Auto Action vs 12C
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Auto Action
This application allows users to generate and complete car evaluations. It streamlines the process of assessing vehicles directly within the app.
- Create car evaluations
- Complete requested evaluations
- In-app evaluation process
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You can create car evaluations and complete the evaluations requested directly by the application.
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.
Screenshots
Verdict
The clearest difference is rating: Auto Action at 3.7 against 12C's 3.1. Auto Action also leads on in-app purchases (none vs 1) and update cadence (fortnightly vs every 15 months). 12C's advantage is ratings volume (10 vs 3) and iOS requirement (12.0 vs 15.6). On price, ads 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. Auto Action asks for nothing beyond the download.
Auto Action holds the better App Store score, 3.7 against 3.1. Both are backed by a comparable volume of ratings — 3 and 10 respectively.
Auto Action ships an update fortnightly, 12C every 15 months. Both last shipped on October 24, 2026.
| Parameter | Auto Action | 12C |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (3 ratings) — better | 3.1 (10 ratings) |
| Positive reviews | — | 21.4% of reviews |
| Number of ratings | 3 | 10 — better |
| Update frequency | Fortnightly — better | Every 15 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 56 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Auto Avaliar | Anishu, Inc. |
Customer experience
Auto Action
12C
In-app purchases
Auto Action
No in-app purchases
12C
- 12C Modern: full functionality$5.99








