Open2FA vs my12c
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Open2FA
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Open2FA is a simple, open source two-factor authentication application. Two-step verification helps you protect your accounts, even if attackers have your password. - All your codes are stored encrypted (AES-256). - Codes can be added via QR scan or manually. - FaceID and TouchID support. - Import and export encrypted file with codes. - You can store data as in iCloud and synchronize between devices, or store everything locally on your device. Open2FA - Two-factor authentication application with sync & AES-256 encryption. All your accounts are encrypted with AES-256. You can use iCloud to synchronize accounts between devices. There is import and export of encrypted file with all accounts. Or export the account to any other 2FA application.
my12c
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The financial calculator that has been on every banker's, broker's and realtor's desk since 1981 โ now on your iPhone, iPad and Mac. my12C brings the legendary 12C Voyager series financial calculator back to life with cycle-accurate emulation running the original microcode. Every keystroke, every display flicker, every RPN operation โ faithfully reproduced. WHY THE 12C NEVER WENT AWAY The 12C is the longest-lived calculator ever made, and for good reason: its time-value-of-money keys, cash-flow analysis and RPN logic solve real financial problems in a handful of keystrokes. It is still the calculator used in finance courses and licensing exams around the world. FEATURES โข Cycle-accurate emulation โ runs the original Voyager microcode, not a simulation โข Time value of money โ n, i, PV, PMT and FV, solve for any of the five โข Amortization โ interest and principal for any range of payments โข Cash-flow analysis โ NPV and IRR for up to 20 grouped cash flows โข Bonds โ price and yield to maturity on the 30/360 basis โข Depreciation โ straight-line, sum-of-the-years-digits and declining-balance โข Calendar โ days between dates and date arithmetic, actual and 30/360 โข Percentages, simple interest, odd-period compounding, statistics and linear regression โข Programmable โ up to 99 lines, with conditional tests, branching and looping โข RPN entry โ the efficient Reverse Polish Notation four-level stack โข Authentic 7-segment LCD display with all original annunciators โข Built-in self-tests, working exactly as on the original hardware BUILT FOR TODAY โข Complete Owner's Manual inside the app โ every section, worked example, cash-flow diagram, formula and program listing of the original handbook, with a linked subject index โข iCloud sync โ your calculator state follows you across devices โข Native on iPhone and Mac โ landscape optimized on iOS, resizable window on macOS โข Full keyboard support on Mac โ type numbers and operators directly, Enter on the numeric keypad works as ENTER โข Dark interface faithful to the original Voyager design
Screenshots
Verdict
The clearest difference is in-app purchases: Open2FA at none against my12c's 1. Open2FA also leads on iOS requirement (15.0 vs 26.0). my12c's advantage is update cadence (every 5 days vs every 3 weeks). On price, ads and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. my12c sells 1 one-off in-app purchase. Open2FA asks for nothing beyond the download.
Open2FA ships an update every 3 weeks, my12c every 5 days. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.
| Parameter | Open2FA | my12c |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | Every 5 days โ better |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Devices | iPhone, iPad, iPod, Mac โ better | iPhone, iPad, Mac |
| Requires iOS | 15.0 โ better | 26.0 |
| Further details โ not scored | ||
| Size | 11 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Uladzislau Vrubleuski | Miroslav Perovic |
In-app purchases
Open2FA
No in-app purchases
my12c
- Unlock Full App$9.99









