12Calc
Store data observed · From public App Store data · How we score apps
- Finance
- App Store
- United States
- 4.9922 ratings
- Paid $8.99
- Updated
- Observed
Est. monthly revenue
Estimated$4.4K–$19KEst. (Modelled estimate, not reported data)Modelled estimate, not reported data#39 in its category (paid) ≈ 33 downloads/day × $9.89 per download
Est. monthly downloads
Estimated550–1.6KEst. (Modelled estimate, not reported data)Modelled estimate, not reported data#39 in Finance
90-day growth
—not enough history yet
Opportunity score
AI-derived13/100Weak · low confidence
Own 12Calc? Share your real numbers
Your numbers stay private. They only tune MRRBeam's estimates, so every app's figures get more accurate.
Sign in to share them.
About 12CalcObserved
12Calc is a Finance app by Ernest Brock on the United States App Store. Released Dec 19, 2013; last updated Sep 1, 2025 (version 3.0). 12Calc costs $8.99 to download.
As of Oct 8, 2026, 12Calc has a 4.9-star average rating from 922 ratings on the United States App Store and ranks #39 on the Finance top chart. MRRBeam rates the success of 12Calc 50/100 (rising).
12Calc is a full version of the well known HP12C for the iPhone and iPad. It also includes an audit tape, unit converter, worksheets, rotated views, user guide and HD graphics optimized for iPad and iPhone retina displays. •Runs in 64 bit mode on the latest iOS release and new iPads and iPhones.
- Success score
- 50/100 Rising
- In Finance
- Outside the top 100
- Chart position
- #39 in Financeon Oct 8, 2026
- Developer
- Ernest Brock
Loading the full report…
Top Finance apps
The most successful Finance apps MRRBeam tracks in the United States.
12Calc: common questions
- What is 12Calc?
- 12Calc is a Finance app developed by Ernest Brock, available on the App Store. It was first released on Dec 19, 2013.
- How is 12Calc rated?
- 12Calc has a 4.9-star average rating from 922 ratings on the United States App Store as of Oct 8, 2026.
- How much money does 12Calc make?
- MRRBeam estimates 12Calc makes about $4.4K–$19K a month in revenue from 550–1.6K downloads a month, based on its #39 position on the Finance paid chart. This is a modelled estimate, not reported data.
- How many downloads does 12Calc get?
- About 550–1.6K downloads a month, by MRRBeam's estimate from its chart position. Apple does not publish download counts.
- How much does 12Calc cost?
- 12Calc costs $8.99 to download.
- Is 12Calc successful?
- On Oct 8, 2026, 12Calc ranked #39 on the Finance top chart. MRRBeam rates the success of 12Calc 50/100 (rising). The success score combines rating volume, chart position and average rating.
- When was 12Calc last updated?
- 12Calc was last updated on Sep 1, 2025 (version 3.0).
- What are alternatives to 12Calc?
- Similar Finance apps tracked by MRRBeam include PayPal - Pay, Send, Save, Capital One Mobile, Venmo, Kalshi: Trade Football & more and Cash App.
- Is there room to build a competitor to 12Calc?
- MRRBeam's opportunity score for 12Calc is 13/100. Limited opening: an older app, low download volume and a strong 4.9★ rating.