Comparison

CalCollections vs my12c

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

CalCollections

Features
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This app allows users to organise their calculators into collections. The app uses tailored options to register the calculators and as much information possible about them. With CalCollections you can have all your calculator collections in one place.

About

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 โ€ข Cycle-accurate emulation โ€” runs the original Voyager microcode, not a simulation โ€ข Time value of money โ€” n, i, PV, PMT and FV, solve for any of the five โ€ข Amortization โ€” interest and principal for any range of payments โ€ข Cash-flow analysis โ€” NPV and IRR for up to 20 grouped cash flows โ€ข Bonds โ€” price and yield to maturity on the 30/360 basis โ€ข Depreciation โ€” straight-line, sum-of-the-years-digits and declining-balance โ€ข Calendar โ€” days between dates and date arithmetic, actual and 30/360 โ€ข Percentages, simple interest, odd-period compounding, statistics and linear regression โ€ข Programmable โ€” up to 99 lines, with conditional tests, branching and looping โ€ข RPN entry โ€” the efficient Reverse Polish Notation four-level stack โ€ข Authentic 7-segment LCD display with all original annunciators โ€ข Built-in self-tests, working exactly as on the original hardware BUILT FOR TODAY โ€ข 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 โ€ข iCloud sync โ€” your calculator state follows you across devices โ€ข Native on iPhone and Mac โ€” landscape optimized on iOS, resizable window on macOS โ€ข Full keyboard support on Mac โ€” type numbers and operators directly, Enter on the numeric keypad works as ENTER โ€ข Dark interface faithful to the original Voyager design

Screenshots

CalCollections4 screens
my12c3 screens

Verdict

The call

The clearest difference is in-app purchases: CalCollections at none against my12c's 1. CalCollections also leads on iOS requirement (18.4 vs 26.0). my12c's advantage is update cadence (every 5 days vs every 4 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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. my12c sells 1 one-off in-app purchase. CalCollections asks for nothing beyond the download.

UpkeepUpdate frequency

CalCollections ships an update every 4 weeks, my12c every 5 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

Scorecard3 real differences ยท 3 level
CalCollections versus my12c: the parameters behind the verdict, then further details
ParameterCalCollectionsmy12c
PriceFreeFree
Update frequencyEvery 4 weeksEvery 5 days โ€” better
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPadiPhone, iPad, Mac โ€” better
Requires iOS18.4 โ€” better26.0
Further details โ€” not scored
Size2 MB6 MB
Age rating4+4+
DeveloperThe Calculator Store SLNEMiroslav Perovic

In-app purchases

None

CalCollections

No in-app purchases

1 purchases

my12c

One-time1
  • Unlock Full App$9.99

Questions

Is CalCollections free?
CalCollections is free to download, with no in-app purchases.
Is my12c free?
my12c is free to download, with in-app purchases available.
Do CalCollections or my12c have ads?
Neither CalCollections nor my12c shows ads.
Which is updated more often, CalCollections or my12c?
CalCollections ships an update every 4 weeks, and my12c every 5 days. Most recently, CalCollections was updated on October 25, 2026 and my12c on October 24, 2026.

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