better | — |
| Update frequency | Every 15 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac, Apple Watch — better |
| Requires iOS | 12.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 15 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Anishu, Inc. | Francisco J. Camacho |
In-app purchases
12C
- 12C Modern: full functionality$5.99
FinZenFlow
- FinZenFlow Family Premium$1.991 Month
- FinZenFlow Family Premium$17.991 Year









